GOST 14791 79 working temperature range. Non-hardening construction mastic

UMS-50 non-hardening sealing mastic construction GOST 14791-79

Price of UMS-50 mastic: 1 kg = from 130 rubles

You can buy this product by calling the phones listed on the website or go to the contact page to find out the address of the warehouse in order to pick up the consignment yourself.

Mastic UMS-50

Non-hardening building mastic UMS-50 is intended for sealing closed and drained joints of external walls and sealing the junction of window and door blocks to wall elements while maintaining properties at temperatures from -50 ° C to +70 ° C. The width of the sealed joint is 10 - 30 mm. The relative deformation of the non-hardening mastic UMS-50 is not more than 10%. Below are the product photos. The mastic is packaged in containers convenient for transportation and carrying by workers on their own at the construction site:

the container is marked by the manufacturer. Always in stock in stock, you can purchase this mastic.

UMS-50 mastic in accordance with GOST 14791-79

This mastic is a homogeneous viscous mass. It is made on the basis of polyisobutylene, ethylene propylene, isoprene and butyl rubbers, fillers and plasticizers. The material is packaged in briquettes with a diameter of 30 - 50 mm. The length of the briquette wrapped in a polyethylene film is more than 150 cm. Thanks to this, it does not stain your hands and can be applied using a special electric sealant.

Mastic belongs to group B by category fire hazard according to SNiP. The mastic is manufactured in accordance with GOST 14791-79. Contains special mineral fillers. The composition has good adhesion to any surfaces of building materials.

Application of mastic UMS-50

The mastic is applied using a special device - an electric sealant.

Before using the mastic, it is necessary to keep the material at a temperature of 20 ± 20 ° C for at least 24 hours.

Before sealing, the joint surface must be free of dust, debris, concrete sagging, ice or snow. To protect the mastic, paint compounds are used at the joints of large-panel buildings. This prevents evaporation and migration of the plasticizer. And as a decorative and protective coating, it is possible to use a polymer-cement solution.

Mastic UMS-50 It has long term service. Sealed joints will not be thought out and precipitation will not get into them. Using this mastic, you can be 100% sure that the work will be done efficiently and the result will last forever. it modern material, time-tested. The composition is homogeneous with good adhesion to any surface of concrete, stone, brick, wood and other similar building materials.

The application of the mastic must be carried out after the surface structural elements will be cleaned of dirt and dust. In this case, the mastic adheres better to the surface and the quality of the sealed joint is greatly increased. Previously, this mastic was applied with a small spatula. Now there is a power tool that speeds up work at times. At the same time, the quality of sealing is much higher due to the fact that the mastic is dosed and squeezed out evenly. It is enough to fill a new tourniquet with mastic into the electric hermetic sealer and continue working.

This mastic can be used for sealing seams and joints between window and door openings, at the joints of structural elements of buildings and structures. To protect the mastic layer after application, it is possible to close it with cement grout, paint.

Guarantees, storage conditions and transportation of UMS-50 mastic

Dear Clients! We would like to inform you that the guaranteed shelf life of the UMS-50 mastic is 1 year from the date of its manufacture. New fresh goods are stored in our warehouses. Since the goods are constantly bought, you can be sure that the warranty periods for the goods are met, as well as that the conditions for storing and transporting the goods are observed.

UMS-50 mastic should be stored in a covered warehouse protected from direct sun rays location. Ingress of moisture, precipitation is also not allowed. The product is stored in sealed containers and labeled. The label indicates all detailed information about the product. The mastic is transported by any kind of covered transport.

Buy mastic UMS-50

In order to buy UMS-50 mastic, please call the numbers indicated on the website. We provide excellent conditions cooperation and help with the organization of delivery to any region of the country. You can also come to the warehouse and purchase the mastic yourself. It is profitable to work with us. See for yourself. Call now!

The mastic is always available in stock. We can provide you with this sealing material in any the required amount... We help with delivery to any region of the country. We carry out the work with high quality, on time. Contact us!

STATE STANDARD OF THE UNION OF SSR

MASTIC SEALING UNHARDING CONSTRUCTION

TECHNICAL CONDITIONS

GOST 14791-79

STATE CONSTRUCTION COMMITTEE of the USSR

STATE STANDARD OF THE UNION OF SSR

By the decree of the State Committee of the USSR for Construction Affairs of May 22, 1979 No. 71, the term for the introduction of

from 01.01.81

Non-hardening mastic is intended for sealing closed and drained joints of external walls and for sealing the places of abutment of window and door blocks to wall elements while maintaining properties in the temperature range from minus 50 to plus 70 ° C, with the width of the sealed joint within 10-30 mm and the relative deformation of the non-hardening mastic in the seam not more than 10%.

1. TECHNICAL REQUIREMENTS

1.1. Sealing non-hardening mastic should be manufactured in accordance with the requirements of this standard for the technological regulations approved in established order.

1.2. In terms of physical and mechanical indicators, the mastic must comply with the standards specified in the table.

Indicator name	Norm for mastic

Tensile strength, kgf / cm 2	0,10-0,15	0,08-0,10
Elongation at maximum load,%, not less
The nature of the destruction	Cohesive
Water absorption,%, no more
Consistency, mm	7-11	7-11
Runoff of mastic at 70° C (heat resistance), mm, no more
Elongation at minus 50° С,%, not less
Migration of plasticizer	Not allowed

1.3. In appearance, the mastic should be homogeneous, while more than two inclusions with a diameter of more than 1 mm are not allowed on the cross-section of the briquette.

1.4. The materials used for the manufacture of mastic must comply with the requirements of the regulatory and technical documentation for these materials.

2. RULES OF ACCEPTANCE

2.1. The mastic is taken in batches. The batch size is set in the amount of not more than shift production on one technological line.

2.2. To check the compliance of the mastic with the requirements of this standard, 3%, but not less than 3 container places, are selected from each batch. One briquette is taken from each container place.

2.3. Tensile strength, elongation at maximum load, water absorption, consistency, plasticizer migration, runoff at 70 ° With and appearance, checked for the mastic included in each batch.

2.4. Determination of the relative elongation at minus 50 ° C and the nature of the destruction of the mastic is carried out with each change in its recipe, but at least once a year.

In case of unsatisfactory results of repeated tests, the batch of mastic is not subject to acceptance.

If, upon acceptance of the mastic, which has been awarded the State Quality Mark in the prescribed manner, it turns out that it does not meet at least one of the indicators provided for in this standard, then the mastic is not subject to acceptance for the highest quality category.

2.6. The consumer has the right to carry out a control check of the quality of the mastic in accordance with the requirements of this standard.

3. TEST METHODS

3.1. Before making test specimens, the mastic is kept for at least 18 h at a temperature (20 ± 2) ° WITH.

3.2. For each type of testing, at least three samples are made (one sample from each briquette).

3.3. Tests of mastic samples are carried out at a temperature (20 ± 2) ° C after preliminary holding at this temperature for at least 3 hours.

3.4. The value of the mastic indicator is calculated as the arithmetic mean of the test results of three or more samples, while the deviation of each of the results from the average should be no more than 10%.

3.5. Determination of tensile strength, elongation at maximum load and nature of failure

3.5.1. Equipment

The tests are carried out on a tensile testing machine in accordance with GOST 7762-74, equipped with a device for measuring the elongation and special grips, the diagram of which is shown in fig. 1.

The tensile testing machine must provide:

load measurement with an error of no more than 1.0%;

constant speed of movement of the grippers (1 ± 0.5) and (10 ± 2.0) mm / min.

The device for measuring the elongation must have a scale division of the reading device no more than 0.1 mm and a measurement error of no more than 1.0%.

To determine the nature of the destruction of the sample, a stencil is used, the diagram of which is shown in Fig. 2.

3.5.2. Sample preparation for testing

For the production of samples of the mastic seam, tiles made of concrete of grade 200 with dimensions of 50x50x25 mm, prepared and aged for three months, are used.

It is allowed to reuse used concrete tiles, provided that a layer of concrete with a thickness of at least 1 mm is removed from their surface adjacent to the mastic.

Heated up to 70 ° Apply with mastic in the form of a roller in the middle concrete tiles and crimped from both sides with wooden limiting strips 20 mm high and 50 mm long to dimensions in plan 30x50 mm.

To avoid adhesion of the mastic to the wooden planks, they should be on the side adjacent to the mastic, lubricated with mineral oil and sprinkled with filler used to make the mastic. From above, the mastic roller is pressed with a second concrete tile until it is given rectangular dimensions 30x50x20 mm. Excess mastic is removed with a spatula or knife.

3.5.3. Testing

The samples are placed in the grips of the tensile testing machine and stretched (at a moving grip speed of 10 mm / min) until they rupture; at the same time, the diagram "load - deformation" is recorded.

The magnitude of the elongation of the sample at the maximum load is determined according to the "load - deformation" diagram.

In the absence of recorders, the elongation of the sample should be measured with a dial indicator with a graduation of no more than 0.1 mm.

Tensile strength R p in kgf / cm 2 is calculated by the formula

S- area of the initial cross-section of the sample, cm 2.

Elongation in% is calculated by the formula

where h- distance between concrete tiles before testing, mm;

Elongation of the sample at maximum load, mm.

To determine the nature of the destruction, concrete tiles are freed from grips, the main mass of the mastic is cut off with a knife moistened with water, so that a layer of mastic of no more than 3 mm remains on their surface. A stencil is applied to the place where the mastic separates from the surface of the concrete tile to which it was glued (Fig. 2) and the area of separation is calculated.

When the mastic is detached from the concrete tile in an area of no more than 10% of the total area of the sample, the nature of the destruction is considered cohesive.

3.6. Determination of water absorption

The essence of the method is to determine the mass of water absorbed by a sample of mastic when it is kept in water for a specified time.

3.6.1. To determine water absorption, heated to 70 ° With mastic (about 10 g), apply an even layer on a glass plate or plastic wrap 50x50 mm in size, pre-weighed with an error of 0.001 g.

Samples with mastic are weighed with an error of 0.001 g and kept in water for 24 h at a temperature (20 ± 2)° C. Once removed from the water, the samples are blotted with filter paper and weighed again with the same accuracy.

3.6.2. Water absorption W in% calculated by the formula

where g 0 is the mass of the sample before testing, g;

g 1 - mass of the sample after testing, g;

m- mass of mastic, g.

3.7. Determination of consistency

The consistency of the mastic is characterized by the depth of immersion in the mastic of a standard cone with a total mass of 150 g at a given temperature and for a specified time.

The immersion depth of the cone is determined in accordance with the requirements of GOST 5346-78, while the vessel specified in the standard is filled heated to 70 ° With mastic so that air bubbles do not form in it, and incubated for 3 hours at a temperature (20 ± 2) ° WITH.

3.8. Determination of mastic runoff at 70° C (heat resistance)

The essence of the method is to determine the amount of mastic drainage under its own weight at a given temperature and time.

3.8.1. For testing, a tray is used, the diagram of which is shown in fig. 3.

After keeping the filled tray in a horizontal position for 3 hours at a temperature of (20 ± 2) ° The protruding mastic is cut flush with the top and end cuts of the side walls of the tray.

A rod is inserted into the ears of the tray, the tray is placed in a thermostat in an upright position with the protruding part down and kept at a temperature of 70 ° C within 24 hours.

3.8.2. After 24 hours, the tray is removed from the thermostat and placed horizontally. Along the protruding part of the tray, on which risks are applied with a graduation of 1.0 mm, a bar with dimensions of 40x40x60 mm is moved until it touches the mastic and the gap in millimeters is measured between the lower end cut of the side walls of the tray and the bar.

3.9. Determination of the relative elongation at a temperature of 50° WITH

3.9.1. The tests are carried out on a specially equipped cryogenic chamber of a tensile testing machine, the requirements for which are given in clause 3.5.1, at the speed of movement of the movable clamp (1.0 ± 0.5) mm / min.

Preparation of samples for testing is carried out in accordance with the requirements given in clause 3.5.2.

The prepared samples are kept for 1 hour in a cryochamber at a temperature of minus 50 ° WITH.

The test of the sample is carried out 15 minutes after fixing it in the grips of the tensile testing machine.

When the elongation of the specimen reaches 7% of the original distance between the concrete slabs, the test is stopped.

Determination of the relative elongation of the sample at a temperature of minus 50 ° C was carried out by the Institute "VNIIstroypolymer" of the USSR Ministry of Building Materials until January 1, 1982.

3.10. Determination of homogeneity

3.10.1. The homogeneity of the mastic is determined visually in the briquette cut.

3.11. Determination of plasticizer migration

For testing, a brass ring 5 mm high, 25 mm outer diameter, 20 mm inner diameter and filter paper in accordance with GOST 12026-76 are used.

To determine the migration of the plasticizer, a layer of filter paper is placed on a glass plate and a brass ring is placed on it. The ring is filled with the test mastic.

The manufactured samples are kept in a thermostat at (100 ± 5° C) within 4 hours. After removing the samples from the thermostat, no traces of plasticizer should be found on the filter paper.

4. MARKING, PACKAGING, TRANSPORTATION AND STORAGE

4.1. The mastic is packed in rectangular briquettes with a section of 60x30 mm and a length of up to 500 mm, which are wrapped in a polyethylene film with a thickness of no more than 40 microns in accordance with GOST 10354-82.

At the request of the consumer, it is allowed to pack mastic into briquettes with a diameter of 30-50 mm and a length of not more than 150 cm. Briquettes are packed in wooden or cardboard boxes, wooden barrels or winding drums.

By agreement with the consumer, it is allowed to pack the mastic in another container.

The gross weight of one container must be no more than 50 kg.

4.2. The marking of the container must comply with the requirements of GOST 14192-77. Each container must be labeled with a label indicating:

name of the mastic;

batch number and date of manufacture;

net weight of the packed place;

shelf life of the mastic;

4.3. The manufacturer must accompany each shipped batch of mastic with instructions for use and a document of the established form, which must indicate:

the name of the organization subordinate to the manufacturer;

name and address of the manufacturer or its trademark;

name of the mastic;

batch number and date of manufacture;

net weight of the packed place;

results of physical and mechanical tests;

designation of this standard.

4.4. All shipping documentation for mastic of the highest quality category must have the image of the State Quality Mark, assigned in the manner established by the USSR State Standard.

4.5. Mastic is allowed to be transported by any type of transport in conditions that ensure its protection from the effects of precipitation, sunlight and mechanical damage.

4.6. To protect the mastic from exposure to sunlight and atmospheric precipitation, it should be stored indoors.

4.7. During transportation and storage, it is prohibited to throw containers with mastic.

5. DIRECTIONS FOR USE

5.1. Sealing non-hardening mastic should be used in accordance with its instructions for use.

5.2. Before use, the mastic must be kept at a temperature of (20 ± 2) ° From at least 24 hours

6. MANUFACTURER'S WARRANTIES

6.1. The manufacturer must ensure that the mastic complies with the requirements of this standard, subject to the conditions of transportation, storage and operation.

6.2. The guaranteed shelf life of the mastic is one year from the date of manufacture.

6.3. After the expiration of the guaranteed storage period, the mastic must be checked for compliance with the requirements of this standard before use.

Construction Materials... GOST 14791-79: Non-hardening construction sealing mastic. Technical conditions. OKS: Building materials and construction, Building materials. GOSTs. Non-hardening construction mastic. .... class = text>

GOST 14791-79

Non-hardening construction mastic. Technical conditions

GOST 14791-79
Group W15

STATE STANDARD OF THE UNION OF SSR

MASTIC SEALING UNHARDING CONSTRUCTION
Technical conditions
Sealing non-hardening building mastic. Specifications

Date of introduction 1981-01-01

This standard applies to a non-hardening sealing mastic, which is a viscous homogeneous mass made on the basis of polyisobutylene, ethylene propylene, isoprene and butyl rubbers, fillers and plasticizers.
Non-hardening mastic is intended for sealing closed and drained joints of external walls and for sealing the places of abutment of window and door blocks to wall elements while maintaining properties in the temperature range from minus 50 to plus 70 ° C, with the width of the sealed joint within 10-30 mm and relative deformation of non-hardening mastic in the seam is not more than 10%.

1. Technical requirements

1. TECHNICAL REQUIREMENTS

1.1. Sealing non-hardening mastic should be manufactured in accordance with the requirements of this standard for technological regulations approved in the prescribed manner.

1.2. In terms of physical and mechanical indicators, the mastic must comply with the standards specified in the table.

Indicator name	Norm for mastic

Tensile strength, kgf / cm
Elongation at maximum load,%, not less
The nature of the destruction	Cohesive
Water absorption,%, no more
Consistency, mm
Runoff of mastic at 70 ° С (heat resistance), mm, no more
Elongation at minus 50 ° С,%, not less
Migration of plasticizer	Not allowed

1.3. In appearance, the mastic should be homogeneous, while more than two inclusions with a diameter of more than 1 mm are not allowed on the cross-section of the briquette.

1.4. The materials used for the manufacture of mastic must comply with the requirements of the regulatory and technical documentation for these materials.

2. Acceptance rules

2.1. The mastic is taken in batches. The batch size is set in the amount of not more than shift production on one technological line.

2.3. Tensile strength, elongation at maximum load, water absorption, consistency, plasticizer migration, runoff at 70 ° C and appearance are checked for the mastic included in each batch.

2.4. Determination of the relative elongation at minus 50 ° C and the nature of the destruction of the mastic is carried out with each change in its recipe, but at least once a year.

2.5. If the test results are unsatisfactory for at least one of the indicators provided for in this standard, repeated tests of a double number of samples taken from the same batch are carried out for this indicator.
In case of unsatisfactory results of repeated tests, the batch of mastic is not subject to acceptance.
If, upon acceptance of the mastic, which has been awarded the State Quality Mark in the prescribed manner, it turns out that it does not meet at least one of the indicators provided for in this standard, then the mastic is not subject to acceptance for the highest quality category.

2.6. The consumer has the right to carry out a control check of the quality of the mastic in accordance with the requirements of this standard.

3. Test methods

3.1. Before making test specimens, the mastic is kept for at least 18 hours at a temperature of (20 ± 2) ° C.

3.2. For each type of testing, at least three samples are made (one sample from each briquette).

3.3. Tests of mastic samples are carried out at a temperature of (20 ± 2) ° C after preliminary holding at this temperature for at least 3 hours.

3.4. The value of the mastic indicator is calculated as the arithmetic mean of the test results of three or more samples, while the deviation of each of the results from the mean should be no more than 10%.

3.5. Determination of tensile strength, elongation at maximum load and nature of failure

3.5.1. Equipment
The tests are carried out on a tensile testing machine in accordance with GOST 7762-74 *, equipped with a device for measuring the elongation and special grips, the diagram of which is shown in Fig. 1.
________________
* Within the territory of Russian Federation the document is not valid. GOST 28840-90 is in effect. - Note from the manufacturer of the database.

Damn 1. Diagram of a device for measuring elongation and special grips

Damn 1

The tensile testing machine must provide:
load measurement with an error of no more than 1.0%;
constant movement speed of the grippers (1 ± 0.5) and (10 ± 2.0) mm / min.
The device for measuring the elongation must have a scale division of the reading device no more than 0.1 mm and a measurement error of no more than 1.0%.
To determine the nature of the destruction of the sample, a stencil is used, the diagram of which is shown in Fig. 2.

Damn 2. Stencil for determining the nature of sample destruction

Damn 2

3.5.2. Sample preparation for testing
For the production of samples of the mastic seam, tiles made of concrete of grade 200 with dimensions of 505025 mm, prepared and aged for three months, are used.
It is allowed to reuse used concrete tiles, provided that a layer of concrete with a thickness of at least 1 mm is removed from their surface adjacent to the mastic.
The mastic heated to 70 ° C is applied in the form of a roller to the middle of the concrete tile and squeezed from both sides with wooden limiting strips 20 mm high and 50 mm long to a plan size of 3050 mm.
To avoid adhesion of the mastic to the wooden planks, they should be on the side adjacent to the mastic, lubricated with mineral oil and sprinkled with filler used to make the mastic. From above, the mastic roller is pressed with a second concrete tile until it is rectangular with dimensions of 305020 mm. Excess mastic is removed with a spatula or knife.

3.5.3. Testing
The samples are placed in the grips of the tensile testing machine and stretched (at a moving grip speed of 10 mm / min) until they rupture; at the same time, a load-deformation diagram is recorded.
The amount of elongation of the specimen at maximum load is determined from the load-deformation diagram.
In the absence of recorders, the elongation of the sample should be measured with a dial indicator with a graduation of no more than 0.1 mm.
The tensile strength in kgf / cm is calculated by the formula

Initial cross-sectional area of the specimen, see Fig.
Elongation in% is calculated by the formula

where is the distance between concrete tiles before testing, mm;
- specimen elongation at maximum load, mm.
To determine the nature of the destruction, concrete tiles are freed from grips, the main mass of the mastic is cut off with a knife moistened with water, so that a layer of mastic of no more than 3 mm remains on their surface. A stencil is applied to the place where the mastic separates from the surface of the concrete tile to which it was glued (Fig. 2) and the area of separation is calculated.
When the mastic is detached from the concrete tile in an area of no more than 10% of the total area of the sample, the nature of the destruction is considered cohesive.

3.6. Determination of water absorption
The essence of the method is to determine the mass of water absorbed by a sample of mastic when it is kept in water for a specified time.

3.6.1. To determine water absorption, mastic heated to 70 ° C (about 10 g) is applied in an even layer on a glass plate or polyethylene film 5050 mm in size, previously weighed with an error of 0.001 g.
Samples with mastic are weighed with an error of 0.001 g and kept in water for 24 h at a temperature of (20 ± 2) ° C. After removing from the water, the samples are blotted with filter paper and weighed again with the same accuracy.

3.6.2. Water absorption in% is calculated by the formula

where is the mass of the sample before testing, g;
is the mass of the sample after testing, g;
- mass of mastic, g.
________________
* The formula and the explication to it correspond to the original. - Note from the manufacturer of the database.

3.7. Determination of consistency
The consistency of the mastic is characterized by the depth of immersion in the mastic of a standard cone total weight 150 g at the specified temperature and for the specified time.
The immersion depth of the cone is determined in accordance with the requirements of GOST 5346-78, while the vessel specified in the standard is filled with mastic heated to 70 ° C so that no air bubbles form in it, and kept for 3 hours at a temperature of (20 ± 2) ° WITH.

3.8. Determination of mastic runoff at 70 ° C (heat resistance)
The essence of the method is to determine the amount of mastic drainage under its own weight at a given temperature and time.

3.8.1. For testing, a tray is used, the diagram of which is shown in Fig. 3.

Damn. 3. Test Tray Layout

The tray should be made of tinplate with a thickness of 1.0-1.4 mm. Before filling the tray, the mastic is preliminarily kept for about 1 hour in a thermostat at a temperature of 70 ° C. Then the tray is tightly filled with mastic so that the mastic protrudes slightly above the upper and end cuttings of the side walls.
After holding the filled tray in a horizontal position for 3 hours at a temperature of (20 ± 2) ° C, the protruding mastic is cut flush with the upper and end cuts of the side walls of the tray.
A rod is inserted into the ears of the tray, the tray is placed in a thermostat in an upright position with the protruding part down and kept at a temperature of 70 ° C for 24 hours.

3.8.2. After 24 hours, the tray is removed from the thermostat and placed horizontally. Along the protruding part of the tray, on which the risks are applied with a division value of 1.0 mm, a bar with dimensions of 404060 mm is moved until it touches the mastic and the gap in millimeters is measured between the lower end cut of the side walls of the tray and the bar.

3.9. Determination of the relative elongation at a temperature of 50 ° C

3.9.1. The tests are carried out on a specially equipped cryochamber of a tensile testing machine, the requirements for which are given in clause 3.5.1, at a speed of movement of the movable clamp (1.0 ± 0.5) mm / min.
Preparation of samples for testing is carried out in accordance with the requirements given in clause 3.5.2.
The prepared samples are kept for 1 hour in a cryochamber at a temperature of minus 50 ° C.
The test of the sample is carried out 15 minutes after fixing it in the grips of the tensile testing machine.
When the elongation of the specimen reaches 7% of the original distance between the concrete slabs, the test is stopped.
The determination of the relative elongation of the sample at a temperature of minus 50 ° C was carried out by the Institute "VNIIstroypolymer" of the USSR Ministry of Construction Materials until January 1, 1982.

3.10. Determination of homogeneity

3.10.1. The homogeneity of the mastic is determined visually in the briquette cut.

3.11. Determination of plasticizer migration
For testing, a brass ring 5 mm high, 25 mm outer diameter, 20 mm inner diameter and filter paper in accordance with GOST 12026-76 are used.
To determine the migration of the plasticizer, a layer of filter paper is placed on a glass plate and a brass ring is placed on it. The ring is filled with the test mastic.
The manufactured samples are kept in a thermostat at (100 ± 5 ° C) for 4 hours. After removing the samples from the thermostat, no traces of plasticizer should be found on the filter paper.

4. Marking, packaging, transportation and storage

4.1. The mastic is packed in rectangular briquettes with a cross-section of 6030 mm and a length of up to 500 mm, which are wrapped in a polyethylene film with a thickness of no more than 40 microns in accordance with GOST 10354-82.
At the request of the consumer, it is allowed to pack the mastic into briquettes with a diameter of 30-50 mm and a length of no more than 150 cm.
Briquettes are packed in wooden or cardboard boxes, wooden barrels or winding drums.
By agreement with the consumer, it is allowed to pack the mastic in another container.
The gross weight of one container must be no more than 50 kg.

4.2. The marking of the container must comply with the requirements of GOST 14192-77 *. Each container must be labeled with a label indicating:
________________
* The document is not valid on the territory of the Russian Federation. GOST 14192-96 is in effect. - Note from the manufacturer of the database.

name of the mastic;
batch number and date of manufacture;
net weight of the packed place;
shelf life of the mastic;

4.3. The manufacturer must accompany each shipped batch of mastic with instructions for use and a document of the established form, which must indicate:
the name of the organization subordinate to the manufacturer;
name and address of the manufacturer or its trademark;
name of the mastic;
batch number and date of manufacture;
net weight of the packed place;
results of physical and mechanical tests;
designation of this standard.

4.4. All shipping documentation for mastic of the highest quality category must have the image of the State Quality Mark, assigned in the manner established by the USSR State Standard.

4.5. Mastic is allowed to be transported by any type of transport in conditions that ensure its protection from the effects of precipitation, sunlight and mechanical damage.

4.6. To protect the mastic from exposure to sunlight and atmospheric precipitation, it should be stored indoors.

4.7. During transportation and storage, it is prohibited to throw containers with mastic.

5. Directions for use

5.1. Sealing non-hardening mastic should be used in accordance with its instructions for use.

5.2. Before use, the mastic must be kept at a temperature of (20 ± 2) ° С for at least 24 hours.

6. Manufacturer's Warranties

6.1. The manufacturer must ensure that the mastic complies with the requirements of this standard, subject to the conditions of transportation, storage and operation.

6.2. The guaranteed shelf life of the mastic is one year from the date of manufacture.

6.3. After the expiration of the guaranteed storage period, the mastic must be checked for compliance with the requirements of this standard before use.

GOST 14791-79

Group W15

STATE STANDARD OF THE UNION OF SSR

MASTIC SEALING UNHARDING CONSTRUCTION

Technical conditions

Sealing non-hardening building mastic. Specifications

Date of introduction 1981-01-01

By the decree of the State Committee of the USSR for Construction Affairs of May 22, 1979 N 71, the introduction period was established from 01.01.81

REPLACE GOST 14791-69, GOST 5.2129-73

REPUBLICATION. August 1990

This standard applies to a non-hardening sealing mastic, which is a viscous homogeneous mass made on the basis of polyisobutylene, ethylene propylene, isoprene and butyl rubbers, fillers and plasticizers.

Non-hardening mastic is intended for sealing closed and drained joints of external walls and for sealing the places of abutment of window and door blocks to wall elements while maintaining properties in the temperature range from minus 50 to plus 70 ° C, with the width of the sealed joint within 10-30 mm and relative deformation of non-hardening mastic in the seam is not more than 10%.

1. Technical requirements

1. TECHNICAL REQUIREMENTS

1.1. Sealing non-hardening mastic should be manufactured in accordance with the requirements of this standard for technological regulations approved in the prescribed manner.

1.2. In terms of physical and mechanical indicators, the mastic must comply with the standards specified in the table.


Indicator name	Norm for mastic

Tensile strength, kgf / cm
Elongation at maximum load,%, not less
The nature of the destruction	Cohesive
Water absorption,%, no more
Consistency, mm
Runoff of mastic at 70 ° С (heat resistance), mm, no more
Elongation at minus 50 ° С,%, not less
Migration of plasticizer	Not allowed

1.3. In appearance, the mastic should be homogeneous, while more than two inclusions with a diameter of more than 1 mm are not allowed on the cross-section of the briquette.

1.4. The materials used for the manufacture of mastic must comply with the requirements of the regulatory and technical documentation for these materials.

2. Acceptance rules

2.1. The mastic is taken in batches. The batch size is set in the amount of not more than shift production on one technological line.

2.3. Tensile strength, elongation at maximum load, water absorption, consistency, plasticizer migration, runoff at 70 ° C and appearance are checked for the mastic included in each batch.

2.4. Determination of the relative elongation at minus 50 ° C and the nature of the destruction of the mastic is carried out with each change in its recipe, but at least once a year.

2.5. If the test results are unsatisfactory for at least one of the indicators provided for in this standard, repeated tests of a double number of samples taken from the same batch are carried out for this indicator.

In case of unsatisfactory results of repeated tests, the batch of mastic is not subject to acceptance.

If, upon acceptance of the mastic, which has been awarded the State Quality Mark in the prescribed manner, it turns out that it does not meet at least one of the indicators provided for in this standard, then the mastic is not subject to acceptance for the highest quality category.

2.6. The consumer has the right to carry out a control check of the quality of the mastic in accordance with the requirements of this standard.

3. Test methods

3.1. Before making test specimens, the mastic is kept for at least 18 hours at a temperature of (20 ± 2) ° C.

3.2. For each type of testing, at least three samples are made (one sample from each briquette).

3.3. Tests of mastic samples are carried out at a temperature of (20 ± 2) ° C after preliminary holding at this temperature for at least 3 hours.

3.5. Determination of tensile strength, elongation at maximum load and nature of failure

Damn 1. Diagram of a device for measuring elongation and special grips

Damn 1

The tensile testing machine must provide:

load measurement with an error of no more than 1.0%;

constant movement speed of the grippers (1 ± 0.5) and (10 ± 2.0) mm / min.

The device for measuring the elongation must have a scale division of the reading device no more than 0.1 mm and a measurement error of no more than 1.0%.

To determine the nature of the destruction of the sample, a stencil is used, the diagram of which is shown in Fig. 2.

Damn 2. Stencil for determining the nature of sample destruction

Damn 2

3.5.2. Sample preparation for testing

For the production of samples of the mastic seam, tiles made of concrete of grade 200 with dimensions of 505025 mm, prepared and aged for three months, are used.

It is allowed to reuse used concrete tiles, provided that a layer of concrete with a thickness of at least 1 mm is removed from their surface adjacent to the mastic.

The mastic heated to 70 ° C is applied in the form of a roller to the middle of the concrete tile and squeezed from both sides with wooden limiting strips 20 mm high and 50 mm long to a plan size of 3050 mm.

To avoid adhesion of the mastic to the wooden planks, they should be on the side adjacent to the mastic, lubricated with mineral oil and sprinkled with filler used to make the mastic. From above, the mastic roller is pressed with a second concrete tile until it is rectangular with dimensions of 305020 mm. Excess mastic is removed with a spatula or knife.

3.5.3. Testing

The samples are placed in the grips of the tensile testing machine and stretched (at a moving grip speed of 10 mm / min) until they rupture; at the same time, a load-deformation diagram is recorded.

The amount of elongation of the specimen at maximum load is determined from the load-deformation diagram.

In the absence of recorders, the elongation of the sample should be measured with a dial indicator with a graduation of no more than 0.1 mm.

The tensile strength in kgf / cm is calculated by the formula

Initial cross-sectional area of the specimen, see Fig.

Elongation in% is calculated by the formula

where is the distance between concrete tiles before testing, mm;

- specimen elongation at maximum load, mm.

To determine the nature of the destruction, concrete tiles are freed from grips, the main mass of the mastic is cut off with a knife moistened with water, so that a layer of mastic of no more than 3 mm remains on their surface. A stencil is applied to the place where the mastic separates from the surface of the concrete tile to which it was glued (Fig. 2) and the area of separation is calculated.

When the mastic is detached from the concrete tile in an area of no more than 10% of the total area of the sample, the nature of the destruction is considered cohesive.

3.6. Determination of water absorption

The essence of the method is to determine the mass of water absorbed by a sample of mastic when it is kept in water for a specified time.

3.6.1. To determine water absorption, mastic heated to 70 ° C (about 10 g) is applied in an even layer on a glass plate or polyethylene film 5050 mm in size, previously weighed with an error of 0.001 g.

Samples with mastic are weighed with an error of 0.001 g and kept in water for 24 h at a temperature of (20 ± 2) ° C. After removing from the water, the samples are blotted with filter paper and weighed again with the same accuracy.

3.6.2. Water absorption in% is calculated by the formula

where is the mass of the sample before testing, g;

is the mass of the sample after testing, g;

- mass of mastic, g.
________________
* The formula and the explication to it correspond to the original. - Note from the manufacturer of the database.

3.7. Determination of consistency

The consistency of the mastic is characterized by the depth of immersion in the mastic of a standard cone with a total mass of 150 g at a given temperature and for a specified time.

The immersion depth of the cone is determined in accordance with the requirements of GOST 5346-78, while the vessel specified in the standard is filled with mastic heated to 70 ° C so that no air bubbles form in it, and kept for 3 hours at a temperature of (20 ± 2) ° WITH.

3.8. Determination of mastic runoff at 70 ° C (heat resistance)

The essence of the method is to determine the amount of mastic drainage under its own weight at a given temperature and time.

3.8.1. For testing, a tray is used, the diagram of which is shown in Fig. 3.

Damn. 3. Test Tray Layout

The tray should be made of tinplate with a thickness of 1.0-1.4 mm. Before filling the tray, the mastic is preliminarily kept for about 1 hour in a thermostat at a temperature of 70 ° C. Then the tray is tightly filled with mastic so that the mastic protrudes slightly above the upper and end cuttings of the side walls.

After holding the filled tray in a horizontal position for 3 hours at a temperature of (20 ± 2) ° C, the protruding mastic is cut flush with the upper and end cuts of the side walls of the tray.

A rod is inserted into the ears of the tray, the tray is placed in a thermostat in an upright position with the protruding part down and kept at a temperature of 70 ° C for 24 hours.

3.9. Determination of the relative elongation at a temperature of 50 ° C

3.9.1. The tests are carried out on a specially equipped cryochamber of a tensile testing machine, the requirements for which are given in clause 3.5.1, at a speed of movement of the movable clamp (1.0 ± 0.5) mm / min.

Preparation of samples for testing is carried out in accordance with the requirements given in clause 3.5.2.

The prepared samples are kept for 1 hour in a cryochamber at a temperature of minus 50 ° C.

The test of the sample is carried out 15 minutes after fixing it in the grips of the tensile testing machine.

When the elongation of the specimen reaches 7% of the original distance between the concrete slabs, the test is stopped.

The determination of the relative elongation of the sample at a temperature of minus 50 ° C was carried out by the Institute "VNIIstroypolymer" of the USSR Ministry of Construction Materials until January 1, 1982.

3.10. Determination of homogeneity

3.10.1. The homogeneity of the mastic is determined visually in the briquette cut.

3.11. Determination of plasticizer migration

For testing, a brass ring 5 mm high, 25 mm outer diameter, 20 mm inner diameter and filter paper in accordance with GOST 12026-76 are used.

To determine the migration of the plasticizer, a layer of filter paper is placed on a glass plate and a brass ring is placed on it. The ring is filled with the test mastic.

The manufactured samples are kept in a thermostat at (100 ± 5 ° C) for 4 hours. After removing the samples from the thermostat, no traces of plasticizer should be found on the filter paper.

4. Marking, packaging, transportation and storage

4.1. The mastic is packed in rectangular briquettes with a cross-section of 6030 mm and a length of up to 500 mm, which are wrapped in a polyethylene film with a thickness of no more than 40 microns in accordance with GOST 10354-82.

At the request of the consumer, it is allowed to pack the mastic into briquettes with a diameter of 30-50 mm and a length of no more than 150 cm.

Briquettes are packed in wooden or cardboard boxes, wooden barrels or winding drums.

By agreement with the consumer, it is allowed to pack the mastic in another container.

The gross weight of one container must be no more than 50 kg.

name of the mastic;

batch number and date of manufacture;

net weight of the packed place;

shelf life of the mastic;

4.3. The manufacturer must accompany each shipped batch of mastic with instructions for use and a document of the established form, which must indicate:

the name of the organization subordinate to the manufacturer;

name and address of the manufacturer or its trademark;

name of the mastic;

batch number and date of manufacture;

net weight of the packed place;

results of physical and mechanical tests;

designation of this standard.

4.4. All shipping documentation for mastic of the highest quality category must have the image of the State Quality Mark, assigned in the manner established by the USSR State Standard.

4.5. Mastic is allowed to be transported by any type of transport in conditions that ensure its protection from the effects of precipitation, sunlight and mechanical damage.

4.6. To protect the mastic from exposure to sunlight and atmospheric precipitation, it should be stored indoors.

4.7. During transportation and storage, it is prohibited to throw containers with mastic.

5. Directions for use

5.1. Sealing non-hardening mastic should be used in accordance with its instructions for use.

5.2. Before use, the mastic must be kept at a temperature of (20 ± 2) ° С for at least 24 hours.

6. Manufacturer's Warranties

6.1. The manufacturer must ensure that the mastic complies with the requirements of this standard, subject to the conditions of transportation, storage and operation.

6.2. The guaranteed shelf life of the mastic is one year from the date of manufacture.

6.3. After the expiration of the guaranteed storage period, the mastic must be checked for compliance with the requirements of this standard before use.

Electronic text of the document
prepared by Kodeks CJSC and verified by:
official publication
Moscow: Standards Publishing House, 1990

UDC 668.395: 006.354 GOST 24064-80

Group L27

STATE STANDARD OF THE UNION OF SSR

Rubber adhesive mastics

Technical conditions

Rubber adhering mastics.

Date of introduction 1982-01-01

APPROVED AND PUT INTO EFFECT by the Decree of the USSR State Committee for Construction Affairs dated March 28, 1980 No. 41

REPLACE GOST 5.1907-73

REPUBLICATION. May 1988

This standard applies to adhesive rubber mastics, which are a viscous pasty homogeneous mass and are made from chloroprene rubber modified with a non-darkening antioxidant, indenecumarone resin, fillers and solvents.

Mastics are intended for gluing PVC and rubber roll and tile floor coverings, nitrolinoleum, parquet, as well as profile molded products and sealing sealing gaskets.

1.1. Adhesive rubber mastics, depending on the content of chloroprene rubber and the area of application, should be produced in the following grades indicated in Table 1.

Table 1

Example symbol adhesive rubber mastic brand KN-2:

Adhesive rubber mastic KN-2 GOST 24064-80

2. Technical requirements

2.1. Adhesive rubber mastics must be manufactured in accordance with the requirements of this standard according to technological regulations approved in the prescribed manner.

2.2. Indicators of the physical and mechanical properties of mastics must comply with the standards specified in table 2.

table 2

	Norm for brand mastic
Name
indicator
The strength of the connection between concrete base and the material to be glued (adhesive capacity), MPA (kgf / cm 2), not less:
24 hours after gluing the samples
72 hours after gluing the samples
Viscosity on a rotary express viscometer EV-3, Pa s (Pz)

(Revised, 1985 amendment)

2.3. The mastic should be a homogeneous mass. For mastic of the I category of quality, more than 5 are not allowed, and for mastic of the highest quality category - more than 3 easily kneaded inclusions on the surface of a plate with an area of 100-110 cm.

2.4. The viscosity of mastics is allowed to be determined using a VZ-246 viscometer. The viscosity of the mastics should not exceed 100 s.

(Revised, 1985, 1987 amendment)

3. Acceptance rules

3.1. The mastics must be accepted by the technical control of the manufacturer in batches. The batch size is set in the amount of no more than shift production on one technological line.

3.2. To check the compliance of the mastic with the requirements of this standard, 5% is taken from each batch, but not less than 3 tare units.

3.3. Samples from container units are taken evenly over the entire height after thorough mixing of the mastic. The mass of each sample must be at least 0.5 kg. The selected samples are combined together, mixed and a total sample weighing at least 2 kg is obtained.

3.4. For each batch of mastic, the adhesive ability should be determined 24 hours after gluing the samples, the viscosity, the content of volatile components, and uniformity.

3.5. The adhesive ability of the mastic 72 hours after gluing the samples should be determined with each change in the recipe, but at least once a quarter.

3.6. Upon receipt of unsatisfactory test results of mastic for at least one of the indicators for it, repeated tests should be carried out on a double number of samples taken from the same batch.

In case of unsatisfactory results of repeated tests, the batch of mastic is not subject to acceptance.

3.7. The consumer has the right to carry out a control check of the quality of the mastic in accordance with the requirements of this standard.

4. Methods of control

4.1. Tests of mastic samples are carried out at a temperature after preliminary keeping them at this temperature for at least 3 hours.

4.2. The number of samples for determining the adhesive ability of mastic, the content of volatile components and uniformity should be at least three for each type of test.

4.3. The value of each indicator of the mastic is calculated as the arithmetic mean of the test results of at least three samples.

4.4. Determination of adhesiveness. The essence of the method is to determine the load normally applied to the gluing plane when the linoleum sample is detached from the concrete tile.

The adhesive ability of KN-3 mastic is determined by the adhesion strength of a sample of PVC linoleum in accordance with GOST 14632-79 or PVC tiles in accordance with GOST 16475-81 with concrete tiles, and the adhesive ability of KN-2 mastic is determined by the adhesion strength of a sample of rubber linoleum in accordance with GOST 16914- 71 with concrete tiles.

4.4.1. Equipment

For testing, a tensile testing machine is used, which must provide:

load measurement error -1%;

load measurement in the range excluding the first and last 10% of the scale;

constant expansion speed of the grippers equal to 100 mm / min.

The tensile testing machine must be equipped with additional grippers shown in Fig. 1.

4.4.2. Sample preparation for testing

A strip of linoleum (50x30) 1.0 mm in size is glued to give it rigidity face on a wooden plate 5-8 mm thick (board, plywood, fibreboard) of the same dimensions. Bonding is carried out at least four days before the test with glue, which ensures a higher bond strength than the tested mastic.

For the manufacture of concrete tiles with a size of 50x30x15 mm, grade 200 concrete is used.

On a sample of linoleum and on a concrete tile, the tested mastic in an amount of 0.2-0.3 g is applied in a uniform layer and kept in air for 6-7 minutes (until tack-free). Then the tile with linoleum is crosswise glued to the concrete tile and the place of gluing is pressed with a load of 1.0 kg.

1 - upper grip; 2 - concrete tiles; 3 - a sample of linoleum; 4 - wooden tiles;

5 - lower grip

Both sides of the concrete tile can be used for bonding linoleum.

The prepared sample is kept at a temperature for 24 and 72 hours.

4.4.3. Testing

A concrete tile of the sample is inserted into the upper grip of the tensile testing machine, and a plate with linoleum is inserted into the lower grip, and the glued linoleum is detached from the concrete tile at a speed of movement of the grippers of 100 mm / min.

4.5. Processing of results

The adhesive capacity of the mastic in MPa () is calculated by the formula

4.6. Determination of viscosity

The viscosity of the mastic is determined 2 hours after manufacture. The viscosity of the mastic is defined as the ratio of the shear stress on the surface of the deformer cylinder rotating in the mastic to the shear rate on its surface.

4.6.1. Equipment

Rotary portable express viscometer EV-3 with measurement errors not exceeding ± 7%, complete with three deformer cylinders with a diameter of 5.15 and 45 mm.

A vessel for mastics with a diameter of 130 and a height of 120 mm.

The EV-3 viscometer is shown schematically in Fig. 2.

Rotary express viscometer EV-3 consists of the following parts: device body 1; the switch of the rotation speed of the cylinder-deformer 2; spring drive with factory key 3; start and stop buttons of the device 4; brake 5, which is turned on and off simultaneously with starting and stopping the device; a unit for measuring resistance moments 6, consisting of an upper disc with a scale and a lower one with an arrow-pointer, a spiral spring between them and a mechanism for determining the number of rotations of the discs; deformer cylinder 7.

4.6.2. Test preparation

In the unit of the resistance moment meter 6, a deformer cylinder with a diameter of 45 mm is fixed (for increased viscosity, a cylinder with a diameter of 15 mm should be used). By turning the switch 2, the rotation speed of the deformer cylinder is set to 40 rpm and the drive is fully started with the key.

The arrow-pointer of the lower disk of the resistance moment meter assembly is set against the zero of the scale of the upper disk.

The level of the investigated mastic should be at a distance of no more than 20 mm from the upper edge of the vessel. Mix the mastic thoroughly before measuring.

4.6.3. Testing

During the tests, it is necessary to maintain the verticality of the axis of the deformer cylinder. The gap between the deformer cylinder, the walls and the bottom of the vessel must be at least 40 mm. The deformer cylinder of the viscometer is immersed in the mastic 1-2 mm below its upper edge. By pressing button 4, the viscometer is turned on. When the deformer cylinder rotates due to the viscosity of the mastic, the lower disc is displaced relative to the upper one. After 4 revolutions of the deformer cylinder, button 4 is abruptly released to stop the device and the reading is taken from the scale of the upper disk of the moment meter.

4.6.4. Processing of results

According to the readings of the device using a monogram (attached to the device), depending on the diameter of the deformer cylinder and the speed of its rotation, the viscosity in pauses is determined with an accuracy of 1 Pz. The discrepancy between parallel measurements should not be more than 5%.

The arithmetic mean of three parallel measurements is taken as the test result.

4.7. The viscosity of mastics on a VZ-246 viscometer, nozzle diameter 6.0 mm, is determined according to GOST 8420-74, while the mastic is diluted with a solvent in a ratio by weight of 4: 1 (mastic: solvent). A mixture of gasoline: ethyl acetate in a 1: 1 ratio is used as a solvent.

(Revised, revised 1987, 1988)

4.8. Determination of the content of volatile components

The essence of the method consists in heating a sample of mastic at a given temperature to a constant mass.

4.9. The homogeneity of the mastic is determined visually by pouring 2.5-3.5 g of it onto a 9x12 cm glass plate with a layer no more than 1 mm thick and viewing it with the naked eye.

5. Packaging, labeling, transportation and storage

5.1. Ready mastic with a net weight of up to 250 kg is packed in hermetically sealed iron barrels in accordance with GOST 13950-84, GOST 6247-79, GOST 17366-80, flasks in accordance with GOST 5799-78, metal cans in accordance with GOST 20882-75.

Mastic with a net weight of 1 to 10 kg is packed in hermetically sealed metal cans in accordance with GOST 6128-81.

By agreement with the consumer, it is allowed to pack the mastic into another hermetically sealed container made of a material that does not enter into chemical interaction with the mastic.

5.2. Jars with mastic net weight from 1 to 10 kg should be packed in wooden boxes according to GOST 18573-86. The gross weight of the box should be no more than 50 kg.

5.3. The filling degree of the container must be no more than 96% of the total container volume.

5.4. Each container must be labeled with a label indicating:

the name of the organization that includes the manufacturer;

name and address of the manufacturer;

name, brand of mastic;

gross and net weight;

batch number;

date of manufacture (day, month, year);

designation of this standard;

shelf life.

The label should have large inscriptions "FLAMMABLE" and "EXPLOSIVE", given short instruction on the use of mastic and depicts the State Quality Mark, assigned in accordance with the established procedure for mastic.

5.5. Each box with cans must additionally contain:

net weight of the can;

the number of cans in the box.

5.6. Each batch of mastic must be accompanied by instructions for use and a document on the quality of the established form, indicating:

the name of the organization, the system of which the manufacturer is part of;

manufacturer's name and address;

product names, brands;

batch number and date of manufacture, test results;

shelf life;

designations of this standard.

5.7. All shipping documentation for mastic of the highest quality category must have the image of the State Quality Mark, assigned in the prescribed manner.

5.8. The mastic is transported by all types of transport in covered vehicles in accordance with the current "Rules for the carriage of goods".

Transportation of mastic at temperatures below minus 20 ° С for more than three days is not allowed.

5.9. The mastic should be stored at a temperature of 5 to 30 ° C, subject to the rules for storing flammable materials.

During storage, the mastic must be protected from direct impact sun rays.

6. Safety requirements

6.1. Adhesive rubber mastics are flammable and explosive.

6.2. Adhesive rubber mastics are toxic. Exceeding the maximum permissible concentration of volatile substances irritates the mucous membranes respiratory tract... Systematic contact of mastic on the skin can lead to dermatitis and eczema.

Determination of harmful concentrations of styrene emitted by mastics is carried out in accordance with the Guidelines for the determination of styrene in the air, approved by the Ministry of Health of the USSR on August 5, 1976, No. 1493-76, naphthalene - by the technical specifications for the method for determining naphthalene in air, approved by the Ministry of Health of the USSR on May 16 1969, No. 802-69, gasoline - Guidelines for the determination organic matter in the air, approved by the Ministry of Health of the USSR on August 5, 1976, No. 1492-76 and ethyl acetate - technical specifications for the determination harmful substances in the air, approved by the USSR Ministry of Health on October 2, 1964.

6.4. In accordance with GOST 12.1.007-76, adhesive mastics belong to the third hazard class.

6.5. The fire hazard of mastics is determined by the components they contain: gasoline and ethyl acetate.

6.6. The explosion limits of the volume fraction of vapors contained in the mixture with air, the flash point in a closed crucible and the autoignition of gasoline are given in GOST 443-76.

The flash point in an open crucible, the area and temperature limits of ignition of ethyl acetate are given in GOST 8981-78.

6.7. Determination of the autoignition temperature of vapors in air is carried out in accordance with GOST 12.1.044-84, the flash point in a closed crucible and ignition temperature - in accordance with GOST 12.1.021-80 and the temperature limits of ignition of vapors in air - in accordance with GOST 12.1.022-80.

6.8. If the adhesive mastic catches fire, use a fire extinguisher, asbestos cloth, talcum powder or sand. Do not use water when extinguishing.

6.9. When working with adhesive mastic, safe working conditions must be provided in accordance with the requirements of SNiP III-A.11-70 "Safety in construction".

6.10. The mode for draining and filling mastics must comply with those specified in the "Rules for protection against static electricity in the chemical, petrochemical and oil refining industries" approved by the USSR State Construction Committee, the Central Committee of the Petroleum and Chemical Industry Workers' Union and the USSR State Technical Supervision Service.

7. Directions for use

7.1. Adhesive rubber mastics should be used in accordance with the instructions for use, including the section on safety.

7.2. When working with mastic, it is necessary to use personal protective equipment in accordance with the standard industry standards approved by The State Committee USSR on Labor and Social Issues and the Presidium of the All-Union Central Council of Trade Unions dated December 30, 1959 No. 1097 / P-27.

8. Manufacturer's Warranties

8.1. The manufacturer guarantees the conformity of the mastics to the requirements of this standard, subject to the conditions of storage and transportation.

8.2. The guaranteed shelf life of mastics is 2.5 months from the date of manufacture.

8.3. After the expiration of the guaranteed storage period, the mastic must be checked for compliance with the requirements of this standard before use.