2. Drill a hole with a drill, the diameter of which corresponds to the size of the selected stud (as a rule, the hole diameter is 2 ... 4 mm larger than the diameter of the stud). Walls drilled with a diamond drill must be roughened.

3. Thoroughly clean the hole with a steel brush and blow it off with a pump. You should refrain from using unprofessional devices, such as a pharmacy enema, for blowing out - as its volume and air flow are insufficient to remove concrete chips from the hole, especially when installed in the floor. We repeat the cleaning - construction dust deposited on the walls of the drilled hole can reduce the strength of the joint by up to 80%. We do not recommend flushing the hole as this will double the curing time.

4. Remove the cap from the cartridge with the injection mass and put on the nozzle. We recommend using a professional pistol so that the work does not get up because of a poor-quality pistol for silicone sealant that broke down on time. Extrude at least 10 cm until the two-component chemical fastener is mixed evenly and fill the hole more than 2/3.

5. We insert the fastening element into the hole, while the injection mass in a small amount should be squeezed out of the hole. We make 2-3 turns with a hairpin and fix in the desired position for 3 ... 50 minutes. After that, the fixation can be removed, but let the binder finally harden without loading the anchor for 30 ... 90 minutes. The setting and curing times vary depending on the temperature of the substrate material.

6. Load the pin, fix the material to be attached, tighten the nut.

Important to consider when installing in hollow materials:

• For drilling, it is necessary to select the rotary drilling mode on the rock drill. When drilling into masonry, the impact function must be switched off.
• To prevent the injection mass from spreading over the cavities of the hollow base material, it is necessary to insert a metal sleeve or a plastic sleeve into the hole.
• The hole is completely filled with injection compound.

Nowadays, thanks to innovative technological developments, constantly new materials appear that can facilitate and speed up construction work, significantly increase the strength and durability of the structures being created. One of these new products is the chemical anchor, which has recently appeared on the free market.

So, chemical anchor - what is it and how to apply it? A similar question probably arises for many home craftsmen, those who first encountered such a "curiosity" or just heard it. The material is relatively new, and has not yet gained wide popularity, but, for sure, to a greater extent - only due to insufficient information. Therefore, in this publication we will try to fill this gap at least to some extent, consider the types and characteristics of chemical anchors, the main technological methods of their use.

What is a chemical anchor?

A chemical anchor is essentially a two-component adhesive based on synthetic resins. In the technical literature and in the colloquial slang of builders, it has many other names - "gluing anchor", "injection mass", "system that glues the anchor", "liquid dowel or anchor", well, "chemical anchor".

For the first time, this type of fastener was used in the mining industry - for the installation of structures with fastening to loose rocks. Over time, it spread to the entire construction industry.

Unlike traditional anchors with spacers, chemical materials are able to provide high reliability of fixation on an unstable, low-strength or structurally complex material.

Chemical anchors are not just an ordinary tube of glue, but a high-tech fastening system. Usually, in addition to the compositions, devices for drilling holes, mixing guns, mass dispensers, special scrapers and brushes for cleaning holes and other necessary tools and devices are supplied on sale.

The compositions of chemical anchors are selected for a specific task, taking into account the conditions of use, including, of course, the specifics of the material from which the base is erected.

The proportions of the various substances used in the manufacture of chemical anchors are trade secrets of each manufacturer. The only thing that can be said with some degree of certainty is that the composition includes such components as:

• Synthetic resins based on polyurethane, acrylic or polyester.
• Fine quartz sand.
• Cement compound - used as a filler and binder that provides the strength characteristics of the adhesive.
• Hardener.

The principle of operation of a chemical anchor is to fasten a metal rod (stud) using a synthetic adhesive in concrete (including porous concrete), brick and many other structures. The chemical mass penetrates deeply into the base material, filling its pores. The synthetic resins are then hardened to form a monolith that reliably holds the anchor piece in the base.

The technology of fixing with a chemical anchor is simple - a prepared hole is filled with an adhesive mass (using a special dispenser gun or by installing a special capsule). After that, a metal element is inserted into it (most often a hairpin, but it can be just a corrugated reinforcing bar). The chemical composition envelops the metal, as it were, filling even narrow gaps between the threads.

These anchoring connections are significantly higher than conventional anchors or dowels in terms of their ability to withstand the pull-out load. And at very high loads - they have no analogues at all.

It should be noted that the strength of the joints made with the help of chemical anchors is so high that the material is used even when the canopies of buildings, bridges, and in their underwater part, etc.

The use of this material is especially important in cases where traditional anchors and dowels are not able to provide a reliable connection between fasteners and the base. For example, if metal elements need to be fixed in a "weak" foundation, it can be hollow bricks, shell rock, limestone, sandstone, expanded clay concrete, or cellular concrete. Therefore, in recent years, the popularity of this material has been steadily growing.

Different adhesives have different setting and curing times. It can vary from a few hours to a day.

Varieties of chemical anchors

As mentioned above, chemical anchors are usually two-component formulations. Their components are mixed with each other immediately before use. They are produced and marketed in three types: ampoule version, formulations packed in two cartridges, as well as in one cartridge, internally divided into two compartments.

Materials packed in cartridges have the same principle of operation. However, for different types of such packages, a different tool is also required, designed for dispensing the composition into the drilled holes (holes).

• Ampoule anchors - manufactured for a specific borehole diameter. One ampoule is purchased for each attachment point. This type of anchor is generally used for anchoring in the base, which can guarantee high precision and cleanliness when drilling a hole.

The capsule version is more convenient to use in the sense that there is no need to control the filling level of the hole. The slight difference in the borehole and capsule diameters is well compensated by the expansion of the adhesive mass during its hardening.

The ampoule consists of two capsules - with an adhesive mass and a hardener, which are connected by screwing in a threaded metal element, for example, a stud. In this case, the mixing of the hardener and the base substance occurs more evenly than when using cartridges.

However, this version of a chemical anchor is not suitable for use on a cellular base of a vertical structure, since the mass will flow down without having time to harden.

• Two cartridges with different volumes and interconnected at the outlet, containing adhesive and hardener. This version of the chemical anchor requires a special gun for operation for simultaneous portioning of the components into the mixing nozzle. By the way, it is clearly seen that a special spiral is installed inside this mixer, which ensures the most uniform mixing of the components even before their drilled hole is fed.

• One cartridge, but also consisting of two sections, in which the adhesive mass and hardener are also located. They join together and hang in a similar guiding spout during extrusion. But for work, you can use a conventional construction syringe gun, which is convenient for home use.

The last two varieties are divided into universal and intended for gluing metal parts into concrete bases. Both the first and second options are called injection anchors.

The most popular are the universal anchor options. This can be explained by the fact that there is no need to pre-calculate the number of capsules. In addition, such anchors are convenient for filling cone-shaped boreholes that expand into the depth of the base.

Anchors designed for gluing studs or reinforcing bars into a concrete base tend to have a thick consistency. They include corrosion inhibitors and deoxidizers, which are especially important when installing rebar in concrete.

Some anchors designed for concrete require special chemicals to handle rebar and drilled holes, as well as tools to push studs or rods into holes.

Chemical anchors, packaged in cartridges, have a common drawback - it is a considerable difficulty in controlling the filling of the borehole. Often, the mass begins to drain under the influence of gravity if the base is hollow or porous.

It is quite possible to reduce material consumption and achieve uniform distribution in all directions of the borehole by using mesh sleeves. These elements can have different sizes, and are selected in each case individually.

It is difficult to talk about the cost of chemical anchors - the price of various products can differ literally dozens of times. This largely depends on the configuration of the system and, of course, on the manufacturer.

Each of the mentioned types of material is presented on sale by a very considerable number of names, since chemical anchors are produced by many companies. Therefore, it is necessary to take into account that the application technologies can differ significantly from each other.

What to look for when choosing a chemical anchor?

An important task is to achieve guaranteed compliance of the chemical anchor with its characteristics and conditions of its use. To choose the right material, before purchasing it, you must carefully study the instructions located on the packaging or attached to it.

The manufacturer indicates in its recommendations the types of structures and materials of their manufacture, the recommended location of the holes and their dimensions, methods of fastening, the range of humidity and temperature, as well as the permissible loads for different bases. In addition, it is necessary to pay attention to possible restrictions on operating conditions, on the rate of solidification of the composition - this is especially important for chemical anchors of atmospheric hardening.

Advantages and disadvantages of chemical anchors.

Chemical anchors, like all building materials, have their own positive and negative features. It is necessary to have information about them so as not to encounter unpleasant moments when using fasteners and during the operation of the finished structure.

TO merits This specific material can be attributed to the following:

• The tightness of the plugging of the hole after the installation of the anchor.
• No tensile stress in the concrete base.
• Wide range of applications.
• Ease of installation work that does not require experience and special training.
• High strength of the anchor during its hardening, significantly exceeding this parameter for traditional spacers.
• Ability to withstand heavy loads and tensile stresses, i.e. high load-bearing capacity.
• A chemical anchor is a material that is resistant to external atmospheric influences, to corrosion processes, and is inert to chemical influences.
• There are special anchoring compounds with characteristics that allow their use in conditions of high humidity and on waterlogged surfaces, as well as in general for structures created under water.
• The service life of such a connection is comparable to the service life of the base itself and is usually at least fifty years.
• Manufacturers produce adhesives that do not contain toxic substances. These options are selected for interior work. Therefore, when choosing a material, special attention should be paid to this factor.
• The thermal expansion coefficient of the anchors is in the same range as that of the base materials. Thanks to this quality, during the operation of structures, unnecessary internal stresses do not arise during temperature changes.

Special attention should be paid to disadvantages chemical anchors, since they are the ones that cause a lot of trouble:

• Unlike traditional anchoring elements, chemical compositions require a rather long period before the installed fastener is fully ready to accept the load. The fixture readiness period depends on the ambient temperature:

At a temperature of +20 degrees, the curing period will be 25 ÷ 40 minutes;

At 5 degrees - 5.5 ÷ 6 hours;

If the temperature is lower, then the curing (polymerization) of the compositions practically does not occur.

• Short shelf life of unopened packaging. As a rule, it is no more than one year.
• Short life of the composition after opening the cartridge. Therefore, if the package is opened, it must be used immediately.
• The high cost of the material, which scares off many potential consumers.

Chemical anchor manufacturers

A considerable number of both domestic and foreign manufacturers represent their products on the Russian market. In practice, materials produced by well-known European companies have proven themselves flawlessly.

The table below shows the leading manufacturers and a small overview of their product range. In fact, the variety of products they produce is much wider.

Company `s logo	Anchor type	Volume and features of a chemical anchor
Producer "Fischer" (Germany)
	RM	"Reaktionsanker" - an ampoule with an adhesive mass, inside which there is a compartment with a hardener. The manufacturer manufactures ampoules of different sizes - M8 (10 × 80), M10 (12 × 90), M12 (14 × 110), M16 (18 × 125), M20 (24 × 170), M30 (30 × 280).
	FHP	Hammerpatrone is an ampoule with glue and hardener for installing metal elements in a concrete base. Produced in the following sizes - 10 (13 × 90), 12 (15 × 110), 16 (18 × 125), 20 (24 × 180).
	FIS V 360S	Injections-Mortel Double cartridge, requires special pistol to operate. 360 ml main cartridge and two mixers.
	FIS V S 150 C	Injections-Mortel One standard size cartridge. For work, you will need a regular construction gun for standard cartridges. The kit includes a 150 ml cartridge, two mixers and an adapter.
Manufacturer "Hilti" (Liechtenstein)
	HVU	Adhisive Capsule Anchor. Ampoule with meta-acrylic polyurethane resin, quartz sand and hardener. The capsules have the following volume: M8 (10 × 80), M10 (12 × 90), M12 (14 × 110), M16 (18 × 125), M20 (24 × 170), M30 (30 × 280), M33 (37 × 300), M36 (40 × 330), M39 (42 × 360).
	HIT-HY150	Fast Curinq Injection System. These are two twin cartridges with acrylic resin and hardener. A special pistol is required for work. Cartridge volume 330 ml and two hardeners, HIT-HY20 has one hardener.
	HIT-HY50
	HIT-HY20
Producer "Mungo" (Switzerland)
	MSP	Schlagpatrone. Ampoules with resin and hardener. Capsule volume: M8 (10 × 80), M10 (12 × 90), M12 (14 × 110), M16 (18 × 125), M20 (24 × 170).
	MYA	Verbunanker. Ampoules with two components. Volume: M8 (10 × 80), M10 (12 × 90), M12 (14 × 110), M16 (18 × 125), M20 (24 × 170), M30 (30 × 280).
	MIT-P	One cartridge. A standard construction gun is used for work. Cartridge volume 150 ml, two mixers.
	MIT-P	Double cartridge. Set: 235 ml and two mixers.
	MIT-SF	Double cartridge. Volume 380 ml and two mixers.
	MIT-EA	Double cartridge. Volume 825 ml and two mixers.
Producer "Sormat" (Finland)
	KEM	"Kemiallinen ankkuri" - ampoules with polyester resin and hardener, volume M8 (10 × 80), M10 (12 × 90), M12 (14 × 110), M16 (18 × 125), M20 (24 × 170), M30 ( 30 × 280).
	KEMLA	"Kemiallinen lyontiampulli" - ampoules with polyester resin and hardener, volume M8 (10 × 80), M10 (12 × 90), M12 (14 × 110), M16 (18 × 125), M20 (24 × 170).
	ITH	"Injektointitekniika". Polyester injection resin cartridge, 380 and 150 ml
Manufacturer "TOX" (Germany)
	TVA	Verbund-Anker. Ampoules with resin and hardener having a volume of M8 (10 × 80), M10 (12 × 90), M12 (14 × 110), M16 (18 × 125), M20 (24 × 170), M30 (30 × 280).
	THP	Hammerpatrone. Ampoules with resin and hardener, volume M8 (10 × 80), M10 (12 × 90), M12 (14 × 110), M16 (18 × 125), M20 (24 × 170).
	TVM-K	Verbundmortel. Cartridge with injection mass, volume of 380 and 150 ml.

The labeling of capsule products indicates their dimensional parameters. For example, M10 (12 × 90): the letter "M" is the metric thread of the stud, "12" is the diameter of the stud in the section, "12 and 90" is the diameter of the hole and the depth of the metal fastener in the base.

The chemical capsule anchors "Hilti" can be especially distinguished - they are a modified material adapted to the temperature range during installation from -18 to +40 degrees. The manufacturer supplies products for holes from 8 to 30 mm in diameter, so they can be used to install powerful reinforcing rods in the base.

Can you make a chemical anchor yourself?

Ready-made chemical anchors have a rather high cost, as well as a short shelf life after opening the cartridge. Therefore, many craftsmen who begin construction have a question about the independent manufacture of such a composition.

Indeed, it is quite possible to make an analogue of a chemical anchor. The mixture is made on the basis of epoxy resin. The physical and technical characteristics of this component are quite capable of providing excellent adhesion of materials. Epoxy resin has increased adhesion to such base materials as concrete, brick, shell rock, etc., therefore, it may well serve as a basis for creating a composition of its own production.

Making a homemade chemical anchor will require:

• Epoxy resin - ED-20.
• The hardener for it is UP-583.
• Cement or gypsum, you can add a little fine sand as a filler.
• Plasticizer DBP or DEG-1.

When making such a mixture, you should adhere to the following instructions:

• It is necessary to add a plasticizer to the epoxy resin, 5 ÷ 10% of the total resin volume, and then mix thoroughly.
• Further, a filler - gypsum, cement - is poured into the mass and mixed well. Its amount is also small, and should be 5 ÷ 10%.
• The hardener is launched into the mixture last, it is taken in a ratio of 1:10 or 1: 8 of the total volume.

After thorough mixing, you get a ready-to-use composition that must be used immediately. Its curing time is one to two hours, depending on the ambient temperature. Therefore, a homemade anchor must be prepared in portions in order to have time to develop it. The epoxy anchor dries for a long time - 12-24 hours, but the reaction of the resin and hardener begins immediately after mixing the components. The plasticizer increases the life of the composition. If gypsum is added to the mass as a filler, then the setting and hardening time is reduced.

Homemade epoxies have pros and cons

TO advantages include the following qualities:

• High strength characteristics of the hardened composition.
• Minimal curing shrinkage.
• Good adhesion properties.
• Possibility of application at temperatures from -10 to +35 degrees.

Disadvantages these composition can be considered:

• Sufficiently long curing time.
• The possibility of using the compound only for dry and well-cleaned holes.
• During the operation of the structure, a small amount of phenol may be released from the epoxy anchor.

Hole preparation and application of chemical anchors

For the chemical anchor to "work" properly, you should not only use these compounds correctly, but also carefully prepare the holes for the fasteners to be installed.

Drilling and hole preparation rules

Three methods are used to equip bore holes for the installation of metal parts using chemical anchors. Two of them are used for fastening load-bearing elements and complex structural units. The difference between base drilling methods lies in the more accurate drilling of holes intended for critical fasteners. The accuracy of the arrangement guarantees a reduction in the consumption of the chemical anchor and its even distribution along the walls of the hole. It is clear that the diameter of the hole must exceed the diameter of the stud or reinforcement. And when studying the instructions from the manufacturer, you need to pay attention to his recommendations, since they may differ for different compositions.

Responsible fasteners include connections of parts of load-bearing structures, for example, fixing frame walls to a concrete base. Or the installation of cantilever frames of hinged systems, on which a significant static or dynamic load is expected.

The third method of drilling is intended for irresponsible fastening in the load-bearing walls of the structure, derived from materials with a strength grade of M100 and less. The bearing capacity of such materials does not make it possible to equip critical fasteners in them. Therefore, under the created conditions, the chemical anchor can only withstand the statistical load of the hinged system of a certain weight.

Drilling holes is carried out, on which a drill of the required size is installed. In any case, regardless of the type of material, the finished hole requires high-quality dust cleaning. The cleaning process is best done with pressurized air. It is necessary to carefully free the pores of the material inside the hole so that when the anchor composition spreads, it penetrates into them.

For purging, special pumps or cylinders with carbon dioxide are used. If these devices are not at hand, then cleaning at home can be done using a rubber bulb. In this case, they are not limited to only one blowdown. It is recommended to carry out cleaning operations, in shifts - with a brush-brush and compressed air, at least three to four times.

• Straight jig - this device eliminates the runout of the drill and provides a perfectly perpendicular position of the hole to the wall surface.

• Oscillating jig allows to expand the inner space of the borehole to a tapered shape, while maintaining the diameter of the hole at the entrance.

When arranging such a hole, part of the load from the anchor holding the metal element is transferred to the base material (wall). That is, the fastening is more reliable, which is especially important for walls made of materials with low strength.

• Hollow drills are convenient for drilling - they facilitate easier cleaning of holes from construction dust.

Thorough cleaning of the borehole is a prerequisite when using a chemical anchor, as adhesion between materials depends on it. Dust remaining in the pores will be a serious obstacle to the quality contact of the adhesive mass with the base material.

In order for the dust to be removed efficiently with the use of blowing, it is first necessary to process the hole with a special metal brush, which will be able to free the pores of the material. After that, it can be easily removed by blowing the hole.

If boreholes are drilled in closed cell materials, they are flushed. For this purpose, special solutions of surfactants (surfactants) on a water basis are used. When they rinse the holes, a large amount of foam is formed, which is then removed from the holes using compressed air.

It should be noted immediately that for almost all types of chemical anchors, prepared holes are suitable for fastening only immediately after cleaning.

Sequence of work when gluing the anchor

As mentioned above, it is easiest to work with a chemical anchor made in a capsule design. After installing the ampoule, a hairpin is screwed into the prepared hole of the required diameter. During this procedure, the resin is evenly mixed with the hardener.

When introducing the same mass with a pistol, some subtleties must be taken into account:

• If the installation of metal elements is planned to be carried out on a base erected from a porous or hollow material, then a mesh sleeve must be used for the holes. This element is installed in the hole before the glue is introduced and contributes to the uniform distribution of the composition over all surfaces.

• When using a two-component chemical anchor, a mixer must be used. On this guide spout, the compositions are fed in the proportion set by the manufacturer, while mixing with each other. For each of the chemical compositions, a special mixer is used, which comes with the cartridge.

• In order for the hole to be filled with good quality, a special dispenser gun should be used. This element allows the mass to be squeezed out under pressure, due to this, air is well displaced from the hole, while the glue mass takes its place.

• If insertion into the hole of reinforcement or studs with a length of more than 500 mm will be done manually, it is recommended to use a special jig for this purpose, capable of mechanically feeding a metal element under a certain pressure and observing the perpendicularity of the position.

• If ampoule anchors are chosen, then after installing them in the hole, the reinforcement or the pin is often clamped into the chuck of an electric drill and inserted into the hole, turning on medium speed.
• When the metal fastener is installed in the hole, it must remain stationary until the chemical is completely cured. The solidification time for different compositions is different, but at a temperature not lower than 15 ÷ 20 degrees, it averages 35 ÷ 40 minutes. At negative temperatures, the process can take place for 8-12 hours. Therefore, it is recommended to carry out installation work at a temperature not lower than -5 degrees. If the work must take place at lower temperatures, then you should choose special compounds, which can also be found on sale.
• Let's notice one more nuance. Chemical anchors do not always provide adequate tightening retention for a depressed rod or stud. Due to the absence of the initial tension of the metal element, deformation of the fastening may occur. Therefore, when hanging or fixing on an external structure or any device (heavy piece of furniture, etc.), it must be placed close to the supporting structure. Thus, there will be no stretching "neck" of the bracket that is outside the zone of action of the chemical anchor, that is, protruding from the wall. In any case, the pin must be recessed into the base by at least half of its length.

In order not to overload the reader with verbal information, we invite him to watch a video that tells about the chemical anchor of the cartridge type "Hilti HFX" and shows the process of its application.

Video: Purpose of the Hilti HFX chemical anchor and how to work with it

Appendix: How to calculate the consumption of a chemical anchor?

It has already been said that the material is very expensive and requires careful spending. And how to at least roughly calculate how much composition is required to fasten one hairpin (rod)? And how much will it take for the entire forthcoming volume of work?

To do this, we suggest using the capabilities of the online calculators below.

There are two calculators.

• The first of them calculates the flow rate of the composition with a straight cylindrical borehole, which is usually used on structures with a high bearing capacity of the material.
• The second is for a conical borehole, expanding inward, drilled with an oscillating jig. This approach is typical for walls made of materials with low strength (less than M100).

You can compare how much higher the consumption of the adhesive composition becomes in the second case, with all other parameters being equal (the depth of the hole, the diameter of the hole at the entrance to the wall, the diameter of the stud).

Anchoring is one of the most reliable ways of fixing embedded elements in reinforced concrete foundations, walls, brickwork and other structures. Thus, columns, posts, equipment, frames of gates, doors are attached, consoles, awnings, canopies, lamps, and so on are fixed. The main types of anchors used are mechanical and chemical.

When selecting anchors, the characteristics of the base into which they are mounted are taken into account, static and dynamic calculations are performed for given loads, the type and shape of the studs, the installation area, edge and axial distances are taken into account. When using a chemical anchor, the characteristics of its polymer base are additionally taken into account.

The documents regulating the installation of anchor parts are SNiP 2.09.03-85 "Buildings of industrial enterprises", a guide to this SNiP, Eurocode ETAG 001 "Metal Anchors For Use In Concrete", as well as enterprise standards developed by leading manufacturers of mechanical and chemical anchors. For example, the standard "Anchoring to concrete", developed by the Research Center "Construction" together with the specialists of the company "Hilty" and a number of other recommendation guidelines.

In addition, to help design engineers, manufacturers of anchor systems develop proprietary calculators that allow you to quickly select the necessary fastening systems, taking into account the specific installation conditions and regulatory requirements. Some calculation programs can be used online, others work only in desktop mode and require installation on a computer.

Let's consider the most popular software packages:

1. Anchor design software Hilti Profis Anchor
2. Online calculator for the consumption of chemical anchor Tech-KREP
3. Fischer chemical anchor volume calculator
4. Calculation of the volume of the chemical anchor HIMTEX online
5. Desktop software for calculating Mungo anchors
6. Desktop-program for calculation of MKT anchors
7. Foundation bolt weight calculator

1. Program for calculating anchorsHiltiProfisAnchor

Desktop program ProfisAnchor developed by the company Hilti for performing calculations and selection of mechanical and chemical anchors produced under this brand. The program allows you to calculate anchors of various types, shapes and sizes.

The work of the calculation complex is based on innovative design solutions that take into account all the unique parameters of Hilty's anchor systems. Using this service, the user gets access to all the company's products, as well as the ability to quickly and correctly apply the appropriate technical solution for any particular case.

The program requires installation on a computer. You can download the installation file by this link .

2. Online calculator for chemical anchor consumptionTech- KREP

On the Russian site of a well-known manufacturer Tech-KREP(Great Britain) a proprietary calculation program is available online. The calculator allows you to determine the consumption of a chemical anchor for the following positions:

• Eco Stirol anchor - for all types of bases;
• Easf - for all types of concrete structures;
• Persf - for embedding in hollow bricks and similar structures;
• Arctic - used to operate at temperatures below zero;
• Pure Epoxy Solvent Free - used for higher anchor loads.

3. Volume calculator for fischer chemical anchors

Fischer is a world-renowned manufacturer of chemical anchors based on a unique formulation of its own design. Fischer technology eliminates the possibility of serious shrinkage of the composition during the curing process. The curing process can take place over a wide temperature range. The experience of using fischer chemical anchors in the climatic conditions of Russia has more than 10 years.

For the convenience of calculating its products, the company provides a free desktop program. To use it, you need to download the installation file by this link and install it on your computer.

4. Calculation of the volume of the chemical anchor HIMTEX online

Free program for calculating the volume of chemical anchors in production HIMTEX presented at company website .

Calculation of a chemical anchor HIMTEX is carried out in accordance with the installation regulations. In this case, the hole is filled by 2/3 of the volume.

Correct installation implies that the resin should protrude slightly from the hole when pouring. In the case of installation in a hollow base using a mesh-type sleeve, it is completely filled, therefore the volume of the composition increases by 30%.

5. Desktop program for calculating Mungo anchors

Company Mungo offers to use a free desktop program for calculating branded anchors. Service Mungo has the following advantages:

• friendly intuitive interface;
• working with the program is based on a sequence of understandable actions in the presence of prompts;
• data entry can be carried out both in digital and graphical form;
• multilingual support is available;
• the presence of flat and three-dimensional display modes, convenient switching of views;
• personal data can be saved in the service with the ability to access them for subsequent calculations;
• a simple and convenient way of printing, the ability to display the necessary information;
• periodic updating of the program.

In order to download and install the program for calculating anchors, you must follow the link and register on the website Mungo .

6. Desktop-program for calculation of MKT anchors

Company MKT, a renowned German manufacturer of anchors, presents a free program for calculating the parameters of its products.

The result of the desktop program is a ready-made installation of anchors MKT, both mechanical and chemical types. The interface is intuitive. The calculation is made for all products MKT approved for use in accordance with the regulations in force in Europe.

The program is distinguished by the availability of comprehensive information in the issuance of results, as well as the convenience of printing it. In order to download and install the program, you need to go link to the official website of the company.

7. Foundation bolt weight calculator

Great free online calculator calculating the weight of foundation anchor bolts. The program, according to the specified parameters of bolts (diameter, length) and their required number, determines the weight of all elements (nuts, washers, anchor plates, pins), as well as assembled bolts of various types to fill in the specification in the drawings. It is also possible to convert bolt weights back to pieces. All calculations are performed in accordance with GOST 24379.1-2012.

Liquid anchor is an alternative solution for fastening mounting structures. It replaced the traditional mechanical method. The fastening is fixed due to the solidification of the chemical composition in the base of the material. The use of this method does not provide for spacers, which indicates the absence of deformation stress.

Scope of use

Such a mount is used for mounting in materials with weak solidity or density, among them:

• foam block;
• shell rock;
• clinker brick;
• aerated concrete.

Key Features

Even 20 years ago, liquid anchor was considered an expensive novelty, and was used only as an experiment. Since then, the composition and technique of such anchors have stepped forward, which made this type of fasteners predominant and cheaper when working with complex materials. Quite often this technology is called the gluing dowel.

A chemical anchor is a synthetic two-component resin for connecting and fixing metal products to the base material. Such a solution appeared on the market relatively recently, but due to its outstanding characteristics, it won the recognition of consumers. Chemical anchors are most often used when conventional plastic or metal dowels are unable to hold the structure.

Liquid anchor has found its distribution when working with:

• dense concrete;
• porous materials;

hollow building products.

As for porous materials, among them it is necessary to additionally highlight expanded clay concrete, sandstone and limestone. If we are talking about building products, then in this case it is necessary to mention porous ceramics and bricks.

Varieties of liquid anchors

Liquid anchor is offered for sale in two varieties, including ampoule and injection. The first are one- and two-component composition. As for injection, they are sold in tubes and cartridges, and their second name is capsule.

Ampoule liquid anchors are represented by glass cylinders, inside which the resin is located, when exposed to air, it hardens. Before using this solution, holes are drilled in the material where the ampoule is placed. At the next stage, an anchor in the form of a metal hairpin is screwed into it. The ampoule breaks, glue is released from there, which is seized. In this case, pieces of glass act as a reinforcement.

Liquid chemical anchor can be mixed with styrene, and the setting will depend on the air temperature and the grade of the material. Injection anchors are used as follows. At the first stage, a hole is made in the concrete, the inner cavity of which is well cleaned. The glue is squeezed out there and the fastener is inserted. In the process of hardening, the composition fills all the pores and irregularities. This technique is more suitable for void building materials.

Features of the liquid anchor HIT-RE 100 from the manufacturer Hilti

Liquid anchor "Hilty" is very popular with consumers today. Among other varieties on sale you can find HIT-RE 100. This epoxy adhesive is designed for installing reinforcement and anchors in concrete. The base is epoxy glue. This mixture can be transported and stored at temperatures ranging from +5 to +25 ° C. The anchor can be used in a fairly wide temperature range from -40 to +70 ° C.

One of the main advantages of the anchor is the absence of the risk of cracking. The curing time of the mixture is extended, which allows the elements to be adjusted during installation. The Hilti liquid anchor, the method of application of which will be mentioned below, is suitable for indoor and outdoor use together with the material in different states, namely:

• wet;
• dry;
• filled with water.

The areas of use of the anchor are:

• replacement of fittings;
• fastening of steel structures;
• fixing steel elements;
• connection and fastening of concrete reinforcement.

The cost and main features of the Hit Re 500 liquid anchor from the manufacturer Hilti

The aforementioned liquid anchor, the price of which is 2200 rubles. per packaging, excellent for holes that have an impressive diameter and depth, and were made using the material is reliable and of high quality. It is able to withstand impressive loads and allows the installation of studs larger than M24 in diameter.

There are no stresses in the concrete, this reduces the spacing and the spacing to the edge. The anchor is flexible and can be used even in damp holes without compromising adhesion. The packaging has an economical dispenser, so you don't have to apply much effort when injecting. The volume of construction waste is reduced thanks to the unique packaging. The composition does not have a pungent odor, so you can work with it even indoors. Installed fittings and studs can be controlled thanks to the red color of the mixture.

Consumption of Hilti liquid anchor

The consumption of a chemical anchor will vary depending on the hole diameter, its depth and the diameter of the anchor. If the last parameter is equal to M8, and the standard hole depth is 80 mm, then the filling volume of one cavity will be 4.14 ml. In this case, the hole diameter is equivalent to 10 mm. Using a 300 ml cartridge, you will be able to fill 72.4 holes.

With an anchor diameter of M10 and a standard hole depth of 90 mm, you will spend 6.71 ml of the composition with a cavity diameter of 12 mm. Using a 300 ml cartridge, you can fill 44.7 holes. If the anchor diameter reaches M30, and the standard hole depth is 280 mm, then the volume of the compound for one hole will be equivalent to 177.71 ml. This data is valid for a hole with a diameter of 35 mm. With a 385 ml cartridge, you can fill 2.2 holes with the aforementioned characteristics.

Instructions for use

Holes should be drilled prior to filling in one of two ways:

• using a diamond machine;
• the use of a puncher.

The first technology is the most preferable, because the holes are perfectly round and even. As for the technology with a rock drill, it should include the use of calibrated drills. The sludge should be removed with a hand pump or compressor.

The installation of the anchor must be carried out using special equipment. If you decide to use a liquid anchor, you should definitely study the instructions for its use. In the next step, the reinforcement should be installed using the immersion method, acting on it with little force. In the process, a small amount of the mixture will appear on the surface, which should be removed until it hardens.

The foreman should use construction gloves and goggles. After installing the reinforcement outlet, wedge should be performed until the anchor is completely solidified so that the element is not pulled out by its own weight.

Conclusion

After the composition has hardened, it is important to make sure that the anchor has been installed correctly. In this case, the mechanical element should not rotate in the base. The anchoring will not be damaged from the outside. If you carry out installation at low temperatures, then the base material must be heated with a propane burner or a building hair dryer. Before installation, the stud is cleaned of rust.