Liquid anchor is an alternative solution for mounting mounting structures. He replaced the traditional mechanical method. The fastening is fixed due to the hardening of the chemical composition in the basis of the material. Using this method does not provide spacers, which indicates the absence of deformation stress.
Area of use
Such a fastener is used for installation in materials with weak solidity or density, among them:
- foam block;
- shell rock;
- clinker brick;
- hollow blocks ;
- aerated concrete.
Key Features
Liquid anchor 20 years ago was considered an expensive novelty, and was used only as an experiment. Since then, the composition and technique of such anchors stepped forward, which made this type of fasteners advantageous and cheaper when working with complex materials. Quite often, this technology is called gluing dowels.
Chemical anchor is a synthetic two-component resin for joining and fixing metal products with base material. Such a solution appeared on the market relatively recently, but due to its outstanding characteristics, it has won the recognition of consumers. Chemical anchors are most often used when conventional plastic or metal dowels do not cope with structural retention.
Liquid anchor found its distribution when working with:
- dense concrete;
- porous materials;
hollow construction products.
As for porous materials, expanded clay concrete, cellular concrete, sandstone and limestone should be highlighted among them. If we are talking about building products, then in this case it is necessary to mention porous ceramics and brick.
Varieties of Liquid Anchors
Liquid anchor is offered for sale in two varieties, among which are ampoule and injection. The first are one- and two-component composition. As for injectables, 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, it hardens when exposed to air. Before using this solution, holes are drilled in the material where the ampoule with the polyester resin is placed . At the next stage, an anchor in the form of a metal stud is screwed there. The ampoule breaks, glue is released from there, which seizes. Pieces of glass at the same time fulfill the role of reinforcement.
A liquid chemical anchor can be mixed with styrene, while setting will depend on air temperature and material grade. Injection anchors are used as follows. At the first stage, a hole is made in concrete, the inner cavity of which is well cleaned. There glue is squeezed out and a fastener is inserted. In the process of solidification, the composition fills all pores and bumps. More such a technique is suitable for empty materials.
Features of the liquid anchor HIT-RE 100 from the manufacturer Hilti
The Hilti liquid anchor is very popular with consumers today. Among other varieties on sale you can find the HIT-RE 100. This epoxy adhesive is designed to install rebar and anchors in concrete. The basis is epoxy glue. This mixture can be transported and stored at temperatures ranging from +5 to +25 ° C. The anchor can be operated at 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 you to adjust the elements during installation. The Hilti Liquid Anchor, the method of application of which will be mentioned below, is suitable for indoor and outdoor use in conjunction with the material in a different state, namely:
Areas of use for the anchor are:
- valve replacement;
- fastening of steel structures;
- fixation of steel elements;
- connection and fastening of concrete reinforcement.
Cost and key features of Hit Re 500 fluid anchor from Hilti
The above-mentioned liquid anchor, the price of which is 2200 rubles. for packaging, great for holes that have an impressive diameter and depth, and were made using diamond technology. The material is reliable and high quality. He is able to undergo impressive loads and allows you to install studs, the diameter of which exceeds M24.
There are no stresses in concrete, this reduces the center distance and the pitch to the edge. The anchor is flexible, it can be used even in wet holes, while adhesion is not reduced. The packaging has an economical dispenser, so you will not have to put much effort into the injection. Construction waste is reduced thanks to its 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 due to the red color of the mixture.
Hilti fluid anchor flow rate
The flow rate of the chemical anchor will vary depending on the diameter of the hole, 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. The diameter of the hole is equivalent to 10 mm. Using a 300 ml cartridge, you can 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 compound with a cavity diameter of 12 mm. Using a 300 ml cartridge, you can fill 44.7 holes. If the diameter of the anchor reaches M30, and the standard hole depth is 280 mm, then the volume of the composition for one hole will be equivalent to 177.71 ml. These data are relevant for holes with a diameter of 35 mm. By purchasing a cartridge, the volume of which is 385 ml, you can fill 2.2 holes with the above characteristics.
Instructions for use
Drilling holes before filling follows one of two methods:
- use of a diamond machine;
- the use of a hammer drill.
The first technology is the most preferred, because the holes are perfectly round and even. As for technology with a perforator, it should include the use of calibrated drills. Sludge should be removed with a hand pump or compressor.
The installation of the anchor should be carried out using special equipment. If you decide to use a liquid anchor, the instructions for its use by you must be studied. At the next stage, the reinforcement should be installed by immersion, acting on it with little effort. In the process, a small amount of the mixture will appear on the surface, which should be removed before solidification.
The craftsman should use construction gloves and safety glasses. After installing the reinforcing outlet, it is necessary to wedge until the anchor has completely hardened so that the element is not stretched under the influence of 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 at the base. The anchor will not be damaged on the outside. If you carry out installation at low temperatures, then the base material must be heated using a propane burner or a building hair dryer. Before installation, the stud is cleaned of rust.