A chemical anchor is a very useful solution when it comes to applications involving both hollow and solid materials such as bricks, concrete, stone, porous concrete etc.
Resin is applied into an orifice in the material, followed by the insertion of a bolt, rod or other fastening element capable of handling heavy loads.
The product is composed of the resin itself and a product known as a catalyser. These two substances are mixed in a mixing nozzle with an internal spiral causing both substances react and activating the chemical anchor.
There are different types of resin. The choice of which resin to use depends on the application, the material in question and the load which the anchor will have to withstand.
Polyester Resin: Polyester resin is recommended for use with solid brick, semi-solid brick, hollow brick and hollow concrete block. It can handle masonry loads of up to 595 kg and concrete loads of up to 4600 kg.
Styrene-Free Polyester Resin: This resin is recommended for use with the same materials as standard polyester resin, including concrete. It can handle higher loads, of up to 700kg in the case of masonry and 8900 kg in that of concrete.
Styrene-Free Epoxy Acrylate: The main advantage of this product is that it can be used with moist or slightly wet surfaces. It is recommended for use with solid brick, concrete, aerated concrete and wood. It can withstand loads up to 9500 kg in concrete applications.
Styrene-Free Vinylester: This is the most versatile of all the resins in our range. It can be used with all the previously mentioned materials (hollow brick, semi-solid brick, hollow brick, hollow concrete blocks, concrete, aerated concrete, cracked CLS and wood). It can take loads of up to 15000 kg in concrete and can also be used in surfaces covered in water. This resin is dielectric and is fire resistant for 120 minutes.
Chemical anchors are very easy to use. You just have to follow these steps:
- Drill a hole in the material
The first step is to drill a hole in the surface of the material where you intend to use the chemical anchor. Remember to make sure you use the correct type of resin for the material in question.
- Clean up the debris after drilling.
Once the hole has been drilled, it is very important to clean it out thoroughly in order to ensure optimum adherence when the resin is used. This can be done using a blow-out pump and a steel brush.
- Insert the resin
The choice of sleeve will depend on the kind of material you have drilled into. In the case of hollow material a nylon sleeve should be used. This sleeve helps to disperse the resin applied evenly within the drilled hole.
If the material is solid the nylon sleeve is not required. In this case the mixture can be applied directly into the drilled hole.
Before introducing the resin into the hole, it is very important to bear in mind the following: the first 5 to 10 cm of the product should be squeezed out onto a cloth or piece of paper until the mixture has a uniform colour and consistent texture. This indicates that the two components (resin and catalyser) are properly mixed, and that the product is ready for use.
- Insert the bolt or fastening element.
Once the resin has been applied into the hole (with or without nylon sleeve) the bolt, threaded rod etc should be inserted. We recommend that you turn the fastener around a few times within the hole so that the resin adheres perfectly to its surface.
Remember that the resin takes only a few minutes to set. This means that you only have limited time to assemble the different components. The fastener should be inserted into the hole as soon as the resin has been applied.
- Curing time
It is very important to respect the hardening time recommended by the manufacturer.