Chemical anchor

A chemical anchor is a fastening device that provides a monolithic bond with the base material through adhesion and cohesion forces.

A chemical anchor is a two-component adhesive for steel inserts with external or internal thread. The adhesive mix contains synthetic resins, filler and a hardener (added immediately before installing the anchor).

Studs set on adhesive are used for fastening heavy structures to walls made of aerated and foam concrete, cellular ceramic blocks, and hollow brick.

Types

The adhesive compound is supplied in two forms:

• individual ampoules – the content is calculated for one hole of a specific diameter and depth (the designation is marked on the packaging);
• tubes or cartridges of various volumes – divided into two chambers (one containing the resin and filler, the other the hardener).

Installation methods

Installing the anchor with ampoules is performed as follows:

1. A hole is drilled, and dust and debris are removed from it.
2. The ampoule is inserted into the cavity.
3. The stud is installed: it pierces the ampoule, and the adhesive components mix. After curing, the anchor bonds with the base material.

When using anchors in tubes or cartridges, the adhesive and hardener are extruded by a piston into a common chamber, where they mix. The mass is injected into the pre-drilled hole, then the metal element is installed.