Chemical Anchors FAQs

Resin epoxy anchors are designed to harden (cure) slowly, which gives the installer more time to work and finish the installation.

Resin epoxy anchors are very useful when installing rebar or threaded rod into deep holes or embedments. With a longer working time, resin epoxy anchors provide the installer great flexibility and more time to fill the hole and insert the anchor element.  

Resin epoxy anchors can be used in a variety of different applications, but the base material is usually concrete. Typical applications that utilize these anchors are rebar doweling and anchoring.

Resin epoxy anchors are a mixture of two chemical parts, Part A, the Epoxy Resin (larger part), and Part B, a hardener (smaller part), that when mixed creates a bond between the anchor element and the concrete.

The strength of any chemical anchoring fastening point is determined by a multitude of factors. The main factors are: the diameter of the rod or rebar, the depth of the hole (embedment), and the condition of the concrete (wet or dry) at installation. These three factors affect bond strength and are critical in calculating the load capacity of any chemical anchor.

Cure time refers to lengths of time needed for chemical anchors to fully cure before you can place loads or remove concrete formwork. Resin epoxy anchors have slower cure times compared to hybrid adhesive anchors. 

Learn more about Hilti’s resin epoxy (RE) anchor products

Hybrid adhesive anchors are designed to harden (cure) quickly, reducing the time you have to wait before loading the anchor.

Hybrid adhesive anchors can be used in a variety of different applications and base materials. Base materials are usually concrete, grout-filled block, hollow block, and other masonry base materials depending on the hybrid adhesive selected for the application. Typical applications that utilize these anchors include rebar doweling and anchoring.

Hybrid adhesive anchors are a mixture of two chemical parts, Part A, a hybrid adhesive (larger part), and Part B, a hardener (smaller part), that when mixed creates a bond between the anchor element and the base material.

The strength of any chemical anchoring fastening point is determined by a multitude of factors. The main factors are: the diameter of the rod or rebar; the depth of the hole (embedment), and the condition of the base material (wet or dry) at installation. These three factors affect bond strength and are critical in calculating the load capactiy of any chemical anchor.

Cure time refers to the length of time needed for chemical anchors to fully cure before you can place loads or remove concrete formwork. Hybrid adhesive anchors have faster cure times compared to resin epoxy anchors.

Learn more about Hilti's hybrid (HY) adhesive anchor products