Mechanical expansion anchors are first placed into the pre-drilled hole. They then expand, bearing against the concrete surface. Wedge anchors are a common type of MEA. MEAs are easy to install, however they have a relatively low tensile strength and are not recommended for use in tension zones where concrete is likely to crack.

Post-installed anchors are anchor bolts that are installed after the concrete base has been set. A hole is drilled into the concrete and the anchor is then installed into the hole. There are two main types of post-installed anchors: mechanical expansion anchors and adhesive anchors.

Adhesive anchors are anchor bolts that are placed in a pre-drilled hole, which contains an adhesive that dries and bonds to the anchor rod thread as well as the concrete. Adhesive anchors, also known as epoxy anchors, are capable of reaching high bond-stress values in relatively fast cure times. Adhesive anchors are fully threaded rods that can be supplied in many different 

Anchor bolts are used in concrete foundations and masonry walls to secure pieces of wood, steel, or other materials together. The anchor bolts are embedded into the concrete, and then a nut is used to fasten them together. Anchor bolts come in many sizes and shapes depending on their purpose and application. Most commonly, they have a hexagonal head with a washer at one end and a threaded section at the other end.

onclusion:

When it comes to choosing an anchor bolt versus an expansion bolt for your project, it’s important to understand how each type works so that you can make the right decision for your needs. Anchor bolts provide strong support by anchoring pieces of wood or steel together, while expansion bolts provide even more strength by expanding inside predrilled holes in masonry walls or concrete foundations. No matter which type of bolt you choose, both are essential components of any successful construction project!