How Concrete Fasteners Work

Concrete fasteners are just one important facet of construction, as there are many small and large aspects involved with building homes. Concrete fasteners, also sometimes referred to as concrete anchors, are important to the process. The purpose of the concrete fastener is to anchor concrete to concrete, as well as other objects to the concrete. The article that follows will explain how concrete fasteners actually work.

Preparation of Concrete Fasteners

Wedge anchors or fasteners are used to secure a myriad of things to concrete floors. Some of these items include fixtures and walls, as well as many other items that could be fastened to concrete. The concrete fastener is installed directly inside the concrete so it can support significant weight. Concrete fasteners strengthen concrete at that point. This strengthening is what allows other heavy materials the ability to be fastened to the concrete. In order to use a concrete fastener a drill has to be placed inside the concrete, for the concrete fastener to be wedged inside. The hole should be the same diameter as the concrete fastener. The item that you want to be installed has to have the concrete fastener inserted through it and into the pilot hole, and then hammered deeper inside the hole for a tight fit.

Composition of Concrete Fasteners

Concrete fasteners attach themselves to the concrete by way of metal tongues. These metal tongues are little flaps of metal that are expanded as the concrete fastener is tightened inside the holes. These little metal flaps act like hooks, which wedge into the hole in a way that makes them nearly impossible to remove or shift their position. Concrete fasteners that are meant for indoor use are typically made from material like carbon steel plated in zinc, so they resist corrosion. Stainless steel concrete fasteners are used outside because they are stronger and provide a more secure installation. These fasteners are also used in treated wood because they are stainless and provide a very strong connection.

Gripping the Concrete

When you first look at concrete fasteners they do not appear to be able to hold up anything of significant weight. In order to really secure the concrete fasteners it has to be tightened. When you tighten concrete fasteners the metal flaps rise from the shaft and grip the concrete. As you tighten the tape it is lifted upward, which expands the flaps and in turn, wedges the concrete fastener in place. The concrete fasteners inside the hole make sure they are properly anchored inside the concrete and cannot be taken out without damaging the concrete. It is the concrete in conjunction with the tightening that causes the metal flaps to bite into the concrete. As you tighten the concrete moves under the metal, causing them to open inside the concrete.