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Adhesive Anchoring

Adhesive Anchors

Adhesive anchors are used throughout all types of construction. You’ve probably used them in many jobs, big and small.

Nothing performs quite like adhesive anchors for securing heavy loads to concrete, brick or masonry. Don’t know how strong your substrate is? Need to install an anchor close to an edge? Adhesive anchors should be your go-to solution.

These anchors come in a variety of sizes and shapes, which you should choose from based on your load and your substrate. Adhesive anchors provide a more uniform load distribution than mechanical anchors, reduce stress concentrations, and improve overall structural integrity. 

Both anchor and adhesive play a critical roll in the load-bearing capacity of your adhesive anchor, so read on to find out how to choose the right type of anchor material for your job, what style of anchor to use, and how to successfully drill a borehole and insert your anchor. 

Whether you’re working on a new-build commercial project, municipal construction, or a big refurb, adhesive anchors are likely to be needed at some point. They play a huge part in everything from hanging shelves to adding railings to existing structures, to large infrastructure projects like bridge building, signage, and road construction. 

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What Are Adhesive Anchors?

Adhesive anchors are appropriate for everything from large industrial projects to residential construction. They’re also used for retrofits and redesigns on older properties as they’re installed after concrete has been placed and cured.
Just like mechanical anchors, adhesive anchors can be used for both structural and nonstructural connections.

The Benefits of Chemical Anchors

Chemical anchors take most of the load put on them rather than transferring it to the surface they’re installed in. This means adhesive anchors can be used in hollow substrates, block, cracked concrete, and close to edges. They can also be set closer together than mechanical anchors.

Different Types of Adhesive Anchors

Adhesive anchors are usually installed using epoxies, polyester acrylic mixes, or hybrid mixes.

In many cases, epoxies need to be mixed before they’re activated. They also need curing time, from a few minutes to multiple days. 

Mechanical vs Chemical Anchors

Overall, chemical anchors provide more flex than mechanical anchors and also offer protection against weather, chemicals, and other potential sources of corrosion by creating a seal around the metal rod within the adhesive.

For some contractors, mechanical anchors seem more simple to install, but modern chemical anchors are reasonably easy to install too as long as you follow a few simple steps.

Determining Tension Load Tests

When installing anchors, either adhesive or mechanical, you should test the tension load they can hold. This is required for a certain number of anchors across a construction project, but you should also test any anchors you are unsure of. To do so you can use one of two strategies: basing it on the strength design value or using a hydraulic ram.

Adhesive Anchor Infrastructure Applications

Adhesive anchors are used across large infrastructure projects, from schools and hospitals to bridges and roads. Civil projects from chemical plants and water treatment plants to light poles use adhesive anchors in their construction and design.
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