What Is The Best Concrete Adhesive?

Jul 27, 2020Concrete

The traditional answer to what is the best concrete adhesive is Portland cement.

But there’s a chemical approach to it as well. With so many different adhesive options for concrete available today, the best type very much depends on the type of application you have in mind. Several adhesives can bond to concrete, but to achieve a long-lasting connection, you must introduce a high-quality construction grade liquid adhesive between concrete and the material that’s to be worked upon.

What is a concrete adhesive?

Since concrete cannot stick to any of the surfaces on its own, a bonding agent AKA concrete adhesive must be applied to seal the two materials. A concrete adhesive is a brush-on construction-grade bonding agent that helps attach the layer of new concrete to the old concrete or other surfaces. Most of these adhesives are easy to apply and directly bond with surfaces such as stone, metal, wood, glass, masonry, polystyrene, and practically any two dissimilar materials. It’s manufactured for adhering the tricky and porous nature of concrete to other surfaces – which is otherwise difficult.

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Compared to traditional approaches, the job of concrete adhesive is to preserve the connection and consistent distribution of rigidity on the surface. The adhesive’s penetrability allows it to maintain close contact with cement surfaces and, in turn, trigger powerful adhesion properties thwarting cracks and other damage. This makes the two different layers behave as one, increasing the overall strength and efficiency. Therefore, specific formulas are produced, keeping in mind the different types of materials you might need to bond the concrete with.

What are the properties of the best concrete adhesive?

When concrete floors get worn out or damaged, people either destroy the floor or simply resurface the existing one. This is the most prominent reason for using a concrete adhesive. Since removing and re-pouring is expensive and time-consuming, restructuring the existing concrete sounds like a more feasible option. For this, a layer of fresh concrete is added on top of the old surface. And just so the concrete doesn’t sit detached, rather function as a serviceable floor, a concrete adhesive comes to rescue!

So, the best adhesive is the one that’s:

Water and heat resistant, high in strength, fill the gaps, and do not require sealing.

Adhesives with high tension transmission capacity are more suitable for related applications.

Priming the material in most cases isn’t also required for the adhesive to work if the surface is free from dust, grease, paint, etc.

A high-quality concrete adhesive does not bleed or stain the masonry or stonework.

It also absorbs any vibrations and shocks while letting the material contract or expand without weakening its own strength.

Moreover, superior grade construction adhesive has a high initial grab, which means it may not demand temporary support while it cures.

To get the most beneficial results, you must also be aware of the product’s limitations. Here we talk about a few options that are commonly used, one of which includes epoxy that fairly bonds well with concrete. But the problem that lies with using epoxy adhesives is that it certainly bonds the two surfaces pretty well, but it isn’t flexible and weakens quickly. Moisture and temperature changes also affect its strength, causing it to break eventually. Epoxy adhesives come with two individual components that are to be mixed with careful measuring to achieve the right properties. Plus, it requires temporary supports while it cures.

Concrete glues are also employed, but they are suitable for smaller DIY tasks – not heavy-duty commercial operations. These have problems with flexibility, bonding strength, gap-filling, and initial grab. Glue is ideal for sticking carpet, tiles, and kitchen parts to the concrete. And it’s the same case with contact and mastic adhesives. Plus, concrete will require sealing before applying any of these adhesive options.

How is concrete adhesive used?

Surface prep is the foremost step. The surface in question must be cleaned and gotten rid of contaminants to facilitate proper working. If it’s old, worn-out concrete that you’re dealing with, stubborn stains can also be removed with vacuum shot blasting or pressure washing.

Upon cleaning the surface thoroughly, prepare the bonding adhesive. Shake the chemical well, dilute the same with water, and mix the ingredients properly. It’s always recommended to read the manufacturer’s instructions to follow the right procedure. Depending on the area you need to work on, use a broom, brush, or a roller to carefully and systematically paint the primary layer of adhesive onto the existing surface. Once diluted with water, this adhesive mixture must be used within a set timeframe, or else it becomes unworkable. Correct measurement and consistency will make sure that the fresh concrete will adhere to the older concrete firmly. For larger commercial spaces, the area is sprayed to accelerate the process.

Make sure the concreting has been done beforehand, and you pour the new layer before the layer of adhesive dries off completely. After the fresh concrete is poured, it’s smoothened with a trowel and left to be cured later on.

Need More Guidance? Contact T&T Redi Mix!

If you require any specific guidance on choosing the best industrial strength bonding agent for your project, contact T&T Redi Mix. Get in touch with our representatives on (214) 785-8037 or leave your queries online.

We also deal with residential and commercial ready mix concrete services and are the most trusted suppliers in North Texas. We supply ready mix concrete at reasonable rates and with 100% quality assurance. No project is too small or too big for us – you can certainly count on us to keep up with your requirements.

We serve the whole of Texas for commercial, residential, retail, and municipality projects. Let us know the details of your project, and we’ll be pleased to help you in the best possible manner.