Repairing Concrete Cracks Using Epoxy

Throughout the United States and Canada, the number of homes built on poured foundations has significantly increased. Per Item 786 in the Standard Specifications for Construction and Maintenance of Highways, Streets, and Bridges, the Texas Department of Transportation requires unidirectional high-strength carbon fiber fabric, fully saturated with compatible epoxy resin per manufacturer's recommendations, to form a CFRP system when making concrete repairs.
Spencer says high-pressure injection is too forceful for effective residential basement repairs. Designed for the injection of cracks and voids in concrete. Oftentimes, Epoxy Injection cracks in foundation are only addressed with polyurethane or epoxy injections and many contractors focus solely on filling the crack and stopping any leaks and water.
Our repair mortars and concrete systems are compatible with a full range of Sika repair and protection materials so that not only the visible signs of damage are repaired, but deterioration is addressed, extending the service life and sustainability of the structure.

This paste is applied over the entire length of the foundation crack and, in conjunction with the soil outside, serves as a barrier to confine the epoxy within the foundation crack so that the injected epoxy is contained over the entire length of the crack.
Because the blocks are hollow there is no way to ensure that the polyurethane will set up where it needs to be. There are other ways to seal cracks if you have a block wall and unfortunately the best way is the most expensive way, and that is from the outside of the foundation.

Prior to the use of epoxy compounds and due to their versatility and the wide range of available physical and chemical properties of epoxy resin systems, one has to be completely aware and informed before entering the world of epoxies; other than crack repair, epoxy compounds have found a wide variety of uses in the concrete industry.
For example, if a crack requires a structural repair we would use epoxy if all of the conditions that are required for this injection are met. Disadvantages - Epoxy concrete repair injections can be difficult to use on a previously repaired crack or failed DIY attempt.

The former being mainly used for structural crack repair and the later mainly finding use in situations, where movement is expected or water leakages have to be stopped quickly. While there are common cracks and damage found in concrete and foundation not all problems can be resolved with the same solution repeatedly.
When you need to repair a crack in your foundation and don't want to dig up the foundation wall, you should know that there are two ways to fix cracks from the inside: epoxy injection and polyurethane injection. After 24 hours, the epoxy should have penetrated the cracks, at which point the ports can be removed.
Do not allow epoxy to block the port or the crack under it, this is where epoxy must enter the crack. As a consequence, the formerly cracked area has strength exceeding that of forces that would otherwise cause the repaired area from opening outwardly. Both Epoxy resins and polyurethanes are sensitive to water.

Start with a soft and slow approach when you begin injecting the epoxy into the cracks but for larger ones, you may need more pressure. Also, the material holds a strong seal, even while concrete expands and contracts. Kryton's Krystol Concrete Crack Repair System is the complete way to repair cracks and create durable, waterproof structures.

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