The method is not very suitable for repairing cracks on a concrete foundation wall.This gives us the assurance that the crack will be infiltrated to its end points and from one side to the other.Īlthough this method is effective in many situations, it does have some limitations: This technique aims to insert the polyurethane injection from the middle of the crack.
It is demonstrated by installing metal mechanical injection ports at a 45-degree angle to the crack. The following photo clearly illustrates the crack injection method. It is important to remember that too much flow and too much pressure will create micro-cracks in the concrete and around the injection port, where the liquid will escape instead of infiltrating the crack. In the event that the pressure is unable to reach a minimum of 2500 psi or exceed 3500 psi, you would get poor quality work and assured inefficiency. In the residential sector, the resistance of concrete on a wall or foundation floor is approximately 20-25 MPa or 2900-3625 psi. The technician’s work involves regulating the flow, as well as the pressure of the liquid in the concrete crack for a lasting final result. The required equipment was specially designed by a highly qualified technician to infiltrate any type of cracks with a 100% efficiency rate. High-pressure injection involves inserting a liquid into a very narrow crack (less than 1/32″ or 0.75 cm) at very high pressure. Both techniques used by Foundation Crack Expert Group enable the quick and long-lasting repair of your foundations. If you want to repair the cracks on your home’s walls or foundations, there are two different crack injection techniques available to you: high-pressure and low-pressure injection. Crack injection repair: Which technique to choose
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