PU Injection or also known as Polyurethane Injection is a method commonly used in the industry to seal or stop the water leakage. Polyurethane which is the main material used in this method have the hydrophobic characteristic which it is the molecule that have the ability to repel against the water. Common use of this PU Injection is to repair the crack on the concrete by pressuring this polyurethane into the damage area of water leak and soon the reaction of the chemical will turn it into the expand of foam and seal the crack and stop the water leakage. Therefore, PU Injection the best method to be used in the industry to seal the crack and stop the water leakage.
Characteristic of Polyurethane:
- It has a short fix time, making it perfect for immediate waterstopping.
- The resin fixes ordinarily whether the foundation crack is wet, actively leaking, or dry.
- There are truly a large number of polyurethane resin formulations which is valuable while fixing foundation cracks because the thickness of the resin and fix time can be controlled.
- Polyurethane, when fixed, can be very adaptable relying upon the formulation.
Therefore, it is why the PU Injection method is believed to be the best and quick method to seal the crack and stop the water leakage in the industry due to its flexibility, ability and also the characteristics in the polyurethane itself which is hydrophobic and it repel against the water.