This is a water leakage treatment method minus hacking/disruption to the source of water leakage by sealing the water path around the affected area.

Procedure

Also known as PU Grouting, or PU Injection. 13 mm width holes are drilled at the area where water leakages occur for the purpose of installing packers (points) along the way with a diameter of 6" to each other. These serve as a medium (wall plug) for pressure pump to be directed at the area where water leakage occurs. Then, the expanding chemical is forced into the leakage area and made to travel to its source with a very high pressure pump. Within an hour, chemical reaction occurs resulting in an expansion rate of 40 - 50 times to completely block and seal the water passage.

Treatment work is performed at the area where water leakage occurs. No other disruption occurring on site other than the sound of drilling. 

Injection Chemical traveling timelapse.