OPG performs 2 kinds of Pressure Grouting:
Concrete Grouting and Chemical Grouting. 

Manhole: Vertical Crack Injection Video
high pressure grouting for waterproofing
Waterproofing a channel by high pressure grouting

Chemical Grouting for Concrete Repair

Chemical grout is used to stop leaks in basements, commercial buildings, dams, manholes, parking garages, reservoirs, storage tanks, subways, tunnels, waste water treatment plants, and in other structures. The primary reasons why chemical grout is used  to stop leaks:

  • Fills Cracks Completely
  • Remains Flexible
  • Forms a Permanent Seal
  • Safe to Use

Permanently Sealed with Chemical Grouting

Permanently Sealed with Chemical GroutingConcrete structures can sometimes move in unanticipated places. Cracks may occur because of the movement. If the movement that caused the crack stops, the area that cracked becomes stable. However, many cracks do not stabilize. Some cracks continue to move throughout the life of a structure because of thermally induced forces on the structure, or due to moisture changes in soil. These cracks often become wider or narrower at throughout the warming and cooling seasons. This continuous movement makes it almost impossible to permanently repair and stop water leaks with materials that become rigid when they cure.

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