Chemical Grouting

Chemical grouting helps turn granular soils into sandstone-like masses through permeation with a low-viscosity grout. The typical method used in chemical grouting includes the following steps:

• A sleeve port pipe is grouted into a predrilled hole.
• Under pressure, the grout is injected through port pipes.
• The grout then permeates the soil and solidifies it into a sandstone-like mass.
• The grouted soil has become stiffer and stronger, and is now less permeable.

Chemical grouting has been used for the following:

• Creating excavation support walls
• Creating water cutoff walls
• Underpinning existing foundations
• Preparing soils for tunneling