Chemical Grouting

Chemical grouting increases the strength and stiffness of the soil by transforming granular soils into a solid stone-like mass. The polyurethane grout is pressure-injected through a pipe into low-cohesion soils. As it permeates the soil, the chemical grout converts soil into a solid mass with reduced permeability. Chemical grouting is best suited for sands and for soils above the treatment zones for compaction grouting.

Uses of Chemical Grouting

Chemical grouting is used for:

Underpinning of existing foundations

Creating support walls for excavation

Stabilizing soils for tunneling

Creating water-cutoff walls

Sinkhole repair

Common areas for chemical grouting are pool decks, sidewalks and beneath slab foundations.

Benefits of Chemical Grouting

Can usually be completed without interrupting facility operations

Viable in difficult-to-access areas

Ideal for areas where space is limited

Does not require structural connection to a foundation