Chemical Grouts

Chemical grouts can be used for a variety of structures such as dams, tunnels, wastewater, cooling plants and soil formations. Chemical grouts are used to cut off fluids and increase shear, tensile or compressive strengths of structures and soils. Another common use of chemical grouts is for waterproofing structures or containing airborne contaminants. Chemical grouts, whether rigid or flexible, can be injected either by drilling, driving downhole pipe or jetting.

Our focus is remedial projects involving restoration.We perform emergency response actions across theChina.

Chemical grouts have a range of properties that are useful in a wide variety of structural and sealing repairs.Viscosity,setting time and expansiveness can be customized to optimize permeation, strength, or plugging of fluid passages.

Some acrylic grouts with a viscosity less than 2cP (twice that of water) can be used to build cutoff walls in even fine sands, or find and seal joints in clay and cracks in concrete. These are finding application in groundwater containment, as an alternative to fully penetrating sheet pile, slurry walls, or soilcrete columns, because the grout curtain can be placed at specific intervals at depth. They can also be used with compact, unobtrusive drilling equipment for secondary containment around leaky sumps, without taking them out of service.

A fast-setting, expansive urethane grout can seal off high-pressure or high-velocity fluid flows, and be followed by slower setting grout that penetrates smaller fissures. Such sequenced applications have been used in earthen dam repair (where there are piping and settling) and limestone bedrock (with karst solution channeling, and weathering joints).