GOPHER GROUT

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Granular bentonite for annular sealing

 

GOPHER GROUT granular bentonite grouting composition contains high‐swelling sodium montmorillonite clay. It is designed for use in water wells and monitoring wells, for sealing the annular space around well casing, and for plugging drilled holes and abandoned wells. GOPHER GROUT composition contains no organic additives or polymers.

A one‐sack formulation of GOPHER GROUT granular bentonite grouting composition mixes with freshwater to yield 20%‐pumpable grouting slurry with an extended working time. When set up, the GOPHER GROUT grouting composition develops a satisfactory seal with adequate structural strength and low‐hydraulic conductivity. When properly placed, GOPHER GROUT grouting composition remains flexible, rehydratable and unstratified through heating and cooling cycles.

Applications

  • Sanitary sealing in water well construction
  • Sealing monitor wells
  • Sealing and grouting casing
  • Plugging and abandoning exploration boreholes

Advantages

  • Develops lower‐solids slurries up to 20% total active solids
  • Easily mixed and handled with most conventional mixing equipment
  • Permanent, flexible seal prevents entry of contaminants from the surface
  • Extended working time controlled by grout solids content
  • Firm texture providing structural stability after grout set
  • Inorganic, non‐fermenting and non‐toxic
  • Certified to NSF/ANSI 60

 

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