C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
31/10
C09K 17/00 (2006.01) C04B 24/26 (2006.01) C04B 28/00 (2006.01) C09K 8/46 (2006.01) C09K 8/50 (2006.01) C09K 8/56 (2006.01) E02D 3/12 (2006.01) E21B 21/00 (2006.01)
Patent
CA 1334623
A grouting composition for sealing a borehole or other cavity comprising 90-99.9% finely divided water swellable clay and 0.1-10% thinner. The grouting composition is mixed with fresh water to provide a completely reswellable, unflocculated, easily placed, low permeability sealing composition. The thinner allows a very high concentration of water-swellable clay in the composition. A preferred grouting composition comprises 98-99.9% sodium bentonite and 0.1-2% polyacrylate thinner. In use, 50lb. of the preferred grouting composition is mixed with 11-14 gallons fresh water, to provide a grouting mixture which comprises about 30-35% reswellable solids.
587672
Brown Richard K.
Stichman Robert W.
Ridout & Maybee Llp
Wyo-Ben Inc.
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