Grouting composition

Details Grouting composition Grouting composition

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.

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