Method of sealing permeable earth surface or sub-surface...

Details Method of sealing permeable earth surface or sub-surface... Method of sealing permeable earth surface or sub-surface...

E - Fixed Constructions

02

B

166/16

E02B 3/12 (2006.01) B09B 1/00 (2006.01) C04B 41/50 (2006.01) C09K 17/04 (2006.01)

Patent

CA 1300491

Abstract Of The Disclosure A method of artificially sealing cracks, fissures or other voids in earth strata under alkaline conditions, or in alkaline structural materials. Sealing is effected by induced precipitation of calcium carbonate, usually in the form of calcite, either in alkaline rocks, in other rocks where alkaline groundwaters are present, or in structures of alkaline materials such as cement or marble. A number of examples are discussed for effecting the desired precipitation including application of aqueous solutions which affect either calcium or carbonate ion concentration, increasing pH by degassing of carbonated water and application of slurries of less stable forms of calcium carbonate (aragonite and vaterite) to result in precipitation of the more stable form (calcite).

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