Method of sealing permeable earth surface or subsurface material

Details Method of sealing permeable earth surface or subsurface material Method of sealing permeable earth surface or subsurface material

1988-06-06

1989-09-26

Corbin, David H.

Hydraulic and earth engineering

Earth treatment or control

Chemical

405264, E02D 312

Patent

active

048696218

ABSTRACT:
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).

REFERENCES:
patent: 3793841 (1974-02-01), Dozsa
patent: 3876439 (1975-04-01), Schneider
patent: 4136998 (1979-01-01), Bassier et al.
patent: 4233015 (1980-11-01), Teague et al.

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