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Method of sealing permeable earth surface or subsurface materials having alkaline conditions by induced precipitation of carbonates
Method of sealing permeable earth surface or subsurface materials having alkaline conditions by induced precipitation of carbonates
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机译：通过诱导碳酸盐沉淀来密封具有碱性条件的渗透性地表或地下材料的方法
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摘要
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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