Method of subsidence and acid entrained drainage control and admixtures therefor

Abstract

Abstract The back filling of natural and artificial subterranean voids for purposes of surface subsidence control and acid entrained water drainage control coming from such voids with a fluid formed admixture of a cementitious nature which solidifies upon setting in the void, the rate of solidification controlled by the amount of hydraulic cement or silicic acid added to the admixture. In the situation where the grout is employed also for control of acid entrained water drainage, ingredients are added to reduce the acid content to a by-product which is placed in colloidal suspension in a gelatinous material in the admixture due to fermentation of an activating agent with a fermenting agent of vegetable material and eliminate further formation of acid from subterranean potentially formable acid bearing strata to thereby re-establish the water table as well as providing safe palatable water. Admixtures containing natural elements are provided which form a hydrating supporting mass. When the mass solidifies, it possesses a high strength porous nature. In the case of admixtures possessing a fermentation action, there is a leavening action causing the mass when placed in a subterranean void, to bloat and be expansive in nature to completely fill the area of the void.

Inventors

• 👤 William A Davis

Bibliographic Details