| 摘要 |
PURPOSE:A ground stabilizer capable of shortening gelling time without deteriment to coagulation strength and giving a homogeneous gel with large initial strength, which comprises an alkali silicate, cement, slaked lime, NaCO3 and alumina. CONSTITUTION:An aq. soln. contg. 30-200g/l, in terms of SiO2, of alkali silicate such as sodium silicate is mixed with an aq. slurry contg. 50-250g/l of cement of specific surface area 2,000-4,000cm<2>/g, 25-250g/l of slaked lime, 0.25-25g/l of MgCO3 and 0.25-25g/l of alumina of particle size <=100mu. EFFECT:The purpose of ground reinforcement or water stopping can be accomplished by filling a relatively large pore and an interface between a sticky soil and a sandy layer in the ground with the stabilizer and then injecting a soln.- type chemical of prolonged gelling time into a water-permeable sandy layer. |
