Experience with chemical stabilization of saturated loesslike loams in the foundation beds of existing structures

Conclusions

As seen from the data presented in this article, the method of gas-silicatization with preliminary activation of the soil not only permits pumping the sodium silicate into the saturated loam without disturbing its structure, but also results in uniform distribution of the grout through the mass being stabilized and ensures a sufficiently high strength, which is important for soils in the foundation beds of buildings under complex hydrogeologic conditions.

The experimental work carried out in the area of the administration building of the Taganrog Metallurgical Plant demonstrated the feasibility of stabilizing soils lying below the water table by the gassilicatization method. The preliminary pumping of gas permits expelling the water from the soil pores and ensures the effectiveness of the injection of the stabilizing grout into the soil mass. Pumping of the gas after injecting the grout results in increased strength and water resistance of the treated mass. The quality of the stabilization operation depends on the regions of pumping of the gas and the grout into the saturated soil, The results of the experimental work permit recommending the wider use in the construction practice of the gas-silicatization method for stabilizing soils lying below the water table.