Review on the Progress of Expansive Soil Improvement in Ten Years

Abstract

In the past ten years, due to the property of expansive soil foundation is worse than the general foundation, a series of new problems have been encountered in the improvement treatment, and the research and solution of these new problems have promoted the sustainable development of technology. The characteristics of various methods and their effects on the improvement effect were summarized. Soil displacement is suitable for projects with high engineering requirements and thin expansive soil layer. For projects with weak expansive soil improvement and high environmental protection requirements, fiber improvement and wind-blown sand improvement can be adopted. The longer the curing period, the better the lime improvement effect. The solid waste improvement should be adopted according to the local waste situation. When the effect of single improvement is not good, compound method can be adopted.