Calculation of salt-frost heave of sulfate saline soil due to long-term freeze−thaw cycles

作者：Tao Wen,Sai Ying,FengXi Zhou

摘要：Based on salt-frost heave tests of sulfate saline soil under repeated freeze−thaw cycles,this paper discusses the mechanism of the salt-frost heave under long-term freeze−thaw cycles.The results show that the salt-frost heave can be restricted considerably by loads,and there is a critical load for the salt-frost heave cumulative effect.Under this load,peak values of salt-frost heave approach a constant,and the residual values become 0.There is no longer structure heave or cumulative effect of saline soil exposed to freeze−thaw cycles under the critical load.Taking cumulative effect into account in calculations of salt-frost heave,a salt-frost heave model under freeze−thaw cycles is developed.

发文机构：Chongqing Engineering Research Center of Building Health Monitoring and Disaster Prevention in Full-Life-Cycle Gansu Academy of Sciences School of Civil Engineering

关键词：sulfatesalinesoilfreeze−thawcyclesLOADsalt-frostheave

分类号： P64[天文地球—地质矿产勘探]