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.

發文機構：Chongqing Engineering Research Center of Building Health Monitoring and Disaster Prevention in Full-Life-Cycle Gansu Academy of Sciences School of Civil Engineering

關鍵詞：sulfatesalinesoilfreeze?thawcyclesLOADsalt-frostheave

分類號： P64[天文地球—地質礦產勘探]