摘要
硫酸盐渍上在一定的含盐量、含水量、初始密度条件下随温度变化所表现出的盐胀过程有一定规律性。土体的孔隙多少不能反映对盐胀的吸收程度。随初始密度增大，盐胀率减小。试件成型温度不同，降温条件下所表现出的盐胀过程亦有差异。盐胀发生剧裂变化的温度区间并不是固定的，它与孔隙溶液浓度有关。含盐量、含水量、初始密度对盐胀影响程度不同且具有交互作用。
ulphate salty soil under the condition of certain initial density, water contentand salt content, the salt heave process has certain regularity with the change of temperature. The amout of soil pore can not reflect absorbing degress to salt heave. With the differanter of manufacture temperature of samples, the salt heave process will behave differentlyduring cooling. The temperature limits of violent change of salt heave is not fixed, it is related with the concentration of soil pore solution. The salt content, water content and initialdensity have different influnce degress to salt heave, also, there is cross function amongthem.
关键词
硫酸盐渍土
盐胀
土孔隙
土质分析
sulphate salty soil, salt heave, soil pore, initial density
