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为了研究现行粗粒盐渍土易溶盐试验方法的合理性,在分析现行规范方法和关于易溶盐测试试验方法研究成果的基础上,选取典型粒径组合条件下的人工配制粗粒盐渍土和天然盐渍土,开展单次降温盐胀试验和多次冻融循环盐胀试验及结果分析,初步确定粗粒盐渍土易溶盐测试试验所取土样的合理过筛粒径;最后,通过室内重配土的易溶盐测试试验进一步验证其合理性。结果表明:利用过5mm筛孔的烘干土样进行粗粒盐渍土的易溶盐试验,能更好地反映其实际工程特性,试验结果也更具代表性。
In order to study the rationality of the current coarse-grained saline soil soluble salt test method, based on the analysis of the current normative method and the research results on the test method of soluble salt, Soil and natural saline soil to carry out a single temperature drop and salt expansion test and repeated freeze-thaw cycles of salt expansion test and results of the preliminary determination of salt-soluble coarse salt soil test soil samples taken reasonable sieving particle size; Finally, the rationality of the indoor redistribution of soil soluble salt test was further verified. The results show that the test of soluble salt of coarse-grained saline soil can be better reflected by the fact that the dried soil sample with 5mm sieve is more representative of the actual engineering characteristics.