硫酸盐类盐渍土，因其含有过多的硫酸盐而表现出特殊的工程性质。如遇到干湿交替与温度变化时土体膨胀、松散、强度降低，呈现出特殊的“盐胀”现象；它对水分颇为敏感，在土的填筑压实过程中，对含水量的严格控制已经引起工程人员的重视。这种因硫酸盐存在的盐渍土的特殊的工程性质，在工程实践中要认真的采取对策。 Sulfate saline soil, because it contains too much sulfate and showed a special engineering properties. In the event of alternation between wet and dry temperature, the soil expands, loosens and the strength decreases, presenting a special phenomenon of “salt expansion”; it is quite sensitive to moisture. During the compaction of soil, the water content Strict control has drawn the attention of engineers. Due to the special engineering nature of the saline soil in the presence of sulphate, countermeasures should be taken seriously in engineering practice.