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盐渍土的判别和分类指标的选取对工程措施的制定影响甚深,选择合理的指标对反映盐渍土的工程特性至关重要.本文从硫酸盐渍土的盐胀性出发,分析水、盐、力、热等对盐渍土工程特性的影响,根据病害发生的程度划分盐渍土的等级,确定影响因素的界限值.通过对典型盐渍土地区公路病害特征的调查和对室内工程特性试验研究及现场试验研究的相关资料总结的基础上,分析和归纳国内外有关盐渍土分类资料,紧密结合盐渍土地区公路建设的生产实践,制定出以影响盐渍土工程性质的含盐量、含水量及温度等作为指标的硫酸盐渍土公路工程分类综合体系.“,”The identification and classification with indicators for saline soil has much influence on formulating the engineering measures.Therefore,choosing reasonable indications to reflect the engineering properties of saline soil is very important.This paper makes a start with the study on the salt heaving characteristics of sulfate saline soil and the melt sinking rules of chlorate saline soil,analyzing water,salt,mechanics and temperature impact on the engineering properties of saline soil.According to the levels of distress the degrees of saline soil is divided and the dividing value of influencing factors is determined.With the investigation of the highway distress characteristics in typical saline soil area and the summarization of the relevantly experimental study on the indoor engineering properties and field test,summarizing and analyzing of the classifications date for the saline soil are carried out.With the study and close connection with the construction of highway production practices,for the first time a systematically a comprehensive system of saline soil highway engineering classification with indicators of salinity,salt content,water content and temperature is established,which exert influence on saline soil engineering properties.