津唐港地区盐渍土路基病害分析及改性机制研究

盐渍土的三相构成已不同于一般意义的土,土中盐溶液与土颗粒中的易溶盐分之间存在着随外界条件（如温度、湿度、人为因素等）变化的动态平衡,致使盐渍土作为路基填料稍有处理不当就会出现路面翻浆、盐胀、溶蚀以及路基次生盐渍化等特殊的工程病害。针对津唐港地区盐渍土特点,通过大量试验,分析其组分特征和改性机制,确定土的性质,并针对盐渍土存在问题提出无机结合料的改性处理方案。结果表明,盐渍土经新型固化剂改性后,土体的CBR值显著提高且浸水稳定性有了明显改善,实现了土质改良目标。在此基础上,提出治理路基工程病害的有效方法。

Roadbed disaster analysis and treatment of saline soil in Jin-Tang Harbor

The three states of saline soil are different from the common soil,the salt liquor and salt in soil granule have a homeostasis with the changing of the outside environment(such as temperature,humidity and artificialness),there may be easy to have engineering disasters when the saline soil is used in roadbed,such as the frost boil,the expansion of saline soil,the dissolve falling,the roadbed soil pickled and so on.Aiming at analyzing the saline soil characteristics and the improving mechanism,the treated method is brought forward.The results of study indicate that adding the improving stabilizer into saline soil can improve the CBR property greatly and can meliorate the stability of sucking water clearly,make the soil melioration,finally,gain the solution of the problem of the disasters in roadbed.