含盐量对石灰固化滨海盐渍土力学强度影响试验研究  

Experimental research on effect of salt content on strength of solidified saline soil in inshore with lime

作　　者：柴寿喜[1] 杨宝珠[1] 王晓燕[2] 王沛[1] 仲晓梅[1] 魏丽[1] 

机构地区：[1]天津城市建设学院土木工程系 [2]中水北方勘测设计研究有限公司勘察院,天津300222

出　　处：《岩土力学》2008年第7期1769-1772,1777,共5页Rock and Soil Mechanics

基　　金：国家自然科学基金(40772166);天津市自然科学基金(05YFSYSF00300、07JCYBJC12900);天津市高等学校科技发展基金(20051404);建设部研究开发项目(06-K1-5);天津市建委科学技术发展计划(2007-43)

摘　　要：随含盐量的增加,滨海盐渍土中的盐分结晶形成了许多晶体颗粒,改变了土的颗粒级配和微结构形式,使土的力学强度发生变化。无侧限抗压试验和三轴压缩试验结果表明,随含盐量的增加,石灰固化土的无侧限抗压强度和抗剪强度降低;随养护龄期的增加,石灰固化土的无侧限抗压强度和抗剪强度增加;随含盐量的增加,固化土试样浸水和不浸水无侧限抗压强度之间的差值越来越小。工程应用滨海盐渍土时需控制土的含盐量。With the increasing of salt content of saline soil in inshore, salt crystals particles are formed in soil, which causing the microstructure and strength of solidified soil change obviously. According to results of unconfined compression test and triaxial shear test, unconfined compression strength and shear strength of the solidified lime-soil decreases with more salt content and increases with more curing period. Meanwhile, the difference of unconfined compression strength of solidified lime-soil in water and in air decreases gradually with more salt content. Therefore salt content of soil shall be limited in the stage of engineering construction.

关 键 词：滨海盐渍土 含盐量 无侧限抗压强度 抗剪强度 石灰土 

分 类 号：TU448[建筑科学—岩土工程]