石灰水泥改良硫酸盐渍土盐胀特性研究  

Investigation on salt heaving effect of solidified saline soil treated by cement and lime

作　　者：连杰[1] 顾强康[1] 乔栋 姜乐[1] 梁磊[1] 

机构地区：[1]空军工程大学工程学院,陕西西安710038 [2]兰州军区空军勘察设计院,甘肃兰州730020

出　　处：《四川建筑科学研究》2012年第4期197-199,共3页Sichuan Building Science

摘　　要：硫酸盐渍土作为一种特殊土,具有溶陷、盐胀、腐蚀等不良的工程特性,硫酸盐渍土路基填料是制约交通建设快速发展的重大岩土工程问题之一。为了解决硫酸盐渍土工程应用难题,采用石灰、水泥混合改良材料对不同含盐量的硫酸盐渍土进行改性试验,测试了改良盐渍土在无载条件下的盐胀量,并运用正交分析法研究了石灰和水泥对盐渍土盐胀影响的显著性。结果表明:使用石灰、水泥混合改良材料对硫酸盐渍土进行改良,能有效处理弱硫酸盐渍土、中硫酸盐渍土、强硫酸盐渍土地基,对于过硫酸盐渍土,也能有效的减小其盐胀率。Saline soil is special and complicated, besides soil heaving, it has characters of collapsibility and corrosion, which does extremely harm to the road. In oeder to solute these questions, the author analyses salt heaving effect of sulphate treated saline soil with combined effect of cement and lime, through salt heaving test of sulphate treated saline soil and orthogonal test design,the best mix ratio and the influence significane of all mix materials are analyzed. The result show that： the mix use of cement and lime have a good effect on sulphate treated saline soil content sulfate less than 4% ,to sulphate treated saline soil content sulfate more than 4% ,the mix use of cement and lime also have a effect on decreasing salt heaving effect.

关 键 词：水泥 石灰 硫酸盐渍土 盐胀 

分 类 号：U416.1[交通运输工程—道路与铁道工程]