水泥复合土的压缩模量试验  

Experiment on compression modulus of cement mixed soil

作　　者：陈四利[1] 魏星[1] 董凯赫 史建军[1] 宁宝宽[1] 孟晋[1] 黄杰[1] 

机构地区：[1]沈阳工业大学建筑与土木工程学院,沈阳110870

出　　处：《沈阳工业大学学报》2015年第5期577-581,共5页Journal of Shenyang University of Technology

基　　金：国家自然科学基金资助项目(51279109);辽宁省教育厅基金资助项目(201364088)

摘　　要：为了改善水泥复合土的力学特性,在水泥复合土形成时添加了膨润土和粉煤灰,设计了水泥复合土的配合比;采取正交试验方法,进行了水泥复合土的压缩模量试验;利用极差分析和方差分析的方法研究了水泥掺量、膨润土掺量和粉煤灰掺量对水泥复合土压缩模量的影响.结果表明:随着水泥掺量的增加,水泥复合土的压缩模量逐步增大,而随着膨润土掺量和粉煤灰掺量的增加,水泥复合土的压缩模量均逐渐降低.水泥掺量对水泥复合土压缩模量的影响最大,膨润土掺量的影响次之,粉煤灰掺量的影响偏小.In order to improve the mechanical properties of cement mixed soil, both bentonite and fly ash were added during the formation of cement mixed soil, and the mixing proportion of cement mixed soil was designed. The compression modulus tests were carried out with the orthogonal test, and the influence of cement content, bentonite content and fly ash content on the compression modulus of cement mixed soil was studied with both range analysis and variance analysis methods. The results show that with increasing the cement content, the compression modulus of cement mixed soil gradually increases, while the compression modulus gradually decreases with increasing the bentonite content and fly ash content. The cement content exhibits the most significant influence on the compression modulus of cement mixed soil, the influence of bentonite content is followed, and the influence of cement fly ash content has less influence on the compression modulus.

关 键 词：水泥复合土 压缩模量 水泥掺量 膨润土掺量 粉煤灰掺量 正交试验 压缩试验 回归模型 

分 类 号：TU411[建筑科学—岩土工程]