水泥改良黄土力学特性试验研究  

Experiment Study on Mechanical Properties of Cement Loess

作　　者：刘潇敏[1] 何小亮[1] 

机构地区：[1]西北大学地质学系/大陆动力学国家重点试验室,陕西西安710069

出　　处：《地下水》2011年第5期147-149,共3页Ground water

摘　　要：利用多种室内试验手段对重塑黄土和不同配合比（4%、5%、6%、7%）水泥改良黄土的物理力学性质进行了研究,试验结果表明：未经改良的黄土的力学性质不能满足高速铁路路基的设计要求,不能直接作为路基填料使用;水泥改良黄土的工程性质较重塑黄土有大幅度的提高;配合比达到5%及以上的水泥改良黄土的力学控制指标均能达到高速铁路对路基填料的要求;建议改良黄土路基填料的水泥配合比为5%~6%。The results of physical and mechanical experiments of the remolded loess with different cement maxture ratio（4%,5%,6%,7%） loess show that the common loess,as one of the ordinary filling materials,could not be used in sub-grade construction because of its poor engineering properties.Compared with the remolded loess,the engineering properties of the cement loess has been improved greatly,and all of the mechanical control indices of cement loess could meet the high requirements of railway sub-grade when the cement maxture ratio more than 5%.Therefore,the optimum cement maxture ratio is 5%~6%.

关 键 词：高速铁路 水泥改良黄土填料 强度特性 

分 类 号：P642.131[天文地球—工程地质学]