渠道边坡水泥改性土换填施工中若干问题探讨  

Discussion on Some Problems in Cement-Modified Soil Filling Construction of Channel Slope

作　　者：宋玉才[1] 焦家训[1] 张玉莉[1] 童耀 赵二平[2] 王乐华[2] 

机构地区：[1]中国葛洲坝集团公司基础工程有限公司,湖北宜昌443002 [2]三峡大学土木与建筑学院,湖北宜昌443002

出　　处：《三峡大学学报（自然科学版）》2015年第2期44-46,共3页Journal of China Three Gorges University：Natural Sciences

基　　金：国家自然科学基金(51109120);宜昌市2013年研究与开发计划自然基础科学研究与应用专项(AB-302A-08);三峡大学人才启动基金(KJ2012B041)

摘　　要：针对南水北调工程中渠道边坡水泥改性土换填施工过程中遇到的问题,进行了水泥改性土快速含水率测定方法以及水泥改性土标准干密度的试验方法研究.提出了采用微波炉法进行水泥改性土快速含水率测定,解决了现场需要及时提供水泥改性土含水率数据以指导施工的难题.提出采用"轻型击实"或"重型击实为模拟现场施工条件,水泥改性土的击实试验应在加水搅拌后延时4h进行",得出的最大干密度作为标准来控制水泥改性土现场碾压施工.该成果可以为类似工程提供参考.In order to solve the problems encountered in the filling construction of channel slope in the Southto-North Water Transfer Project,the way of determining water content quickly and testing the standard dry density of cement-modified soil were studied.It provided the way to use microwave to determine the water content quickly which could solve the problem of providing the water content timely to guide the construction.In addition,it provide the method of determining the standard dry density which was used to guide the field rolling construction by using light compaction or heavy compaction for the simulation of the construction site conditions;cement-modified soil compaction test should be done 4hours after mixing.The research results can provide reference for similar project and has wide application.

关 键 词：水泥改性土 换填施工 标准干密度 碾压 

分 类 号：TU411[建筑科学—岩土工程]