引江济汉工程混合膨胀土水泥改性试验研究

摘要

引江济汉工程位于江汉盆地西缘，引水线路中段广泛分布膨胀土，膨胀土渠坡的处理措施是采用非膨胀土进行换填，渠线附近缺乏非膨胀土料源，对边坡开挖的混合膨胀土水泥改性进行试验研究，尽管混合土膨胀潜势混杂，水泥能有效降低土体的膨胀性，但是水泥的改性效果受搅拌均匀度和土块破碎程度影响大，搅拌得越均匀，颗粒破碎程度越高，水泥改性效果越好。为工程所需水泥改性土的生产提供依据和指导。%Diversion projects from Yangtze River to Hanjiang River is located in the western margin of the Jianghan Ba-sin,in the middle of water diversion line is extensively distributed expansive soil .Treatment measures of expansive canal slope is the non expansive soil replacement .In this paper ,the mixed expansive soil cement modification of slope excava-tion is studied ,and the main factors affecting the modification effect are compared and analyzed ,which provided the basis and guidance for the production of cement modified soil .