路基施工过程中填土含水率变化规律研究  

Study on Variety of Water Content in the Embankment of Expressway During Construction

作　　者：王保田[1] 王永安[2] 陈贵奇[2] 

机构地区：[1]河海大学岩土工程研究所,江苏南京210098 [2]江苏省高速公路建设指挥部,江苏南京210004

出　　处：《现代交通技术》2007年第2期1-3,10,共4页Modern Transportation Technology

摘　　要：结合宁淮高速公路施工工程,对施工期间和运行初期膨胀土填土的含水率的变化率进行了测试,认为弱膨胀土不能直接用作高速公路的路堤填土。现场测试结果表明:即使采用将膨胀土置于路堤中下部并封闭的方式,在施工期间路堤填土中的含水率仍会发生明显变化。The weak expansive soil could not be used as the filling material directly according to the field investigation and the measurement of the water content of the pavement during the construction of the Ninghuai expressway embankment.The result certificates that the compacted expansive soil has heavy negative effect to the engineering when it is directly used as the filling material of the expressway embankment although it is enclosed in the embankment.

关 键 词：公路工程 路基 膨胀土 含水率 胀缩变形 

分 类 号：U416.111[交通运输工程—道路与铁道工程]