石灰改性膨胀土施工最佳含水率确定方法探讨  

On determination of optimum water content of lime-treated expansive soil

作　　者：郭爱国[1] 孔令伟[1] 胡明鉴[1] 郭刚 王庆 

机构地区：[1]中国科学院岩土力学重点实验室,武汉430071 [2]湖北省襄十高速公路建设指挥部,湖北武当山442714

出　　处：《岩土力学》2007年第3期517-521,共5页Rock and Soil Mechanics

基　　金：国家重大基础研究前期研究专项项目(No.2003CCA02200);中国科学院武汉岩土力学研究所领域前沿基金项目(No.Q110301);湖北省交通厅资助项目

摘　　要：石灰改性土在公路工程建设中得到广泛应用,研究者也积累了较多经验,但施工控制参数中石灰土的含水率确定方法还值得商榷。就公路工程中石灰改性膨胀土的施工最佳含水率确定方法进行了探讨,提出了与目前公路部门相关试验规程和技术规范中确定石灰稳定土最佳含水率不同方法,认为石灰改性膨胀土的施工最佳含水率应以由击实试验确定的最佳含水率大3%左右为宜。Although lime-treated soil has been widely used in the road construction with many application experiences, the determination of the optimum water content in the parameters control of construction still needs to be deeply discussed. In this paper, the method to determine the optimum water content of lime-treated expansive soil in the road engineering is analyzed; and a new method, different from the corresponding testing standards and technical specifications for the ministry of communications, is presented; and it is illustrated that the optimum water content in the lime-treated soil should be 3% larger than the one determined by the compaction test.

关 键 词：膨胀土 石灰土 最佳含水率 

分 类 号：U416[交通运输工程—道路与铁道工程]