关于非饱和膨胀土水体积变化系数计算的思考  

Calculation of variation coefficient of water volume for unsaturated expansive soils

作　　者：翟聚云[1] 王宏艳[1] 

机构地区：[1]平顶山工学院,河南平顶山467000

出　　处：《平顶山工学院学报》2008年第6期7-9,13,共4页Journal of Pingdingshan Institute of Technology

基　　金：河南省科技发展项目(项目编号:624250023)

摘　　要：非饱和膨胀土地基水分运动及其病害非常常见,水体积变化系数是计算非饱和土体水分迁移的重要参数,含水量和干密度是影响水体积变化系数的重要因素。在以往的研究中,对非饱和膨胀土的讨论非常少见。本文对水体积变化系数的计算过程和结果进行分析,得到了土体水体积变化系数随含水量、基质吸力和干密度变化的规律,并从微观结构变化的角度加以探讨,深入了对非饱和膨胀土的工程性质的认识。Moisture migration and disease are common in unsaturated expansive soils. Variation coefficient of water volume is very important in calculation of unsaturated soils. Water content and dry density are important factors affecting variation coefficient of water volume. The discussion of unsaturated expansive soils is rare before. This study analyzes the calculation process and results of variation coefficient of water volume. The changes of variation coefficient of water volume with water content, metric suction and dry density are obtained. The author discusses in view of microstructure changes. And then, the project characters of unsaturated expansive soils are further understood.

关 键 词：膨胀土 水体积变化系数 含水量 干密度 

分 类 号：TU441.3[建筑科学—岩土工程]