Preliminary Observation on Volumetric Behavior of Unsaturated Collapsible Loess
Preliminary Observation on Volumetric Behavior of Unsaturated Collapsible Loess
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DOI：
10.1061/40802(189)82
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发表时间：
2006-03
期刊：
影响因子：
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通讯作者：
R. Sharma;S. Singhal
中科院分区：
文献类型：
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作者：
R. Sharma;S. Singhal
湿陷性土壤在干燥条件下具有多孔结构、高孔隙率和相对较低的干容重。这些土壤主要由风吹淤泥组成。湿陷性土壤对水分敏感，主要是随着水分含量的增加，体积容易大幅减少。在本次调查中，一种常见的湿陷性土，即黄土，在实验室压实试件上进行了试验，以研究其体积变化特性。坍塌试验是使用常规固结仪进行的。研究发现，黄土的湿陷势与初始含水率、初始干容重和淹没应力(淹没时的垂直应力)有关。
Collapsible soils have porous structure, high void ratios, and relatively low dry unit weights in dry conditions. These soils consist mainly of wind-blown silt. Collapsible soils are moisture sensitive and susceptible to large reductions in volume primarily, with increase in moisture content. In this investigation, a commonly found collapsible soil, known as loess was tested on the laboratory compacted specimens to study its volume change behavior. The collapse tests were conducted using conventional oedometer. The collapse potential of loess was found to be dependent on the initial water content, initial dry unit weight and flooding stress (vertical stress at inundation).