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Experimental study of collapsiblity of gravel soil
Author(s): 
Pages: 2373-2377
Year: Issue:  8
Journal: Rock and Soil Mechanics

Keyword:  碎石土浸水载荷试验湿陷性湿陷机理;
Abstract: 采用不同工况的载荷试验、室内常规土工试验和易溶盐试验,分析了碎石土的荷载-沉降曲线特征,探讨了碎石土的湿陷性与湿陷机理.结果表明;碎石土在200 kPa稳定后浸水,再加荷到400 kPa,载荷试验荷载-沉降曲线呈折线型,明显分为三个阶段:压缩变形阶段,湿陷变形阶段,复合变形阶段.场地中4 m厚碎石土具有湿陷性,且湿陷性不均匀. 碎石土湿陷的机理在于其结构是疏松的单粒架空结构.骨架颗粒间存在架空孔隙...
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