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含水量对土石混合介质剪切波传播速度的影响分析

, PP. 16-20

Keywords: 道路工程,土石混合介质,室内试验,剪切波速,含水量

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Abstract:

采用室内重型击实试验的方法,分别对低液限粘土、粉质粘土、砂土的纯土试件和土石混合试件进行了不同含水量、不同含石量情况下的剪切波速对比试验。研究了纯土试件在密度一定的条件下试件剪切波速随含水率的变化规律,同时分析了纯土试件含水量对剪切波速影响的机理。大量试验结果表明,土体的含水量与土石混合介质的剪切波速存在显著的相关性,即剪切波速随含水量的增加而减少,同时在土石混合料中这种相关性随着含石量的增大而逐步减弱。研究结果将为土石混合料压实质量剪切波速测试分析技术提供理论依据。

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