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采用室内重型击实试验的方法,分别对砂土、粉质黏土、低液限黏性土3种土样的纯土试件和土石混合试件进行了不同含水率、不同含石量情况下试件剪切波速对比试验。引入体积膨胀率γV,通过分析γV与细粒土剪切波速及关性模型。结果表明:石料间隙土剪切波速可由混合料宏观剪切波速推定。研究结果将为采用石料间隙土剪切波速评价混合料压实程度测试技术提供依据。
Using indoor heavy-duty compaction test method, three kinds of soil samples of sand soil, silty clay and low liquid limit cohesive soil were mixed with rock-soil samples respectively with different water content and different stone content Tests of shear wave velocity contrast test. The volume expansion rate γV was introduced, and the relationship between γV and shear wave velocity of fine soil was analyzed. The results show that the shear wave velocity of the intergranular soil can be estimated from the macroscopic shear wave velocity of the mixture. The results will provide the basis for evaluating the degree of compaction degree of the mixture by the shear wave velocity of the intergranular soil.