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首页> 外文期刊>The international journal of pavement engineering >Determination of CBR for fine-grained soils using a dynamic lightweight cone penetrometer
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Determination of CBR for fine-grained soils using a dynamic lightweight cone penetrometer

机译：使用动态轻质锥形渗透仪测定细粒土壤的CBR

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摘要

Determination of California bearing ratio (CBR) values indirectly from a relationship with the dynamic cone penetrometer (DCP) can offer a valuable alternative approach due to its simplicity and the ability to provide rapid results. The literature review reveals that DCP is mainly used as an in situ device and laboratory application of DCP, in a mould, was rarely reported, due to the confining effect. In this study, a lightweight cone penetrometer (DLP), with a hammer mass of 2.25 kg that can be used in a CBR mould in the laboratory as well as in the field was used to evaluate the CBR of fine-grained subgrade soils. Strong relationships were found between the CBR values and the dynamic lightweight cone penetration index (DLPI) for eight experimental soils, at four different moisture contents. The results show that CBR values drop and DLPI values increase very significantly when moisture contents increase from optimum to soaked conditions.
机译：通过与动态圆锥硬度计（DCP）的关系间接确定加利福尼亚承载比（CBR）值可以提供一种有价值的替代方法，因为它具有简单性并能够提供快速结果。文献综述表明，DCP主要用作原位装置，由于局限作用，很少有人在模具中对DCP进行实验室应用。在这项研究中，锤形质量为2.25 kg的轻质锥形透度计（DLP）可用于实验室以及现场的CBR模具中，用于评估细粒路基土壤的CBR。在四种含水量不同的情况下，对于八种试验土壤，CBR值与动态轻质圆锥渗透指数（DLPI）之间发现密切的关系。结果表明，当水分含量从最佳状态增加到浸泡状态时，CBR值下降，DLPI值显着增加。

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