山西黄土CBR的影响分析

在山西省选取5种典型黄土,采用室内试验方法,制备不同击实次数,不同含水量的试件用于CBR值的测定,分析含水量和压实度对黄土填料CBR值的影响,并建立了CBR与含水量的相关关系式。试验结果表明：含水量对CBR值的影响程度最大,在最佳含水量,最大压实度条件下的CBR值最大,含水量越大,击实次数对CBR值的提高效果甚微。随着击实次数的增大,浸水 CBR和不浸水CBR与含水量的相关关系都呈现一定的规律性。

Analysis on CBR Factor of Shanxi Loess

Selecting five typical loess in Shanxi Province, this paper adopts the indoor test methods to prepare the specimens of different compactness and different moisture content which are used to test CBR value, analyze the impact of compactness and moisture content on the CBR value and establish the relationship of CBR and moisture content.The result shows than the level of moisture content has great impact on CBR value;the CBR value is maximum under optimum moisture content and maximum degree of compaction conditions; the number of times of compaction has little effect on the improvement of CBR with increasing water content.The relationship between soaked CBR or non soaked CBR and the moisture content shows a certain regularity.