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INFLUENCE OF CaCl2 ON STRUCTURAL PROPERTY OF COLLAPSIBLE LOESS IN NINGXIA
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摘要: 针对宁夏黄土分布广泛，含盐量高，结构性强，黄土地基问题日益突出的情况，以干密度、含水率、含盐量为因素，设计L9(34)正交试验方案，应用三轴仪进行无侧限抗压强度试验，分析研究各因素对黄土结构性强度及结构性参数的影响规律。结果表明：黄土的结构性强度随干密度、含盐量的增大而增大，随含水率的增大而减小；无论含水率高低，易溶盐都是影响黄土结构性的重要因素之一。Abstract: For the loess widely distributed in Ningxia, high salt content, strong structure, and other problems of loess foundation are becoming outstanding day by day.Taking dry density, moisture content, salt content as factors, orthogonal test scheme L9(34) was designed, unconfined compressive strength test was done by triaxial apparatus, the impact law of factors in the structural strength and structural parameters of loess was studied.The results showed that the structural property of loess increased with the increase of dry density and salt content, and decreased with the increase of moisture content.No matter what moisture content was high or low, soluble salt was one of the important factors that influences structural property.
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Key words:
- loess /
- structural property /
- collapsible loess /
- soluble salt /
- dry density /
- moisture content /
- salt content
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