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膨胀土作为一种区域性特殊土,它含有大量的亲水矿物,在湿度变化时发生较大体积变化,当其变形受到约束时可产生较大的内应力,土的不良工程性质会对路基和边坡造成严重破坏,目前国内外对膨胀上作过很多处治方法的研究,文章采用土质改良法,即向膨胀土中掺入不同比例的非膨胀土,并对混掺后的改良土进行了一系列的室内试验研究,得到不同配合比改良土的物理、力学指标,通过对其数据的比较与分析,找到符合工程技术要求且经济的改良方案和掺量。
As a kind of regional special soil, expansive soil contains a large amount of hydrophilic minerals, which undergo large volume changes when the humidity changes. When the deformation is restrained, the expansive soil can produce large internal stress. The bad engineering properties of soil will affect the roadbed And the slope caused serious damage, at home and abroad on the swelling made a lot of treatment methods, the article uses soil improvement method, that is, to the expansive soil mixed with different proportions of non-expansive soil, and mixed soil after the modified A series of laboratory experiments were conducted to obtain the physical and mechanical indexes of soil with different proportions. Through the comparison and analysis of the data, the improved schemes and dosages that meet the engineering requirements were found.