黏粒对桂林红黏土物理力学性质的影响  

Effect of Clay Content on the Physical and Mechanical Properties of Guilin Red Clay

作　　者：王良玉 李蜀江 杨柏 刘宝臣 WANG Liangyu;LI Shujiang;YANG Bai;LIU Baochen(China MCC5 Group Co.Ltd.,Chengdu 610000;College of Construction Engineering,Jilin University,Changchun 130026;School of Architecture and Transportation Engineering,Guilin University of Electronic Technology,Guilin 541004)

机构地区：[1]中国五冶集团有限公司,成都610000 [2]吉林大学建设工程学院,长春130026 [3]桂林电子科技大学建筑与交通工程学院,广西桂林541004

出　　处：《土工基础》2023年第6期1023-1026,共4页Soil Engineering and Foundation

基　　金：国家自然科学基金(42067044)。

摘　　要：黏粒在红黏土中含量很高,为了探究黏粒对红黏土物理力学性质的影响,以桂林红黏土为研究对象开展研究。试验用土黏粒含量为42.3%,利用净水沉降原理制取黏粒,向红黏土中掺入不同比例的黏粒并对其进行比重试验、含水比试验以及三轴剪切试验。结果表明,土粒比重随黏粒的增加先降低后增加,含水比随黏粒的增多逐渐递增,黏聚力随黏粒的增多逐级递增,内摩擦角随黏粒的增对逐级递减,对比重曲线和含水比曲线进行拟合,结果均接近幂函数形式。The clay content in red clay is very high.In order to explore the influence of clay content on the physical and mechanical properties of the red clay,the Guilin Red Clay samples are used as the research object.The tested clay content in the soil samples is 42.3%.The clay sample is prepared by using the principle of clean water sedimentation.Different clay contents are added to different Guiling Red Clay samples,and the specific gravity test,water content test and triaxial shear test are performed on these samples.The results show that,the specific gravity of soil particles first decreases and then increases with the increase of clay contents.The water content ratio gradually increases with the increase of clay contents and the cohesion increases step by step with the increase of clay contents.The internal friction angle decreases step by step with the increase of clay contents.The specific gravity curve and water content ratio curve are fitted,and the results are close to the form of power function.

关 键 词：岩土工程 红黏土 黏粒掺量 土粒比重 含水比 

分 类 号：TU411[建筑科学—岩土工程]