干湿循环条件下红粘土的胀缩变形特性研究  

Study on the Swell & Shrinking Deformation Characteristics of Red Clay under the Condition of Dry-wet Circulation

作　　者：赵雄飞[1] 陈开圣[1] 

机构地区：[1]贵州大学土木工程学院,贵州贵阳550025

出　　处：《贵州大学学报（自然科学版）》2016年第1期132-135,共4页Journal of Guizhou University:Natural Sciences

基　　金：国家自然科学基金项目(51368010);贵州科技厅-贵州大学联合资金项目(黔科合LH字[2014]7663)

摘　　要：由于红粘土具有高含水率、高塑性、高孔隙比等特殊的工程性质,特别是路基表面失水收缩产生了开裂,使得路基产生了一些病害。论文以六盘水内环快线红黏土基填料为研究对象,对红粘土进行干湿循环,测量干湿循环过程中红粘土的胀缩变形和裂缝特性,揭示了干湿循环条件下红粘土胀缩变形和裂缝的演变规律。As red clay has special engineering properties such as high humidity, high plasticity;high void ratio,etc., the water loss to the surface of roadbed may cause some damages to the roadbed. The red clay roadbed filler of Liupanshui City＇ s Inner Ring Expressway was taken as the research object, dry-wet circulation was carried out to investigate the swell-shrinking deformation and cracking characteristics of red clay during the circulation process. The evolution rules of the swell-shrinking deformation and cracking were revealed.

关 键 词：干湿循环 红粘土 胀缩变形 裂缝特性 

分 类 号：U412.221[交通运输工程—道路与铁道工程]