基于压汞实验的粘土微孔隙分布特征研究  

Study on distribution of clay void based on mercury penetration test

作　　者：唐华瑞[1] 韩灵杰[2] 王杏杏[3] 高凌霞 

机构地区：[1]河南理工大学万方科技学院,河南郑州450000 [2]郑州科技学院,河南郑州450000 [3]天津城建大学土木工程学院,天津300384 [4]大连民族大学土木建筑工程学院,辽宁大连116600

出　　处：《广西大学学报（自然科学版）》2016年第1期228-233,共6页Journal of Guangxi University（Natural Science Edition）

基　　金：国家自然科学基金资助项目(51178290);中央高校基本科研业务费专项资金资助项目(201502040402)

摘　　要：为了研究粘土微观结构特征与其力学形成条件的关系,对某粘土进行了重塑和一维再固结。在此基础上,采用切块法获得了微结构观察样品,并采用冷冻干燥方法对微结构样品进行了干燥,进而采用能谱分析方法确定了土样的化学矿物成分,采用压汞实验测试了粘土的孔径分布。对不同方向上的孔径分布特征与其形成过程之间的关系进行了分析,结果表明孔径分布特征与试样的方向性具有密切关系。研究成果有助于进一步揭示土微结构与其力学性质之间的内在联系。In order to study the relationship between the microstructure of clay and its mechanical properties,some clay taken from a stratum has been remodeled and one-dimensionally reconsolidated. On the basis,microstructure observation samples were obtained by the one-dimensional consolidation,and the freeze-drying method was applied to dry the samples. Then the method of energy spectrum analysis was used to determine the chemical composition of the soil samples,and the pore size distribution of clay was tested by a mercury penetration experiment. Analysis on the relationship between the pore distribution in different directions and its formation process shows that the pore distribution is closely related to the direction of the samples. The research can further reveal the relationship between microstructure of clay and its mechanical properties.

关 键 词：粘土 微结构 压汞实验 能谱分析 

分 类 号：TU411.92[建筑科学—岩土工程]