文献类型：期刊文献

英文题名：Triaxial Mechanical Characteristics and Microscopic Mechanism of Graphene-Modified Cement Stabilized Expansive Soil

作者：Zhang, Chen[1];Wang, Wei[2];Zhu, Zhi-Duo[1];Li, Na[2];Pu, Shao-Yun[1];Wan, Yu[1];Huo, Wang-Wen[1]

机构：[1]Southeast Univ, Sch Transportat, Nanjing 211189, Peoples R China;[2]Shaoxing Univ, Sch Civil Engn, Shaoxing 312000, Peoples R China

年份：0

外文期刊名：KSCE JOURNAL OF CIVIL ENGINEERING

收录：SCI-EXPANDED(收录号：WOS:000702797600003)、、WOS

基金：This research was funded by the National Natural Science Foundation of China (Grant numbers [41772311, 42072297]), the Research Fund of Zhejiang Provincial Department of Housing and Urban-Rural Development [2017K179, 2016K130] and the Science and Technology Project of Jiangsu Provincial of Traffic Engineering Construction Bureau.

语种：英文

外文关键词：Cement stabilized expansive soil; Graphene; Triaxial unconsolidated and; undrained test; Failure angle; Microscopic mechanism

外文摘要：To investigate the effect of graphene (G) on the triaxial mechanical characteristics of cement stabilized soil, a triaxial unconsolidated and undrained (UU) test was conducted on cement stabilized expansive soil (CES) and graphene-modified cement stabilized expansive soil (GCES) with 0.05%, 0.1%, 0.15%, and 0.2%G content, respectively. The experimental results showed that compared with CES, the deviatoric stress-strain curve of GCES showed a more obvious softening characteristic. The addition of G had a good modification effect on the triaxial mechanical characteristics of CES, and with the increase of the content of G, the compressive strength and shear strength of CES increased first and then decreased, and reached the best value when the G content was 0.1%. The failure angle predicted by the Mohr-Coulomb failure angle formula had a good correlation with the measured failure angle of soil specimens, so it could provide help for the prediction of soil failure surface in practical engineering. Besides, the scanning electron microscope (SEM) analysis indicated that the internal structure of CES was improved due to G addition.