文献类型：期刊文献

英文题名：Effect of nano-MgO on mechanical performance of cement stabilized silty clay

作者：Yao, Kai[1];An, Dongliang[2];Wang, Wei[2];Li, Na[2];Zhang, Chen[2];Zhou, Aizhao[3]

机构：[1]Natl Univ Singapore, Dept Civil & Environm Engn, 1 Engn Dr 2, Singapore, Singapore;[2]Shaoxing Univ, Sch Civil Engn, Shaoxing, Zhejiang, Peoples R China;[3]Jiangsu Univ Sci & Technol, Dept Civil & Architecture Engn, Zhenjiang, Jiangsu, Peoples R China

年份：2020

卷号：38

期号：2

起止页码：250

外文期刊名：MARINE GEORESOURCES & GEOTECHNOLOGY

收录：SCI-EXPANDED(收录号：WOS:000510576600011)、、EI(收录号：20190606466654)、Scopus(收录号：2-s2.0-85060952415)、WOS

基金：This work is supported by the National Natural Science Foundation of China (grant number 41772311), Zhejiang Provincial Natural Science Foundation of China (grant number LY17E080016), and Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Science (grant number Z017013).

语种：英文

外文关键词：Cement; nano-MgO; shear strength; silty clay

外文摘要：A series of direct shear tests were performed on cement-admixed silty clay to investigate the effect of cement content and nano-magnesia (MgO) on its shear strength properties. For each normal stress, shear strength increased with cement content. However, an obvious increment in shear strength was achieved when the cement content was adjusted from 13% to 17%. Both cohesion and friction angle of cemented soil increased with cement content, and exponential function was adopted to correlate both the factors with cement content. For cement content of 10% investigated in this study, the optimum nano-MgO content was 10 parts per thousand, wherein the cohesion could reach the peak value. The microstructure of the mixture revealed that the structure of the mixture was compacted for the optimum nano-MgO content. However, micro-cracks were formed when the amount of nano-MgO exceeded its optimum content.