长江科学院院报2019，Vol.36Issue(4)：135-139,5.DOI:10.11988/ckyyb.20180910
纳米MgO改性滨海水泥土的直剪试验及微观机理
Mechanical and Micro-structural Characteristics of Coastal Cement Soil Modified by Nano-MgO
摘要
Abstract
To investigate the effect of nano-MgO on cement-treated seashore soil, mechanical test and microscopic test were conducted on nano-MgO modified cement-treated seashore soil ( NmCS) . The mechanical performances of NmCS samples with varied cement content and nano-MgO content were examined via indoor direct shear test. Fur-thermore, the micro-structural characteristics and mechanism were studied by using SEM technology. Test result un-veiled that: (1) there exists an optimum content of nano-MgO for NmCS. Specifically in the test of the present re-search, the optimum content of nano-MgO is 10‰. (2) Cement-treated seashore soil in the absence of nano-MgO is dominated by loose-structure and small particles; while NmCS with 10‰nano-MgO is the most compact, reflected as in the improvement of mechanical strength.关键词
滨海水泥土/纳米MgO/抗剪强度/扫描电镜/微观结构/掺入比Key words
coastal cement soil/ nano-MgO/ shear strength/ SEM/ micro-structure/ mix ratio分类
建筑与水利引用本文复制引用
张陈,李娜,王伟,袁俊平,姜屏,吴王意,傅克贤..纳米MgO改性滨海水泥土的直剪试验及微观机理[J].长江科学院院报,2019,36(4):135-139,5.基金项目
国家自然科学基金项目(41772311) （41772311）
浙江省自然科学基金项目(LY17E080016) （LY17E080016）
浙江省建设科研项目(2017K179,2016K130) （2017K179,2016K130）
