当前位置: X-MOL 学术Transp. Geotech. › 论文详情
Compression and wetting induced volumetric behavior of loess: Macro- and micro-investigations
Transportation Geotechnics ( IF 2.436 ) Pub Date : 2020-03-12 , DOI: 10.1016/j.trgeo.2020.100345
Q.Y. Mu; C. Zhou; C.W.W. Ng

Volumetric behavior of intact and compacted loess under isotropic compression and wetting was investigated through stress- and suction-controlled triaxial tests. To assist in the interpretation of test results, X-ray diffraction (XRD), Scanning Electron Microscope (SEM) and Mercury Intrusion Porosimeter (MIP) tests were carried out to determine the mineral composition and the microstructure of the tested loess. Results of compression tests showed that yield stresses of intact loess were larger than that of the compacted loess because of stabilization effects contributed by clay particles and calcite in intact loess, as evidenced by SEM and XRD results. On the other hand, constant water content was observed for intact loess during compression at suctions 50 kPa and 100 kPa, while the water content of compacted loess increased by 4.4% and 7.4% respectively. MIP tests revealed that compression of the intact loess mainly occurred in the extra-large pores, but with minuscule effects on the pores governing water distribution at suctions 50 kPa and 100 kPa. For compacted loess, a number of inter-aggregate pores were compressed below the pore diameters responsible for water flowing in the pores at the applied suctions. In addition, intact loess showed wetting induced swelling at an isotropic stress of 50 kPa, while collapse was observed for compacted loess with the same stress path.
更新日期:2020-03-27

 

全部期刊列表>>
AI核心技术
10years
材料学研究精选
Springer Nature Live 产业与创新线上学术论坛
胸腔和胸部成像专题
自然科研论文编辑服务
ACS ES&T Engineering
ACS ES&T Water
屿渡论文,编辑服务
杨超勇
周一歌
华东师范大学
段炼
清华大学
廖矿标
李远
跟Nature、Science文章学绘图
隐藏1h前已浏览文章
中洪博元
课题组网站
新版X-MOL期刊搜索和高级搜索功能介绍
ACS材料视界
x-mol收录
福州大学
南京大学
王杰
左智伟
电子显微学
何凤
洛杉矶分校
吴杰
赵延川
试剂库存
天合科研
down
wechat
bug