Influence of salt concentration on volume shrinkage and water retention characteristics of compacted GMZ bentonite
文献类型：期刊论文
| 作者 | Chen, Bao2; He, Yong2,4; Chen, Yong-Gui2,3,4; Ye, Wei-Min2; Cui, Yu-Jun1 |
| 刊名 | ENVIRONMENTAL EARTH SCIENCES
 |
| 出版日期 | 2016 |
| 卷号 | 75期号:6页码:- |
| 关键词 | GMZ bentonite Chemistry of pore water Volume shrinkage Water retention characteristics Geological repository |
| ISSN号 | 1866-6280 |
| DOI | 10.1007/s12665-015-5228-3 |
| 英文摘要 | The chemistry of pore water plays an important role on the hydraulic and mechanical properties of compacted bentonite used as buffer/backfill material in the repository of high-level radioactive waste (HLW). In this study, a series of compacted GMZ bentonite specimen with a dry density of 1.7 Mg/m(3) were prepared and initially saturated with NaCl solutions of different concentrations (0, 0.5, 1.0 and 1.5 mol/L), respectively. The drying process was brought forward on the specimens through increasing their suction by using vapor phase technique. During the drying process, the cracking behavior of the specimens was observed; the volume shrinkage and the water retention characteristics (WRCs) were investigated with the consideration of the chemistry. The results obtained show that the compacted specimen initially saturated with distilled water was observed with cracking when its suction increased to 82 MPa and others were found to crack off as their suctions increased to 139 MPa, while no cracks could be observed for the specimens below the suction of 82 MPa. For the confined specimens, volume shrinkage occurred with increase of the suction, accordingly changing their porosity; the void ratio of the specimens decreased as the suction of the soil increased and increased with the chemistry of the pore water. Meanwhile, the chemistry of the pore water has more significant impact on the WRCs of the specimens at a lower suction. |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000373127400027 |
| 出版者 | SPRINGER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3840]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.Ecole Ponts ParisTech, Lab Navier CERMES 2.Tongji Univ, Dept Geotech Engn, Minist Educ, Key Lab Geotech & Underground Engn, 1239 Siping Rd ; 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 4.Changsha Univ Sci & Technol, Sch Civil Engn & Architecture; |
| 推荐引用方式 GB/T 7714 | Chen, Bao,He, Yong,Chen, Yong-Gui,et al. Influence of salt concentration on volume shrinkage and water retention characteristics of compacted GMZ bentonite[J]. ENVIRONMENTAL EARTH SCIENCES,2016,75(6):-. |
| APA | Chen, Bao,He, Yong,Chen, Yong-Gui,Ye, Wei-Min,&Cui, Yu-Jun.(2016).Influence of salt concentration on volume shrinkage and water retention characteristics of compacted GMZ bentonite.ENVIRONMENTAL EARTH SCIENCES,75(6),-. |
| MLA | Chen, Bao,et al."Influence of salt concentration on volume shrinkage and water retention characteristics of compacted GMZ bentonite".ENVIRONMENTAL EARTH SCIENCES 75.6(2016):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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