Effects of leachate concentration on the integrity of solidified clay liners
文献类型：期刊论文
| 作者 | Xue, Qiang ; Zhang, Qian
|
| 刊名 | WASTE MANAGEMENT & RESEARCH
 |
| 出版日期 | 2014 |
| 卷号 | 32期号:3页码:198-206 |
| 关键词 | landfill leachate pore structure unconfined compressive strength solidified clay Dynamic degradation |
| ISSN号 | 0734-242X |
| DOI | 10.1177/0734242X14521679 |
| 英文摘要 | This study aimed to evaluate the impact of landfill leachate concentration on the degradation behaviour of solidified clay liners and to propose a viable mechanism for the observed degradation. The results indicated that the unconfined compressive strength of the solidified clay decreased significantly, while the hydraulic conductivity increased with the leachate concentration. The large pore proportion in the solidified clay increased and the sum of medium and micro pore proportions decreased, demonstrating that the effect on the solidified clay was evident after the degradation caused by exposure to landfill leachate. The unconfined compressive strength of the solidified clay decreased with increasing leachate concentration as the leachate changed the compact structure of the solidified clay, which are prone to deformation and fracture. The hydraulic conductivity and the large pore proportion of the solidified clay increased with the increase in leachate concentration. In contrast, the sum of medium and micro pore proportions showed an opposite trend in relation to leachate concentration, because the leachate gradually caused the medium and micro pores to form larger pores. Notably, higher leachate concentrations resulted in a much more distinctive variation in pore proportions. The hydraulic conductivity of the solidified clay was closely related to the size, distribution, and connection of pores. The proportion of the large pores showed a positive correlation with the increase of hydraulic conductivity, while the sum of the proportions of medium and micro pores showed a negative correlation. |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000332447400004 |
| 出版者 | SAGE PUBLICATIONS LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3578]  |
| 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 | Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn |
| 推荐引用方式 GB/T 7714 | Xue, Qiang,Zhang, Qian. Effects of leachate concentration on the integrity of solidified clay liners[J]. WASTE MANAGEMENT & RESEARCH,2014,32(3):198-206. |
| APA | Xue, Qiang,&Zhang, Qian.(2014).Effects of leachate concentration on the integrity of solidified clay liners.WASTE MANAGEMENT & RESEARCH,32(3),198-206. |
| MLA | Xue, Qiang,et al."Effects of leachate concentration on the integrity of solidified clay liners".WASTE MANAGEMENT & RESEARCH 32.3(2014):198-206. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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