Impact of High Concentration Solutions on Hydraulic Properties of Geosynthetic Clay Liner Materials
文献类型：期刊论文
| 作者 | Xue, Qiang ; Zhang, Qian; Liu, Lei
|
| 刊名 | MATERIALS
 |
| 出版日期 | 2012 |
| 卷号 | 5期号:11页码:2326-2341 |
| 关键词 | geosynthetic clay liner materials high concentration chemical solutions chemical attack effect hydraulic conductivity hydration swelling |
| ISSN号 | 1996-1944 |
| DOI | 10.3390/ma5112326 |
| 英文摘要 | This study focuses on the impact of landfill high concentration solutions erosion on geosynthetic clay liner (GCL) materials permeability. The permeation tests on the GCL, submerged using different kinds of solutions with different concentrations, were carried out systematically by taking these chemical solutions as permeant liquids. Based on seasonal variations of ion concentrations in Chenjiachong landfill leachate (Wuhan Province), CaCl2, MgCl2, NaCl, and KCl were selected as chemical attack solutions to carry out experimental investigations under three concentrations (50 mM, 100 mM, 200 mM) and soak times (5, 10, and 20 days). The variation law of the GCL hydraulic conductivity under different operating conditions was analyzed. The relationship between GCL hydraulic conductivity, chemical solutions categories, concentrations, and soak times were further discussed. The GCL hydraulic conductivity, when soaked and permeated with high concentration chemical solutions, increases several times or exceeds two orders of magnitude, as compared with the permeation test under normal conditions that used water as the permeant liquid. This reveals that GCL is very susceptible to chemical attack. For four chemical solutions, the chemical attack effect on GCL hydraulic conductivity is CaCl2 > MgCl2 > KCl > NaCl. The impact of soak times on GCL hydraulic conductivity is the cooperative contribution of the liner chemical attack reaction and hydration swelling. A longer soak time results in a more advantageous hydration swelling effect. The chemical attack reaction restrains the hydration swelling of the GCL. Moreover, the GCL hydraulic conductivity exponentially decreases with the increased amplitude of thickness. |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000311426300017 |
| 出版者 | MDPI AG |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3399]  |
| 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 & Geotechn Engn |
| 推荐引用方式 GB/T 7714 | Xue, Qiang,Zhang, Qian,Liu, Lei. Impact of High Concentration Solutions on Hydraulic Properties of Geosynthetic Clay Liner Materials[J]. MATERIALS,2012,5(11):2326-2341. |
| APA | Xue, Qiang,Zhang, Qian,&Liu, Lei.(2012).Impact of High Concentration Solutions on Hydraulic Properties of Geosynthetic Clay Liner Materials.MATERIALS,5(11),2326-2341. |
| MLA | Xue, Qiang,et al."Impact of High Concentration Solutions on Hydraulic Properties of Geosynthetic Clay Liner Materials".MATERIALS 5.11(2012):2326-2341. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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