| 水泥-膨润土泥浆配比对防渗墙渗透性能的影响 |
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| 引用本文： | 徐超,黄亮,邢皓枫.水泥-膨润土泥浆配比对防渗墙渗透性能的影响[J].岩土力学,2010,31(2):422-426. |
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| 作者姓名： | 徐超 黄亮 邢皓枫 |
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| 作者单位： | 1.同济大学 岩土及地下工程教育部重点实验室，上海 200092；2.同济大学 地下建筑与工程系，上海 200092；3.上海市基础工程公司，上海 200002 |
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| 基金项目： | 上海市重点学科建设项目资助 |
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| 摘 要： | 作为一种垂直防渗墙体材料，水泥-膨润土泥浆已在欧美等一些国家被广泛应用于垃圾填埋场的垂直防渗系统中，而国内对此类墙体材料的研究和应用较少。通过对不同配合比的水泥-膨润土泥浆固结体进行渗透试验，研究了原材料对泥浆固结体渗透性能的影响以及渗透性随龄期变化的情况。试验结果表明，水泥和膨润土对固结体渗透系数的影响相互依赖，只有在水泥用量达到一定程度后，增加膨润土用量才能有效地降低固结体的渗透性能；随着龄期的增加，水泥-膨润土泥浆固结体的渗透系数明显降低。
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| 关 键 词： | 水泥-膨润土泥浆 渗透试验 防渗墙 |
| 收稿时间： | 2008-08-21 |
Influence of cement-bentonite slurry mixing ratio on permeability of cutoff wall |
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| XU Chao,HUANG Liang,XING Hao-feng.Influence of cement-bentonite slurry mixing ratio on permeability of cutoff wall[J].Rock and Soil Mechanics,2010,31(2):422-426. |
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| Authors: | XU Chao HUANG Liang XING Hao-feng |
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| Institution: | 1. Key laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China; 2. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 3. Shanghai Foundation Engineering Co., Shanghai 200002, China |
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| Abstract: | As a kind of material for cutoff walls, cement-bentonite slurry was widely used in vertical anti-seepage system of landfills in the US and some European countries. The application and research of cement-bentonite slurry haven’t been well developed in China. Several different mixing ratios of slurry were prepared for study. The hydraulic conductivities of hardened slurry were tested using a permeameter. The influences of cement and betonite on the hydraulic conductivity of hardened slurry were explored. The results show that the influences of cement and bentonite on hydraulic conductivity of hardened slurry are interdependent. Only the participated amount of cement should reach a certain degree, the increase of bentonite used in the slurry can effectively decrease the permeability of hardened slurry. The hydraulic conductivities of hardened slurry also decrease evidently with curing time. |
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| Keywords: | cement-bentonite slurry permeability test cutoff wall |
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