{"title":"Experimental Investigation of Volume Change and Hydraulic Conductivity on Geosynthetic Clay Liner","authors":"Guangkeng Zhang, Hh Zhang, Jinwen Liu, Lan-hua Zhou, Mingjiang Yan, Jinfang Wang","doi":"10.1007/978-981-13-2224-2_89","DOIUrl":"https://doi.org/10.1007/978-981-13-2224-2_89","url":null,"abstract":"","PeriodicalId":20690,"journal":{"name":"Proceedings of the 8th International Congress on Environmental Geotechnics Volume 2","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74212880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-10-11DOI: 10.1007/978-981-13-2224-2_4
L. Zhan, J. Lan, Wei Li, Yun-min Chen
{"title":"Slope Stabilization and Capacity Expansion at Tianziling Landfill in Hangzhou, China","authors":"L. Zhan, J. Lan, Wei Li, Yun-min Chen","doi":"10.1007/978-981-13-2224-2_4","DOIUrl":"https://doi.org/10.1007/978-981-13-2224-2_4","url":null,"abstract":"","PeriodicalId":20690,"journal":{"name":"Proceedings of the 8th International Congress on Environmental Geotechnics Volume 2","volume":"66 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81465155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-08-08DOI: 10.1061/9780784480144.043
Hulya Salihoglu, Jiannan Chen, W. Likos, C. Benson
Experiments were conducted to evaluate the compatibility of bentonite-polymer (B-P) GCLs to Coal Combustion Product (CCP) leachates. The B-P GCLs were manufactured by dry-mixing polymer and sodium bentonite (NaB). Six synthetic leachates were selected based on database of coal ash leachates. Hydration characteristics (i.e., free swell index) and hydraulic conductivity of B-P GCLs were investigated using deionized water and synthetic leachates. The hydraulic conductivity of B-P GCL with low polymer loading (1.2%) is strongly affected by the ionic strength of leachates and controlled by swelling of bentonite. However, the hydraulic conductivity of B-P GCL with high polymer loading (≥5.1%) is controlled primarily by hydrogel blockage in the pore space. Polymer hydrogel forms reticular structure and bonds free water when hydrated with DI water. However, under 20 mM CaCl2, the reticular structure of polymer hydrogel is inhibited by self-entanglement due to divalent cations and high ionic strength.
通过实验研究了膨润土聚合物(B-P)与煤燃烧产物(CCP)渗滤液的相容性。采用干混聚合物和钠基膨润土(NaB)制备了B-P型gcl。在煤灰渗滤液数据库的基础上，选择了6种合成渗滤液。用去离子水和合成渗滤液研究了B-P gcl的水化特性(即自由膨胀指数)和水力电导率。低聚合物负载(1.2%)的B-P GCL的导电性受渗滤液离子强度的强烈影响，受膨润土溶胀的控制。然而，高聚合物负载(≥5.1%)的B-P GCL的水导率主要受孔隙中水凝胶堵塞的控制。聚合物水凝胶与去离子水水合后形成网状结构，与游离水结合。然而，在20 mM CaCl2下，由于二价阳离子和高离子强度，聚合物水凝胶的网状结构受到自纠缠的抑制。
{"title":"Hydraulic Conductivity of Bentonite-Polymer Geosynthetic Clay Liners to Coal Combustion Product Leachates","authors":"Hulya Salihoglu, Jiannan Chen, W. Likos, C. Benson","doi":"10.1061/9780784480144.043","DOIUrl":"https://doi.org/10.1061/9780784480144.043","url":null,"abstract":"Experiments were conducted to evaluate the compatibility of bentonite-polymer (B-P) GCLs to Coal Combustion Product (CCP) leachates. The B-P GCLs were manufactured by dry-mixing polymer and sodium bentonite (NaB). Six synthetic leachates were selected based on database of coal ash leachates. Hydration characteristics (i.e., free swell index) and hydraulic conductivity of B-P GCLs were investigated using deionized water and synthetic leachates. The hydraulic conductivity of B-P GCL with low polymer loading (1.2%) is strongly affected by the ionic strength of leachates and controlled by swelling of bentonite. However, the hydraulic conductivity of B-P GCL with high polymer loading (≥5.1%) is controlled primarily by hydrogel blockage in the pore space. Polymer hydrogel forms reticular structure and bonds free water when hydrated with DI water. However, under 20 mM CaCl2, the reticular structure of polymer hydrogel is inhibited by self-entanglement due to divalent cations and high ionic strength.","PeriodicalId":20690,"journal":{"name":"Proceedings of the 8th International Congress on Environmental Geotechnics Volume 2","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81515154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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