Thermal Conductivity of Compacted GO-GMZ Bentonite Used as Buffer Material for a High-Level Radioactive Waste Repository

In China, Gaomiaozi (GMZ) bentonite serves as a feasible buffer material in the high-level radioactive waste (HLW) repository, while its thermal conductivity is seen as a crucial parameter for the safety running of the HLW disposal. Due to the tremendous amount of heat released by such waste, the th...

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Main Authors: Yong-Gui Chen, Xue-Min Liu, Xiang Mu, Wei-Min Ye, Yu-Jun Cui, Bao Chen, Dong-Bei Wu
Format: Article
Language:English
Published: Wiley 2018-01-01
Series:Advances in Civil Engineering
Online Access:http://dx.doi.org/10.1155/2018/9530813
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author Yong-Gui Chen
Xue-Min Liu
Xiang Mu
Wei-Min Ye
Yu-Jun Cui
Bao Chen
Dong-Bei Wu
author_facet Yong-Gui Chen
Xue-Min Liu
Xiang Mu
Wei-Min Ye
Yu-Jun Cui
Bao Chen
Dong-Bei Wu
author_sort Yong-Gui Chen
collection DOAJ
description In China, Gaomiaozi (GMZ) bentonite serves as a feasible buffer material in the high-level radioactive waste (HLW) repository, while its thermal conductivity is seen as a crucial parameter for the safety running of the HLW disposal. Due to the tremendous amount of heat released by such waste, the thermal conductivity of the buffer material is a crucial parameter for the safety running of the high-level radioactive waste disposal. For the purpose of improving its thermal conductivity, this research used the graphene oxide (GO) to modify the pure bentonite and then the nanocarbon-based bentonite (GO-GMZ) was obtained chemically. The thermal conductivity of this modified soil has been measured and investigated under various conditions in this study: the GO content, dry density, and water content. Researches confirm that the thermal conductivity of the modified bentonite is codetermined by the three conditions mentioned above, namely, the value of GO content, dry density, and water content. Besides, the study proposes an improved geometric mean model based on the special condition to predict the thermal conductivity of the compacted specimen; moreover, the calculated values are also compared with the experimental data.
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institution Kabale University
issn 1687-8086
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language English
publishDate 2018-01-01
publisher Wiley
record_format Article
series Advances in Civil Engineering
spelling doaj-art-6ebebc1d99d240f595395b8de275ad2b2025-02-03T06:06:46ZengWileyAdvances in Civil Engineering1687-80861687-80942018-01-01201810.1155/2018/95308139530813Thermal Conductivity of Compacted GO-GMZ Bentonite Used as Buffer Material for a High-Level Radioactive Waste RepositoryYong-Gui Chen0Xue-Min Liu1Xiang Mu2Wei-Min Ye3Yu-Jun Cui4Bao Chen5Dong-Bei Wu6Department of Geotechnical Engineering, Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, ChinaDepartment of Geotechnical Engineering, Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, ChinaDepartment of Geotechnical Engineering, Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, ChinaDepartment of Geotechnical Engineering, Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, ChinaLaboratoire Navier/CERMES, Ecole des Ponts-ParisTech, 6-8 Av. Blaise Pascal, Cité Descartes, 77455 Marne-la–Vallée, FranceDepartment of Geotechnical Engineering, Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, ChinaCollege of Chemistry and Chemical Engineering, Tongji University, Shanghai 200092, ChinaIn China, Gaomiaozi (GMZ) bentonite serves as a feasible buffer material in the high-level radioactive waste (HLW) repository, while its thermal conductivity is seen as a crucial parameter for the safety running of the HLW disposal. Due to the tremendous amount of heat released by such waste, the thermal conductivity of the buffer material is a crucial parameter for the safety running of the high-level radioactive waste disposal. For the purpose of improving its thermal conductivity, this research used the graphene oxide (GO) to modify the pure bentonite and then the nanocarbon-based bentonite (GO-GMZ) was obtained chemically. The thermal conductivity of this modified soil has been measured and investigated under various conditions in this study: the GO content, dry density, and water content. Researches confirm that the thermal conductivity of the modified bentonite is codetermined by the three conditions mentioned above, namely, the value of GO content, dry density, and water content. Besides, the study proposes an improved geometric mean model based on the special condition to predict the thermal conductivity of the compacted specimen; moreover, the calculated values are also compared with the experimental data.http://dx.doi.org/10.1155/2018/9530813
spellingShingle Yong-Gui Chen
Xue-Min Liu
Xiang Mu
Wei-Min Ye
Yu-Jun Cui
Bao Chen
Dong-Bei Wu
Thermal Conductivity of Compacted GO-GMZ Bentonite Used as Buffer Material for a High-Level Radioactive Waste Repository
Advances in Civil Engineering
title Thermal Conductivity of Compacted GO-GMZ Bentonite Used as Buffer Material for a High-Level Radioactive Waste Repository
title_full Thermal Conductivity of Compacted GO-GMZ Bentonite Used as Buffer Material for a High-Level Radioactive Waste Repository
title_fullStr Thermal Conductivity of Compacted GO-GMZ Bentonite Used as Buffer Material for a High-Level Radioactive Waste Repository
title_full_unstemmed Thermal Conductivity of Compacted GO-GMZ Bentonite Used as Buffer Material for a High-Level Radioactive Waste Repository
title_short Thermal Conductivity of Compacted GO-GMZ Bentonite Used as Buffer Material for a High-Level Radioactive Waste Repository
title_sort thermal conductivity of compacted go gmz bentonite used as buffer material for a high level radioactive waste repository
url http://dx.doi.org/10.1155/2018/9530813
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