z-logo
open-access-imgOpen Access
Thermal Conductivity of Compacted GO-GMZ Bentonite Used as Buffer Material for a High-Level Radioactive Waste Repository
Author(s) -
Yong-Gui Chen,
Xuemin Liu,
Xiang Mu,
Weimin Ye,
Yu-Jun Cui,
Chen Bao,
Dong Wu
Publication year - 2018
Publication title -
advances in civil engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.379
H-Index - 25
eISSN - 1687-8094
pISSN - 1687-8086
DOI - 10.1155/2018/9530813
Subject(s) - bentonite , thermal conductivity , radioactive waste , materials science , high level waste , buffer (optical fiber) , waste management , environmental science , composite material , geotechnical engineering , geology , computer science , telecommunications , engineering
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.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.
Having issues? You can contact us here