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Clay Phase Change of Gaomiaozi Bentonite in Simulated Cement Solutions
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Huyuan ZHANG1, 2, Xiaoya LI1, Yanmei TONG1, Hongliang YU1, Quan YI1
Journal of the Chinese Ceramic Society | 2023, 51(1) : 215 - 225
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Journal of the Chinese Ceramic Society | 2023, 51(1): 215-225
• Research Articles •
Clay Phase Change of Gaomiaozi Bentonite in Simulated Cement Solutions
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Huyuan ZHANG1, 2, Xiaoya LI1, Yanmei TONG1, Hongliang YU1, Quan YI1
Affiliations
  • 1.School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, China
  • 2.Key Laboratory of Mechanics on Disaster and Environment in Western China, The Ministry of Education, Lanzhou University, Lanzhou 730000, China

    • ZHANG Huyuan (1963-), male, Ph.D., Professor. E-mail:

About Author:

ZHANG Huyuan (1963-), male, Ph.D., Professor. E-mail:

Published: 2023-01-20 doi: 10.14062/j.issn.0454-5648.20220689
Outline
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Because of groundwater dissolution, the lining concrete of HLW geological repository release a "cement solution", and its chemical composition undergoes a four-stage evolution process. A young cement solution standing for Ⅰ-stage cement solution was mixed with Gaomiaozi (GMZ) bentonite powder, as suspensions to prompt static solid-liquid reaction in a batch style for evaluation of long-term chemical stability of the bentonite buffer material as used in China. During 256 d test, suspensions were harvested in different time intervals and separated into solid and liquid phases. The liquid phase were analyzed for pH, electrical conductivity and cation concentration. The solid phase was characterized by means of X-ray diffraction, Fourier transform infrared spectra and scanning electron microscope-energy spectrum. The analysis results of solid and liquid indicated both the dissolution of montmorillonite mineral and the formation of mixed layer illite-smectite occur in GMZ bentonite at the same time under the action of young cement solution. This tends to reduce the buffer performance of the GMZ bentonite.

high level waste disposal  /  buffer barrier  /  simulated cement solution  /  bentonite  /  montmorillonite
张虎元, 李小雅, 童艳梅, 于洪亮, 易泉. 高庙子膨润土在模拟水泥浸出液中的黏土矿物相变. 硅酸盐学报, 2023 , 51 (1) : 215 -225 . DOI: 10.14062/j.issn.0454-5648.20220689
Huyuan ZHANG, Xiaoya LI, Yanmei TONG, Hongliang YU, Quan YI. Clay Phase Change of Gaomiaozi Bentonite in Simulated Cement Solutions[J]. Journal of the Chinese Ceramic Society, 2023 , 51 (1) : 215 -225 . DOI: 10.14062/j.issn.0454-5648.20220689
Appendix
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Year 2023 volume 51 Issue 1
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Article Info
doi: 10.14062/j.issn.0454-5648.20220689
  • Receive Date：2022-08-24
  • Online Date：2026-10-20
  • Published：2023-01-20
Article Data
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History
  • Received：2022-08-24
  • Revised：2022-09-12
Funding
Affiliations
    1.School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, China
    2.Key Laboratory of Mechanics on Disaster and Environment in Western China, The Ministry of Education, Lanzhou University, Lanzhou 730000, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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