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Self-healing behaviors of damaged rock salt under humidity cycling

文献类型：期刊论文

作者Zeng, Zhen1,3,4; Ma, Hongling1,3,4; Yang, Chunhe1,3,4; Zhao, Kai1,3,4; Liang, Xiaopeng1,3,4; Li, Hang2; Zheng, Zhuyan1,3,4
刊名INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
出版日期2024-02-01
卷号174页码:12
关键词Rock salt Humidity cycle Self -healing Compressed air energy storage
ISSN号1365-1609
DOI10.1016/j.ijrmms.2024.105636
英文摘要During the operation of a compressed air energy storage system, the excavation damaged zone surrounding the salt cavern experiences daily humidity cycles. This paper aims to investigate the self-healing effect of rock salt in such a humidity environment. Pre-damaged rock salt specimens were cured under varying numbers of humidity cycles. Ultrasonic pulse velocity (UPV) and uniaxial compressive strength (UCS) were then measured. The results revealed that the integrity of the cured rock defined by UPV significantly improved after 30 cycles. During uniaxial loading, the specimens subjected to cycling demonstrated a shorter compaction stage and a longer plastic deformation compared to non-cycled specimens. Furthermore, their UCS and peak strain even exceeded those of specimens without initial damage, indicating a notable enhancement in strength and ductility. The presence of self-healing microstructures formed by dissolution-diffusion-crystallization processes inside cracks was observed through a scanning electron microscope. These microstructures effectively converted cracks into isolated sections. These findings suggest that the formation of microstructures sealing cracks played a key role in improving acoustic and mechanical properties. Additionally, our inference suggests that the dry stages of humidity cycling lead to supersaturation of grain boundary brine, thereby accelerating the recrystallization process during self-healing. Consequently, humidity cycles produced a more pronounced self-healing effect compared to an environment maintained at a constant high humidity level.
资助项目National Science Foundation for Excellent Young Scholars[52122403] ; Youth Innovation Promotion Association CAS[2019324] ; Special Fund for Strategic Pilot Technology of Chinese Academy of Sciences[XDPB21] ; Major Research Development Program of Hebei province[21374101D] ; Major Research Development Program of Hubei province[2022BAA093] ; Major Research Development Program of Hubei province[2022BAD163] ; Major science and technology research and development project in Jiangxi Province[2023ACG01004]
WOS研究方向Engineering ; Mining & Mineral Processing
语种英语
WOS记录号WOS:001171135600001
出版者PERGAMON-ELSEVIER SCIENCE LTD
源URL[http://119.78.100.198/handle/2S6PX9GI/40789]  
专题中科院武汉岩土力学所
通讯作者Ma, Hongling; Zhao, Kai
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Chongqing Univ, State Key Lab Coal Mine Disaster Dynam & Control, Chongqing 400044, Peoples R China
3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China
4.Chinese Acad Sci, Inst Rock & Soil Mech, Hubei Key Lab Geoenvironm Engn, Wuhan 430071, Peoples R China
推荐引用方式
GB/T 7714		 Zeng, Zhen,Ma, Hongling,Yang, Chunhe,et al. Self-healing behaviors of damaged rock salt under humidity cycling[J]. INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,2024,174:12.
APA Zeng, Zhen.,Ma, Hongling.,Yang, Chunhe.,Zhao, Kai.,Liang, Xiaopeng.,...&Zheng, Zhuyan.(2024).Self-healing behaviors of damaged rock salt under humidity cycling.INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,174,12.
MLA Zeng, Zhen,et al."Self-healing behaviors of damaged rock salt under humidity cycling".INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES 174(2024):12.

入库方式： OAI收割

来源：武汉岩土力学研究所

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