微生物矿化胶结岩屑的耐候性与石灰岩质文物修复研究

doi:10.3724/1000-6915.jrme.2024.1000

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Abstract Microbial mineralization technology presents distinct advantages for the restoration of stone cultural relics due to its material compatibility and environmental benefits. This study investigates the mechanical properties and weather resistance of biomineralized limestone debris, assessing its effectiveness for in-situ restoration. Laboratory tests and field applications utilized particle size distribution of debris, calcium source concentration, and grouting parameters as control factors to evaluate the strength and weather resistance characteristics of biogrouting cemented limestone debris. A quantitative relationship between ultrasonic wave velocity and unconfined compressive strength was established for the consolidated aggregate. Combined with engineering applications and in-situ testing, the restoration effects of biogrouting on stone cultural relics were evaluated. Results demonstrate that the unconfined compressive strength of microbial mineralization cemented debris reaches 11.26 MPa, and this cemented debris exhibits good weather resistance under adverse environmental conditions. The calcite crystal cluster bridging structure not only enhances mechanical properties but also maintains air permeability at the repair site of stone cultural relics. Furthermore, the established quantitative relationship between ultrasonic wave velocity and unconfined compressive strength enables effective evaluation of the restoration effects on cultural relics. In-situ restoration of fractured stone relics displayed favorable characteristics, with the mineralized cemented debris at the repair site achieving a strength of 5.44 MPa and Barcol hardness reaching 89.25% of the original stone. This study confirms that biogrouting mineralized cemented limestone debris demonstrates engineering applicability for the restoration of limestone cultural relics and shows promising prospects for future applications.

Key words： rock mechanics microbial mineralization cemented debris weatherability stone cultural relics cultural relics restoration

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	Articles by authors
	ZHANG Yukai1
	SHAO Guanghui1
	HUANG Rongpin1
	SHI Bo2
	3
	DI Zhiqiang4
	FANG Jiajun1

Cite this article:

ZHANG Yukai1,SHAO Guanghui1,HUANG Rongpin1, et al. Weatherability of microbial mineralized cemented debris and restoration of limestone cultural relics[J]. , 2025, 44(8): 2112-2121.

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https://rockmech.whrsm.ac.cn/EN/10.3724/1000-6915.jrme.2024.1000 OR https://rockmech.whrsm.ac.cn/EN/Y2025/V44/I8/2112

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