表面粗糙度对砂浆的MICP表面防护性能的影响

doi:10.11896/cldb.24050077

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Abstract Microbially induced calcium carbonate precipitation (MICP) is regarded as a highly promising technology for surface protection of stone, cementitious materials, soil sites, etc. The surface protection efficiency based on MICP is not only influenced by microbial factors but also related to the surface properties of substrates. In this work, mortar specimens with different surface roughness were constructed using the acid etching method to investigate the effect of roughness on the properties of calcium carbonate and to evaluate the surface protection efficiency. The results indicated that the higher the surface roughness of the substrate, the greater the number of adhered bacteria, the higher the urease activity, and the increased yield of calcium carbonate. The mechanical interlocking strength between the substrate and calcium carbonate increased with the increase of surface roughness, leading to the improvement of calcium carbonate cohesion. This provided a theoretical basis for enhancing the surface protection efficiency of MICP.

Key words： surface protection roughness microbially induced calcium carbonate precipitation (MICP) biogenic calcium carbonate

Published: Online: 2025-05-29

CLC number:

TU528

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	Articles by authors
	ZHANG Rui
	HOU Fuxing
	GAO Ruixiao
	RONG Hui
	WANG Jianyun

Cite this article:

ZHANG Rui,HOU Fuxing,GAO Ruixiao, et al. Influence of Surface Roughness on MICP Surface Protection Performance of Mortar[J]. Materials Reports, 2025, 39(11): 24050077-6.

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https://www.mater-rep.com/EN/10.11896/cldb.24050077 OR https://www.mater-rep.com/EN/Y2025/V39/I11/24050077

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