MICP增强水泥改良红层泥岩填料力学性能及作用机理

doi:10.11896/cldb.24060063

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Abstract The high-speed railway inevitably passes through the areas with red mudstone layer, which is of poor engineering properties. A study was conducted on microbial induced carbonate precipitation (MICP) technique to enhance the performance of red mudstone roadbed filler by using self-extracted Bacillus cereus. By comparing the physical and mechanical indicators of the samples before and after improvement using MICP technique, the enhancement effect was analyzed, and the synergistic enhancement mechanism of cement and MICP was explored from a microstructure perspective. The results showed that, compared with the cement modified soil samples, the unconfined compressive strength of the cement-microbial modified soil samples increased by 12.31%—14.25%, the permeability coefficient decreased by 6.06%—34.06%, and the unloaded expansion rate decreased to 0.52%—0.65%. The addition of microorganisms significantly improves the mechanical strength, impermeability, and expansion resistance of cement modified soil samples. Cement hydration reaction and microbial mineralization reaction are carried out simultaneously and promote each other. Under the combined effects of both, more calcium carbonate crystals and hydrated calcium silicate (C-S-H) gel and other cementitious substances are generated to fill the pores between soil particles and cement adjacent soil particles, minimizing the pore size, reducing the number of filled pores, and increasing the contact points between particles. In this way, the adjacent particles are cemented more closely, thereby improving the internal pore structure of the sample, enhancing the cementation performance between particles, and thus improving the physical and mechanical properties of red mudstone filler. The expected research results can provide reference for the engineering application of microbial enhanced cement soil technology.

Key words： microbially induced carbonate precipitation (MICP) red mudstone filler mechanical property expansion resistance enhancement mechanism

Published: 10 August 2025 Online: 2025-08-13

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TU44

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	Articles by authors
	XIAO Yao
	DENG Huafeng
	CHENG Lei
	HUANG Xiaoyun
	LI Jianlin

Cite this article:

XIAO Yao,DENG Huafeng,CHENG Lei, et al. Mechanical Properties and Mechanism of MICP Enhanced Cement Modified Red Mudstone Filler[J]. Materials Reports, 2025, 39(15): 24060063-8.

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https://www.mater-rep.com/EN/10.11896/cldb.24060063 OR https://www.mater-rep.com/EN/Y2025/V39/I15/24060063

1 Zhang W J, Wang Y S, Ma T. China Earthquake Engineering Journal, 2022, 44(2), 264 (in Chinese).
张渭军, 王永胜, 马滔. 地震工程学报, 2022, 44(2), 264.
2 Xu H, Zhou T Y, Wang X Y, et al. Rock and Soil Mechanics, 2021 , 42(8), 2259 (in Chinese).
徐华, 周廷宇, 王歆宇, 等. 岩土力学, 2021, 42(8), 2259.
3 Chen K, Liu X F, Yuan S Y, et al. Rock and Soil Mechanics, 2022, 43(5), 1261 (in Chinese).
陈康, 刘先峰, 袁胜洋, 等. 岩土力学, 2022, 43(5), 1261.
4 Wang Z M, Jiang G L, Wei Y X. Subgrade Engineering, 2006(5), 86 (in Chinese).
王智猛, 蒋关鲁, 魏永幸. 路基工程, 2006(5), 86.
5 Xu P, Jiang G L, Ren S J, et al. Rock and Soil Mechanics, 2019, 40(2), 678 (in Chinese).
徐鹏, 蒋关鲁, 任世杰, 等. 岩土力学, 2019, 40(2), 678.
6 Li C H. Northern Communications, 2016(9), 38 (in Chinese).
李传华. 北方交通, 2016(9), 38.
7 Zhang Z Y, Jiang G L, Sichuan Architecture, 2008, 28(1), 101 (in Chinese).
张中云, 蒋关鲁, 王智猛. 四川建筑, 2008, 28(1), 101.
8 Zhu Y B, Yu H M, Yang Y X, et al. Chinese Journal of Rock Mechanics and Engineering, 2013, 32(2), 425 (in Chinese).
祝艳波, 余宏明, 杨艳霞, 等. 岩石力学与工程学报, 2013, 32(2), 425.
9 Gao S G, Gao H, Xiao Z Q, et al. Subgrade Engineering, 2018(3), 107 (in Chinese).
高曙光, 高晖, 肖尊群, 等. 路基工程, 2018(3), 107.
10 Chen W N, Wang X, Xu S C, et al. China Sciencepaper, 2022, 17 (12), 1325 (in Chinese).
陈伟南, 王旭, 徐硕昌, 等. 中国科技论文, 2022, 17 (12), 1325.
11 Luo X H, Zhang S J, Guo R X, et al. Materials Reports, 2023, 37 (S2), 298 (in Chinese).
罗晓洪, 张世俊, 郭荣鑫, 等. 材料导报, 2023, 37 (S2), 298.
12 Qian C X, Wang A H, Wang X. Rock and Soil Mechanics, 2015, 36(6), 1537 (in Chinese).
钱春香, 王安辉, 王欣. 岩土力学, 2015, 36(6), 1537.
13 Mitchell J K, Santamarina J C. Journal of Geotechnical and Geoenvironmental Engineering, 2005, 131(10), 1222.
14 Van Paassen L A, Daza C M, Staal M, et al. Ecological Engineering, 2010, 36(2), 168.
15 Xu W Q, Lin W B, Luo C H, et al. Journal of Fujian University of Technology, 2022, 20 (6), 511(in Chinese).
许万强, 林文彬, 罗承浩, 等. 福建工程学院学报, 2022, 20 (6), 511.
16 Khan Md N H, Amarakoon G G N N, Shimazaki S, et al. Materials Transactions, 2015, 56(10), 1725.
17 Cui H, Xiao Y, Sun Z C, et al. Chinese Journal of Geotechnical Engineering, 2022, 44 (3), 474 (in Chinese).
崔昊, 肖杨, 孙增春, 等. 岩土工程学报, 2022, 44 (3), 474.
18 Ministry of Railways of the People's Republic of China. Design specification for high speed railway (trial):TB10621. China Railway Publishing House, China, 2011(in Chinese).
中华人民共和国铁道部. 高速铁路设计规范(试行):TB10621. 中国铁道出版社, 2011.
19 Zhi Y Y. MICP Experiment and mechanism research on reinforcement of fractured rock mass. Master's Thesis, China Three Gorges University, China, 2020 (in Chinese).
支永艳. MICP加固裂隙岩体的试验及机理研究. 硕士学位论文, 三峡大学, 2020.
20 Ministry of Water Resources of the People's Republic of China. Standard for soil test methods: GB/T 50123, China Planning Press, China, 2019(in Chinese).
中华人民共和国水利部. 土工试验方法标准:GB/T 50123, 北京, 中国计划出版社, 2019.
21 Cheng L, Deng H F, Xiao Y, et al. Journal of China Three Gorges University (Natural Sciences), 2023, 45(4), 61 (in Chinese).
程雷, 邓华锋, 肖瑶, 等. 三峡大学学报(自然科学版), 2023, 45(4), 61.
22 Ministry of railways of the People's Republic of China. Code for geotechnical testing of railway engineering:TB10102, China Railway Publishing House, China, 2011(in Chinese).
中华人民共和国铁道部. 铁路工程土工试验规程:TB10102, 中国铁道出版社, 2011.
23 Zhao M L, Xu R. Journal of Chongqing Jiaotong Institute, 2000, 19(2), 80.
赵明阶, 徐蓉. 重庆交通学院学报, 2000, 19(2), 80.
24 Yu C C, Lu Z, Yao H L, et al. Rock and Soil Mechanics, 2022, 43(S1), 157 (in Chinese).
喻成成, 卢正, 姚海林, 等. 岩土力学, 2022, 43(S1), 1572.
25 Li J L, Zhu L Y, Zhou K P, et al. Rock and Soil Mechanics, 2019, 40(9), 3524 (in Chinese).
李杰林, 朱龙胤, 周科平, 等. 岩土力学, 2019, 40(9), 3524.
26 Wang X M, Qian C X, Chen Y Q, et al. Journal of Southeast University (Natural Science Edition), 2020, 50(6), 1023 (in Chinese).
王潇猛, 钱春香, 陈燕强, 等. 东南大学学报(自然科学版), 2020, 50(6), 1023.