Experimental Research on Microbial Grouting Effect on Strength of Granite Residual Soil in Guangdong

MAO Qiang; GUO Kai; DU Jianhang; XIAO Guangning; ZHANG Jiangwei; GUO Hongxian; CHENG Xiaohui

doi:10.3724/j.gyjzG23082602

Volume 54 Issue 9

Sep. 2024

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MAO Qiang, GUO Kai, DU Jianhang, XIAO Guangning, ZHANG Jiangwei, GUO Hongxian, CHENG Xiaohui. Experimental Research on Microbial Grouting Effect on Strength of Granite Residual Soil in Guangdong[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(9): 26-31. doi: 10.3724/j.gyjzG23082602

Citation:

MAO Qiang, GUO Kai, DU Jianhang, XIAO Guangning, ZHANG Jiangwei, GUO Hongxian, CHENG Xiaohui. Experimental Research on Microbial Grouting Effect on Strength of Granite Residual Soil in Guangdong[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(9): 26-31. doi: 10.3724/j.gyjzG23082602

Citation:

MAO Qiang, GUO Kai, DU Jianhang, XIAO Guangning, ZHANG Jiangwei, GUO Hongxian, CHENG Xiaohui. Experimental Research on Microbial Grouting Effect on Strength of Granite Residual Soil in Guangdong[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(9): 26-31. doi: 10.3724/j.gyjzG23082602

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Experimental Research on Microbial Grouting Effect on Strength of Granite Residual Soil in Guangdong

doi: 10.3724/j.gyjzG23082602

1. CSG EHV Power Transmission Company, Guangzhou 510700, China;
2. Department of Civil Engineering, Tsinghua University, Beijing 100084, China;
3. Hebei GEO University, Shijiazhuang 050031, China

Received Date: 2023-08-26
Available Online: 2024-10-18

Abstract

Abstract

Be aimed at the issue that granite residual soil slopes are prone to landslide in heavy rainfall in Guangdong, the use of microbial induced calcium carbonate precipitation technique to improve the mechanical properties of granite residual soil was performed. The specimens of granite residual soil with a average particle diameter of 0.179 mm and 1.547 mm respectively, taken from Zhaoqing and Qingyuan in Guangdong, were grounted by MICP and tested their mechanisal properties before and after being grouted. The results showed that both types of granite residual soil had been successfully cemented, and the particle sizes and composition of soil influenced the cemented effect by MICP. Their uniaxial unconfined compressive strength reached 2.74 MPa and 3.36 MPa respectively. Triaxial compression tests were also conducted, and the test result indicated that the cohesion of specimens from both sites were improved.
- microbial induced calcium carbonate precipitation technique,
- granite residual soil,
- triaxial compression test,
- microbial grouting

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References(11)

References

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