Mechanism Study on Synergistic Effect of Microorganisms and Magnesium Oxide on Cementing Drill Cuttings

TANG Guowang; ZHAO Zhongjun; ZHOU Kai; LI Chen; YANG Yong; DING Kuan; YU Peizhi; WANG Guihe

doi:10.3724/j.gyjzG23031311

Volume 54 Issue 9

Sep. 2024

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2024 > 54(9): 19-25

TANG Guowang, ZHAO Zhongjun, ZHOU Kai, LI Chen, YANG Yong, DING Kuan, YU Peizhi, WANG Guihe. Mechanism Study on Synergistic Effect of Microorganisms and Magnesium Oxide on Cementing Drill Cuttings[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(9): 19-25. doi: 10.3724/j.gyjzG23031311

Citation:

TANG Guowang, ZHAO Zhongjun, ZHOU Kai, LI Chen, YANG Yong, DING Kuan, YU Peizhi, WANG Guihe. Mechanism Study on Synergistic Effect of Microorganisms and Magnesium Oxide on Cementing Drill Cuttings[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(9): 19-25. doi: 10.3724/j.gyjzG23031311

Citation:

TANG Guowang, ZHAO Zhongjun, ZHOU Kai, LI Chen, YANG Yong, DING Kuan, YU Peizhi, WANG Guihe. Mechanism Study on Synergistic Effect of Microorganisms and Magnesium Oxide on Cementing Drill Cuttings[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(9): 19-25. doi: 10.3724/j.gyjzG23031311

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Mechanism Study on Synergistic Effect of Microorganisms and Magnesium Oxide on Cementing Drill Cuttings

doi: 10.3724/j.gyjzG23031311

1. Beijing Urban Construction Group Co., Ltd., Beijing 100088, China;
2. Shenzhen Jianyan Testing Co., Ltd., Shenzhen 518116, China;
3. CIGIS (CHINA) LIMITED, Beijing 100010, China;
4. China University of Geosciences (Beijing), Beijing 100083, China

Received Date: 2023-03-13
Available Online: 2024-10-18

Abstract

Abstract

Microbial-induced calcium carbonate precipitation (MICP) is a new reinforcement and remediation method for contaminated soil, which also provides a new direction to cement drill cuttings. Based on the analysis of the cemented body of highly active magnesium oxide gel material, an in-depth study on synergistic cementation for drill cuttings by microorganisms and magnesium oxide was conducted, and a new treatment methods for drill cuttings was presented. The speciemens cemented by microorganisms combined with magenesium oxide were tested with FTIRs, XRDs and SEMs, and the results indicated that rosette hydro-magnesite (4MgCO₃·Mg(OH)₂·4H₂O) and acicular nesquehonite (MgCO₃·3H₂O) were yielded in synergy of microorganism and magnesium oxide. The loose particles were cemented into the well-structured cemented body by the dense carbonate network which was the cementitious mechanism of the synergistic effect of microorganism and magnesium oxide. The analysis of the factors affecting the strength of the cured body showed that the development trend of the strength of the cured body was positively correlated with microbial concentrations, active magnesium oxide concentrations, and curing times, and negatively correlated with the water content and the urea concentration.
- microorganism,
- reactive magnesium oxide,
- synergy,
- cementation,
- drill cutting

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References(16)

References

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