广东工业大学学报 ›› 2024, Vol. 41 ›› Issue (02): 11-22.doi: 10.12052/gdutxb.230187

• 土木工程 • 上一篇    下一篇

微生物诱导碳酸钙沉淀技术的工程应用进展与评述

梁仕华1, 谢运鹏1, 邓尤术2   

  1. 1. 广东工业大学 土木与交通工程学院, 广东 广州 510006;
    2. 中铁隧道集团三处有限公司, 广东 广州 510006
  • 收稿日期:2023-11-22 出版日期:2024-03-25 发布日期:2024-04-23
  • 作者简介:梁仕华(1976-),男,教授,博士,主要研究方向为环境岩土及地下空间工程,E-mail:shihua_l@gdut.edu.cn
  • 基金资助:
    国家自然科学基金资助项目(52078142);广东省自然科学基金资助项目(2022A1515011047);广州市科技计划项目(202002030194)

Microbially Induced Calcium Carbonate Precipitation Technique Progress and Review of Engineering Applications

Liang Shi-hua1, Xie Yun-peng1, Deng You-shu2   

  1. 1. School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China;
    2. China Railway Tunnel Group three Co., Ltd., Guangzhou 510006, China
  • Received:2023-11-22 Online:2024-03-25 Published:2024-04-23

摘要: 基于微生物诱导碳酸钙沉淀(Microbially Induced Calcium carbonate Precipitation,MICP) 技术的土体胶结固化技术是21世纪以来岩土工程、地质工程领域研究的热点之一。本文系统阐述了MICP技术的加固机理,从MICP加固效果和应用实践的角度出发,对MICP技术工程应用的研究现状进行评述。结果表明:MICP固化后的场地强度呈现出不均匀性明显、碳酸钙含量分布随深度递减的趋势;沙漠环境中,原位提取的菌种诱导生成的碳酸钙覆膜较传统的巴氏芽孢杆菌,具有更好的强度表现和稳定性;新型MICP技术应用(如微生物水泥、微生物砖) 在强度、耐久性上表现出良好的应用前景,有望为实现我国双碳目标注入新的活力。基于MICP技术碳酸钙沉淀特质的影响因素,现场尺度下如何提高碳酸钙分布的均匀性以及在季节性变化下的碳酸钙骨架的耐久性、不同环境下的固化效率改进方案应该成为日后研究的重中之重。

关键词: 微生物诱导碳酸钙沉淀, 固化效果影响因素, 工程应用

Abstract: Soil cementation and solidification, based on microbially induced calcium carbonate precipitation (MICP) technology, has emerged as research hotspots in geotechnical engineering and geological engineering since the 21st century. In this research, the reinforcement mechanism of MICP technology and the research status of the engineering application and the reinforcement effect and application practice are systematically described and reviewed. The results show that the strength of the site after MICP solidification shows an obvious non-uniformity, and the distribution of calcium carbonate content decreases with depth. In desert environment, the calcium carbonate coating induced by in-situ extraction of bacteria demonstrates superior strength and stability to the traditional Bacillus pasteurelli. The application of new MICP technology, such as microbial cement and microbial brick, shows promising prospects in terms of strength and durability, and new vitality into the realization of China’s double carbon goal. Addressing the factors affecting the precipitation characteristics of calcium carbonate by MICP technology, the uniformity of calcium carbonate distribution at field scale is enhanced, the durability of calcium carbonate skeleton under seasonal changes ensured, and curing efficiency under different environments improved, which should all be prioritized in future research.

Key words: microbial induced calcium carbonate precipitation, influencing factors of curing effect, engineering application

中图分类号: 

  • TU441
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