Enhancing crack self-healing properties of low-carbon LC3 cement using microbial induced calcite precipitation technique

doi:10.3389/fmats.2024.1501604

	Enhancing crack self-healing properties of low-carbon LC3 cement using microbial induced calcite precipitation technique
	Wei, Wenzhu 1; He, Qinglong 2; Pang, Sen 1; Ji, Shengjie 1; Cheng, Yiluo 3; Sun, Ninghui 4; Liang, Yinghao 4
	2024-11-15
发表期刊	FRONTIERS IN MATERIALS
ISSN	2296-8016
卷号	11 页码:14
摘要	Limestone Calcined Clay Cement (LC3) is a promising low-carbon alternative to traditional cement, but its reduced clinker content limits its self-healing ability for microcracks, affecting durability. This study explores the application of Microbial Induced Calcite Precipitation (MICP) technique to enhance the crack self-healing capacity of LC3-based materials. Bacillus pasteurii was utilized to induce calcium carbonate precipitation to improve the crack self-healing capacity of LC3, thereby addressing its limited durability due to reduced clinker content. Experimental tests focused on optimizing the growth conditions for B. pasteurii, evaluating the compressive strength, capillary water absorption, and crack self-healing rates of the modified LC3 material. Results showed that under optimal conditions (pH of 9, inoculation volume of 10%, incubation temperature of 30 degrees C, and shaking speed of 150 rpm), the bacterial strain exhibited maximum metabolic activity. The Microbe-LC3 mortar demonstrated a self-healing rate of up to 97% for cracks narrower than 100 mu m, significantly higher than unmodified LC3. Additionally, the compressive strength of Microbe-LC3 was enhanced by approximately 15% compared to standard LC3 mortar after 28 days. The capillary water absorption was reduced, indicating improved durability due to the microbial-induced calcium carbonate filling the pores. This study confirms that MICP technology is a viable approach to significantly enhance the performance of LC3, contributing to the development of more durable and sustainable cementitious materials for construction applications.
关键词	limestone calcined clay cement microbial induced calcite precipitation Bacillus pasteurii crack self-healing compressive strength low-carbon cementitious materials
DOI	10.3389/fmats.2024.1501604
收录类别	SCI
语种	英语
资助项目	Education Department of Hebei Province[CXY2024041]
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:001365981400001
出版者	FRONTIERS MEDIA SA
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.204/handle/2XEOYT63/41143
专题	中国科学院计算技术研究所期刊论文_英文
通讯作者	Sun, Ninghui; Liang, Yinghao
作者单位	1.China State Construct Engn Corp, Beijing Bldg Res Inst Corp Ltd, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Comp Technol, Beijing, Peoples R China 3.Dalian Maritime Univ, Dalian, Liaoning, Peoples R China 4.Hebei Univ Technol, Sch Civil & Transportat Engn, Tianjin, Peoples R China
推荐引用方式 GB/T 7714	Wei, Wenzhu,He, Qinglong,Pang, Sen,et al. Enhancing crack self-healing properties of low-carbon LC3 cement using microbial induced calcite precipitation technique[J]. FRONTIERS IN MATERIALS,2024,11:14.
APA	Wei, Wenzhu.,He, Qinglong.,Pang, Sen.,Ji, Shengjie.,Cheng, Yiluo.,...&Liang, Yinghao.(2024).Enhancing crack self-healing properties of low-carbon LC3 cement using microbial induced calcite precipitation technique.FRONTIERS IN MATERIALS,11,14.
MLA	Wei, Wenzhu,et al."Enhancing crack self-healing properties of low-carbon LC3 cement using microbial induced calcite precipitation technique".FRONTIERS IN MATERIALS 11(2024):14.