Experimental Study on the Performance of Self-Healing Concrete Based on Temperature Response

DOI: https://doi.org/10.62517/jcte.202406403

Author(s)

Xinglong Yan, Aiping Fei*, Yi Lu, Bohan Huang, Yugang Zhi, Junfeng Li

Affiliation(s)

School of Civil Engineering, University of Science and Technology Liaoning, Anshan, Liaoning, China *Corresponding Author

Abstract

In construction engineering, new building materials exhibit unique properties, with self-healing concrete drawing significant attention for addressing issues such as water leakage through fine cracks in concrete. This thesis investigates the healing performance of self-healing concrete based on ceramsite carrying Bacillus subtilis under various temperature conditions, conducting repair tests on self-healing concrete within a temperature range of 10°C to 40°C. It was found that the volume fraction of ceramsite carrying bacteria significantly impacts the mechanical properties of self-healing concrete. For the mix proportion in this study, the optimal replacement volume fraction of ceramsite in self-healing concrete was determined to be 45%. Additionally, environmental temperature noticeably affects the healing performance of self-healing concrete, with the crack healing rate showing a trend of initially decreasing and then increasing with rising temperature. The best healing effect was observed at an environmental temperature of 40°C, achieving a healing rate of 81.8%.

Keywords

Self-Healing Concrete; Bacillus Subtilis; Temperature Effect; Ceramsite

References

[1] Hou Fuxing, Bai Yiming, Shen Di, Wang Jianyun, Research Progress on Carrier Materials for Microbial Self-Healing Concrete. Materials Reports, 2024, 38(13): 23040048 (1-15). [2] Wang Wenhua, Li Zhu, Zhang Jiaguang, et al. Experimental Study on the Waterproof Performance of Microbial Mineralization Repairing Concrete Cracks. Concrete, 2020, 365(3): 34–37. [3] Shradha Jena, Bidyadhar Basa, Impact of Bacillus subtilis bacterium on the properties of concrete. Materials Today: Proceedings 32(2020): 651–656. [4] Zhou Mengjun, Zhang Jiaguang, et al., Experimental Study on the Compressive Strength of Concrete with Microbial Mineralization Deposition-Based Self-Healing Cracks. Concrete, 2018(3): 3-39. [5] Cheng Zhiqing, Li Shuangxiang, Liu Yu, et al. Research Progress on Self-Healing Concrete. Journal of Highway and Transportation Research and Development (Applied Technology Edition), 2020, 16(11): 84-87. [6] Lian Jijian, Gao Maomao, Yan Yue, et al. Research Progress on Self-Healing Concrete Based on MICP Technology. South-to-North Water Transfers and Water Science & Technology, 2019, 17(1): 164-177. [7] Lai Xiaoying, Study on the Effect of Coral Reef-Carried Microorganisms in Concrete Crack Self-Healing. Zhejiang Ocean University, 2022. [8] Gao Ruixiao, Wang Jianyun, Research Progress on the Repair of Existing Micro-Cracks in Concrete Using Microbial Mineralization Deposition of Calcium Carbonate Technology. Materials Reports, 2023, 37(01): 96-105. [9] Xu Yao, Li Wenpei, Wang Li’na, Wang Jianping, Jia Baozhi. Surface Protection and Crack Repair of Cement-Based Materials Based on Microbial Mineralization. Water Power, 2023, 50(02): 101-107. [10] Khushnood R A, Qureshi Z A, Shaheen N, et al. Bio-mineralized self-healing recycled aggregate concrete for sustainable infrastructure. Journal of Hydroelectric Engineering, 2020, 703, 135007.