Investigation of the crack healing performance in mortar using microbially induced calcium carbonate precipitation (MICP) method
Investigation of the crack healing performance in mortar using microbially induced calcium carbonate precipitation (MICP) method
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DOI：
10.1016/j.conbuildmat.2019.04.035
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发表时间：
2019-07-10
影响因子：
7.4
通讯作者：
Likitlersuang, Suched
中科院分区：
文献类型：
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作者：
Jongvivatsakul, Pitcha;Janprasit, Karn;Likitlersuang, Suched
本研究提出了利用细菌细胞修复水泥砂浆中现有裂缝的可行性。球形芽孢杆菌（LMG 22257）已被用于产生微生物诱导碳酸钙沉淀（MICP），用于裂缝闭合。通过每天滴加细菌和尿素溶液，将愈合剂外部施加到开裂的砂浆试样上。在20天的处理后，MICP处理的样品显示出比开裂样品高43%的抗压强度。此外，它在水密性方面与不含人工裂缝的控制砂浆相当（C）2019 Elsevier Ltd.保留所有权利。
This study presents the feasibility of using bacterial cells to repair of the existing cracks within the cement mortar. Bacillus sphaericus (LMG 22257) has been used to produce microbially induced calcium carbonate precipitation (MICP) for crack closing. The healing agent were externally applied to the cracked mortar specimens by dropping the bacteria and urea solutions daily. After 20 days of treatment, the MICP-treated sample showed 43% higher compressive strength than that of cracked sample. In addition, it is comparable in terms of water tightness to control mortar made without artificial crack (C) 2019 Elsevier Ltd. All rights reserved.