Mechanism Analysis and Improvement of Bacterial Bio-Mineralization for Self-healing Concrete Using Bacillus subtilis Natto Immobilized in Lightweight Aggregate

Nguyen Ngoc Tri Huynh, Kei ichi Imamoto, Chizuru Kiyohara, Nguyen Pham Huong Huyen, Nguyen Khanh Son

研究成果: Conference contribution査読

抄録

Despite many technical improvements, concrete still faces quality degradation problems caused by cracks. Many approaches have been studied more extensively, meeting the criteria and realizing that management should be better than preventing the cracks in concrete. With the ability to be easily cultured and form CaCO3, the potential to use Bacillus subtilis natto in full-scale application is promising. Although alkali-tolerant bacteria have been widely studied to maintain enough vegetative cells until the crack formation, their survival is minimal, even when the bacteria were transformed into spores before mixing to concrete. Current works still lack a better understanding of the grave of the factors affecting the fundamental reactions involved, particularly bacterial growth and its bio-mineralization in harsh conditions as concrete. This study clarifies the bio-mineralization of Bacillus subtilis natto with the effects of nutrient-low medium to find a suitable way to protect and maintain the self-healing abilities for a long time. The high survival rate of bacteria immobilized in lightweight aggregate contributes essential information for maintaining self-healing ability at later-age of concrete (durability).

本文言語English
ホスト出版物のタイトルCIGOS 2021, Emerging Technologies and Applications for Green Infrastructure - Proceedings of the 6th International Conference on Geotechnics, Civil Engineering and Structures
編集者Cuong Ha-Minh, Anh Minh Tang, Tinh Quoc Bui, Xuan Hong Vu, Dat Vu Khoa Huynh
出版社Springer Science and Business Media Deutschland GmbH
ページ763-771
ページ数9
ISBN(印刷版)9789811671593
DOI
出版ステータスPublished - 2022
イベント6th International Conference on Geotechnics, Civil Engineering and Structures, CIGOS 2021 - Hạ Long Bay, Viet Nam
継続期間: 28 10月 202129 10月 2021

出版物シリーズ

名前Lecture Notes in Civil Engineering
203
ISSN(印刷版)2366-2557
ISSN(電子版)2366-2565

Conference

Conference6th International Conference on Geotechnics, Civil Engineering and Structures, CIGOS 2021
国/地域Viet Nam
CityHạ Long Bay
Period28/10/2129/10/21

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