Compressive Strength Improvement and Water Permeability of Self-Healing Concrete Using Bacillus Subtilis Natto

Nguyen Ngoc Tri Huynh, Kei Ichi Imamoto, Chizuru Kiyohara

研究成果: Conference contribution査読

抄録

In recent years, many projects have been carried out to enhance the durability of concrete structure from the influence of cracks. Generally, managing cracks should be a rather preventative method for sustainable development. Based on that, Bacillus subtilis natto - a local bacterium in Japan was found to have the ability to form CaCO3, which can be used as healing materials for cracks in the concrete structure. The bacterial biomineralization immobilized in lightweight aggregate was studied to improve the compressive strength by healing the cracks and densifying the structure. Moreover, as an essential parameter for durability enhancement, the water permeability of self-healing concrete through a water-flow system was carried out. Experimental results on the behavior of the materials indicate that Bacillus subtilis natto could lead the compressive strength to 40 % higher than the controls. Promising result in preventing the water through the cracks confirmed the self-healing effect with more potential in larger-scale.

本文言語English
ホスト出版物のタイトルCurrent Topics and Trends on Durability of Building Materials and Components - Proceedings of the 15th International Conference on Durability of Building Materials and Components, DBMC 2020
編集者Carles Serrat, Joan Ramon Casas, Vicente Gibert i Armengol
出版社International Center for Numerical Methods in Engineering
ページ113-120
ページ数8
ISBN(電子版)9788412110180
DOI
出版ステータスPublished - 2020
イベント15th International Conference on Durability of Building Materials and Components, DBMC 2020 - Virtual, Online, Spain
継続期間: 20 10月 202023 10月 2020

出版物シリーズ

名前Current Topics and Trends on Durability of Building Materials and Components - Proceedings of the 15th International Conference on Durability of Building Materials and Components, DBMC 2020

Conference

Conference15th International Conference on Durability of Building Materials and Components, DBMC 2020
国/地域Spain
CityVirtual, Online
Period20/10/2023/10/20

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