Effect of Bacillus Subtilis Bacteria on the mechanical properties of corroded self-healing concrete

被引：0

作者：

Nindhita, Kharisma Wira ^{[1
,2
]}

Zaki, Ahmad ^{[1
,2
]}

Zeyad, Abdullah M. ^{[3
]}

机构：

[1] Postgraduate Program, Universitas Muhammadiyah Yogyakarta, Indonesia

[2] Civil Engineering Department, Faculty of Engineering, Universitas Muhammadiyah Yogyakarta, Indonesia

[3] Civil Engineering Department, Jazan University, Saudi Arabia

来源：

Frattura ed Integrita Strutturale | 2024年 / 18卷 / 68期

关键词：

Bacteria - Bacteriology - Bending strength - Compressive strength - Concrete beams and girders - Concrete testing - Corrosion rate - Cracks - Self-healing materials;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Reinforced concrete has a weakness for corrosion which can cause the concrete to crack and the concrete structure to fail. To overcome this problem, a self-healing concrete method is needed that can close cracks and inhibit the rate of natural corrosion. Bacillus subtilis as a self-healing agent in concrete has been proven to be able to increase the compressive strength and flexural strength of concrete. The method used in this research is to add bacterial hydrogel encapsulation to concrete with a variation of 0%; 0.1%; 0.6%; and 1.5% by weight of sand. The test object is a reinforced concrete beams and cylindrical concrete with compressive design strength of 30 MPa. The concrete specimens will go through a series of tests, such as corrosion acceleration tests using DC power supply, self-healing tests by visual observation, flexural strength, ductility, stiffness, and compressive strength tests using Universal Testing Machine (UTM). From the test results, it was found that the addition of 0.1% bacterial encapsulation variation was the optimum value for increasing the mechanical properties of self-healing concrete and reduce the corrosion rate on self-healing concrete. © 2024 This is an open access article under the terms of the CC-BY 4.0.

引用

页码：140 / 158