Influence of bacteria on the compressive strength and water absorption of concrete specimens exposed to elevated temperature

Milad Nimafar; Zahra Ahmadi; Shahrokh Soltaninia

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Influence of bacteria on the compressive strength and water absorption of concrete specimens exposed to elevated temperature

Publish place: 13th International Congress on Civil Engineering

Publish Year: 1402

Type: Conference paper

Language: English

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https://civilica.com/doc/1852995

Document National Code:

ICCE13_335

Index date: 13 December 2023

Influence of bacteria on the compressive strength and water absorption of concrete specimens exposed to elevated temperature abstract

In the present laboratory study, cubes of concrete were heated at a temperature of 600°C. Then, the efficiency of the microorganism that produces calcium carbonate was examined by conducting compressive strength and water absorption tests on control, heat-damaged and bacterial specimens to evaluate the amount of repairing of damaged samples. The experiment test results revealed that the microorganism Bacillus Sphaericus was very effective in repairing surface cracks in damaged specimens. The compressive strength of specimens treated with the microorganism rose by 52%. In addition, the amount of water absorption of bacterial specimens decreased by 39% compared to damaged samples. Scanning Electronic Microscope (SEM) image of bacterial sample showed that the microorganism produced a considerable amount of calcium carbonate to fill the thermal cracks.

Influence of bacteria on the compressive strength and water absorption of concrete specimens exposed to elevated temperature Keywords:

concrete , heat , bacteria , crack healing , water absorption

Influence of bacteria on the compressive strength and water absorption of concrete specimens exposed to elevated temperature authors

Milad Nimafar

Department of Engineering, Shahid Ashrafi Esfahani University, Isfahan, Iran

Zahra Ahmadi

Department of Civil Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran.

Shahrokh Soltaninia

Department of Environmental Science, Faculty of Natural Resources and Environment, Scienceand Research Branch, Islamic Azad University, Tehran, Iran

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I'm the author of the paper

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Link to this Paper:

https://civilica.com/doc/1852995

Document National Code:

ICCE13_335

Index date: 13 December 2023

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Nimafar, Milad and Ahmadi, Zahra and Soltaninia, Shahrokh,1402,Influence of bacteria on the compressive strength and water absorption of concrete specimens exposed to elevated temperature,13th International Congress on Civil Engineering,Tehran,https://civilica.com/doc/1852995

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Scientometrics

The specifications of the publisher center of this Paper are as follows:

Ranking of Shahid Ashrafi University of Isfahan

Type of center: موسسه غیرانتفاعی

Paper count: 1,239

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