Influence of Bacteria on Performance of Air Entrained Concrete

Document Type : Research Article

Authors

Department of Civil Engineering, Isfahan University of Technology, Isfahan, Iran

Abstract

Biological methods (adding bacteria to mixing water) is a one way to increase durability of concrete and repairing the cracks. Studies show that concrete contains bacteria has harsh environment, i.e. very high pH, small pore size and dry conditions, hence bacteria should be protected from this circumstances. In this study, for the first time, air entrained concrete is used for protecting the bacteria in the harsh condition of concrete. The effect of using sporosarcina pasteurii, which is a calcium carbonate-producing bacteria, on the performance of air entrained concrete has been studied in the carbonation depth; to do so, 24 concrete prisms were made using bacterial strains accompanied with mixing water. The results indicated that bacteria incorporation in air entrained concrete, near the source of calcium, reduces carbonation depth.

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References

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Amirkabir Journal of Civil Engineering
Volume 50, Issue 6
March and April 2019
Pages 1103-1112

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