Communications - Scientific Letters of the University of Zilina 2022, 24(4):D183-D200 | DOI: 10.26552/com.C.2022.4.D183-D200

Studies on Compressive Strength Microstructural Analysis of Self-Compacting Mortar with Bacteria

Middela Sravanthi ORCID...1, S. Venkateswara Rao ORCID...1, Kanthala Krishnaveni ORCID...2, *, Venkata Kamal Lal Meenuga ORCID...2, Sujana Kariveda ORCID...3
1 Department of Civil Engineering, National Institute of Technology, Warangal, Telangana, India
2 Department of Civil Engineering, Anurag University, Telangana, India
3 Department of Biotechnology, Osmania University, Telangana, India

This research proposed bacteria-treated concrete, which is highly desirable because the mineral precipitation induced from microbial activities is pollution free and natural. This study investigates the effects of Bacillus Licheniformis, Bacillus Cohnii and mixed bacteria on compressive strength, ultrasonic pulse velocity test, rapid chloride penetration test, microstructural analysis and bacteria cell concentration of 10 5cell/ml of normal and self-compacting mortars made with and without fly ash for 7 and 28 days. With self-compacting mortar, the compressive strength of Bacillus Licheniformis improved by 30.3 % and by adding Bacillus Cohnii in 28 days, the ion penetration value decreased. Finally, it was observed that the deposition of calcium carbonate in mortar improved compressive strength using SEM-EDS and XRD with compound polymorphisms of calcite, vaterite, quartz, and Hautirite.

Keywords: self-compacting mortar, compressive strength, bacillus licheninformis, bacteria cohnii, class-c fly ash, durability test
Grants and funding:

The authors received no financial support for the research, authorship, and/or publication of this article.

Conflicts of interest:

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Received: April 29, 2022; Revised: October 7, 2022; Accepted: September 14, 2022; Prepublished online: October 17, 2022; Published: October 26, 2022  Show citation

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Sravanthi, M., Venkateswara Rao, S., Krishnaveni, K., Lal Meenuga, V.K., & Kariveda, S. (2022). Studies on Compressive Strength Microstructural Analysis of Self-Compacting Mortar with Bacteria. Communications - Scientific Letters of the University of Zilina24(4), D183-200. doi: 10.26552/com.C.2022.4.D183-D200
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