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Research Article

Crack healing and flexural behaviour of self-healing concrete influenced by different bacillus species

Chereddy Sonali Sri Durga1Chava Venkatesh1T. Muralidhararao1Ramamohana Reddy Bellum2

1Department of Civil Engineering, CVR College of Engineering, Hyderabad, 501510.

2Department of Civil Engineering, Aditya Engineering College, Aditya Engineering College (Autonomous), Aditya Nagar, ADB Road, Surampalem-pin:533437, East-Godavari District, Andhra Pradesh, India.



Bacillus species;

Crack healing;

Cell concentration;

Flexural strength;

Ultra-sonic pulse velocity

The main aim of this investigation is to determine the influence of Bacillus species on the crack healing ability and flexural strength of concrete. In this regard, four bacillus species, such as "Bacillus halodurans (BH), Bacillus cereus (BC), Bacillus licheniformis (BL), and Bacillus subtilis (BS), and two bacterial cell concentrations are selected (viz., 108 and 109 cells/ml of water), and the concrete specimens are cracked with a 65% stress level concentration. To identify the crack healing ability of selected bacillus species, three different curing conditions are adopted: calcium lactate, water, and ambient curing conditions. The ultrasonic pulse velocity test (UPV) has been conducted to identify the crack healing ability of the selected bacillus species. From the results, calcium lactate-based cured concrete specimens showed better UPV values and crack healing ability. whereas Bacillus halodurans (BH) effectively filled the crack with calcite precipitation, which is the reason for 90% of crack healing ability and the high flexural strength recovery compared to other selected bacillus species. There is not much difference observed between the bacteria with cell concentrations of 109 and 108; however, 109 has a high healing ability and recovers flexural strength.

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20/04/2024 Collaboration for HSTD-2024Editorial Board of our journal and Organizing Committee of the III. International Conference on High-Speed Transport Development (HSTD) have agreed to collaborate. Extended versions of the selected papers from the conference will be published in our journal. For more see Events.

20/04/2024 Collaboration for DSL2024-SS1Editorial Board of our journal and Organizing Committee of the DSL2024 Fluid Flow, Energy Transfer & Design (SS1) have agreed to collaborate. Extended versions of the selected papers from the session will be published in our journal. For more see Events. .

8/12/2023 Special Issue: Embark on a journey of innovation with the journal of Research on Engineering Structures and Materials as we unveil a compelling opportunity for contributors in our upcoming special issue, "Design, Analysis, and Manufacturing of Composite Vehicle Structures." Led by distinguished Guest Editors Liubov Gavva and Oleg Mitrofanov from Moscow Aviation Institute. For more info see the link.

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2023 Reviewer Awards:

Please, visit Reviewer Awards section for the winners of the 2022 RESM reviewer awards.

2023 Best Paper Award:

The paper authored by Ferzan Fidan, Naim Aslan, Mümin Mehmet Koç entitled as “Morpho-structural and compressive mechanical properties of graphene oxide reinforced hydroxyapatite scaffolds for bone tissue applications” is awarded.

2023 Most Cited Paper Award:

The paper authored by Ercan Işık, Ehsan Harirchian, Hüseyin Bilgin, Kirti Jadhav entitled as “The effect of material strength and discontinuity in RC structures according to different site-specific design spectra" is awarded.


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