Finite Element Analysis of Self-Healing Concrete Beams Using Bacteria

Deterioration or crack formation in concrete elements is a phenomenon that cannot be easily avoided, and it has a high cost of repair. A modern technology that needs wider study is the use of the bio-precipitation of calcium carbonate using bacteria to increase a structures’ capacity. The current re...

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Bibliographic Details
Published in:Materials 2022-10, Vol.15 (21), p.7506
Main Authors: Salem, Ghada G., Galishnikova, Vera V., Elroba, S. M., Vatin, Nikolai I., Kharun, Makhmud
Format: Article
Language:English
Subjects:
Analysis
Bacteria
CAD
Calcium carbonate
Cement
Computer aided design
Concrete
Cracks
E coli
Finite element analysis
Finite element method
Investigations
Load
Mechanical properties
Nitrates
Permeability
Reinforced concrete
Self healing materials
Sulfur
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Summary:Deterioration or crack formation in concrete elements is a phenomenon that cannot be easily avoided, and it has a high cost of repair. A modern technology that needs wider study is the use of the bio-precipitation of calcium carbonate using bacteria to increase a structures’ capacity. The current research presents an analytical study on self-healing concrete beams using bacteria to enhance the beam’s capacity. A Finite Element Analysis on (ANSYS 15.0) was carried out to study the effect of the bacteria concentration (the weight of bacteria to cement weight 1%, 2%, and 3%), the type of bacteria (Bacillus subtilis, E. coli, and Pseudomonas sps.), and the loading (a one-point load, a two-point load, and a distributed load on four points) on concrete beams. Two beams were chosen from previous experimental research and simulated on the ANSYS before carrying out our parametric study to verify the validity of our simulation. Following this, our parametric study was carried out on eight beams; each beam was loaded gradually up to failure. The results show that the optimum type of bacteria was the Bacillus subtilis, and that the bacteria concentration of 3% for Bacillus subtilis can increase the beam’s capacity by 20.2%. Also, we found that distributing the load to four points led to the increase of the beam’s capacity by 74.5% more than the beam with a one-point load.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma15217506