Study on the compressive strength of polypropylene fibre reinforced M20 grade self-healing concrete using a novel microbial technique microbial induced calcite precipitation

• Main Authors: Manojkumar, Ch, Ramesh, B., Macrin, Danie
• Format: Conference Proceeding
• Language: English
• Subjects: Bacteria; Bioinformatics; Calcite; Compressive strength; Fiber reinforced concretes; Fiber reinforced polymers; Glass fibers; Laboratories; Microorganisms; Polypropylene; Reinforced concrete; Self healing materials; Self-compacting concrete
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/5.0173930

The aim of the study is to quantify the compressive strength of polypropylene fiber reinforced self healing concrete using a novel microbial application MICP (microbial induced calcite precipitation) technique. Materials and Methods: The sample size was calculated using clincalc software. The total sample size for two groups was 10 at a power of 95% and alpha value was 0.05. Two groups consisting of 18 samples were prepared for the collection of data. One group is prepared with the addition of polypropylene fibre and the other group is without fiber. Bacteria Bacillus subtilis was prepared in the bioinformatics laboratory using a strain brought from the hi media laboratories. Results: The mean compressive strength of glass fiber reinforced self compacting bacterial concrete was 32.7 N/mm2 and the compressive strength of self compacting concrete without fiber was 27.64 N/mm2. Independent sample t-test was performed to analyse the results. Standard deviation for polypropylene fiber reinforced bacterial concrete was 1.50363. Significance of the events was p=0.098 (p>0.05). The polypropylene fiber reinforced self healing concrete had more strength compared to bacterial concrete without fibres. Percentage increase in strength of polypropylene fiber reinforced concrete was 18.56%.