• SREELAKSHMI S KUMAR
• CHITHRA C J

Concrete, a widely used and indispensable construction material, is prone to cracking, which significantly reduces its service life and necessitates costly replacements. Self-healing materials possess the unique ability to autonomously repair minor damages and cracks, thereby preventing member deterioration. Self-healing concrete employs specific constituents to mend cracks without external intervention. This study explores two types of self-healing concrete: one utilizing a crystalline admixture and the other employing the bacteria Bacillus subtilis. A comparison is made between these concretes in terms of their properties and healing capabilities. The crystalline admixture is incorporated into the concrete at percentages of 1%, 2%, and 3%, while Bacillus subtilis bacteria are added at 5%, 10%, and 15%. Among the different proportions, the concrete with 2% crystalline admixture exhibited the highest strength. The research involves conducting tests to evaluate compressive strength, split tensile strength, flexural strength, acid resistance, and water penetration. To assess the healing properties, cracks are intentionally induced in the casted concrete specimens. Ultimately, this study aims to compare the properties of each concrete grade and evaluate the healing capacity of the specimens.

Concrete , self healing concrete , bacterial concrete , bacillus subtilis , crystalline admixture

"THE COMPARATIVE ANALYSIS OF THE PROPERTIES OF SELF HEALING CONCRETE USING BACTERIA AND CRYSTALLINE ADMIXTURE", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 5, page no.l708-l714, May-2023, Available :http://www.jetir.org/papers/JETIR2305B97.pdf

"THE COMPARATIVE ANALYSIS OF THE PROPERTIES OF SELF HEALING CONCRETE USING BACTERIA AND CRYSTALLINE ADMIXTURE", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 5, page no. ppl708-l714, May-2023, Available at : http://www.jetir.org/papers/JETIR2305B97.pdf