Analysis of cementitious matrices self-healing with bacillus bacteria

Abstract Bacterial solutions have been studied to promote self-healing of cementitious matrices, however, the concentration this varied between studies. Consequently, objective study was evaluate potential different concentrations Bacillus subtilis AP91 encapsulated in expanded perlite (EP). Visual examination and capillary absorption water measured over time. Test samples were also subjected strength resistance tests. The physiochemical properties EP his distribution on matrix evaluated. There no observable trend effect solution width crack healed. However, affected quantity length fissures Capillary decreased as healed while significant changes regardless concentration. Results indicated that provided suitable encapsulation bacterial there is an adequate capsules matrix.