The performance evaluation of protection barriers in bacterial self-healing mortar

The early age microcracking is a significant problem in concrete structures resulting increased permeability and decreased durability. previous work showed that Sporasarcina pasteurii cells immobilized on natural minerals such as bentonite, diatomaceous earth, sepiolite, pumice effectively remediated early-age microcracks the cementitious systems by triggering microbial-induced calcite precipitation (MICP). This promising approach can solve shrinkage cracking systems. Therefore, it essential to assess impact of self-healing additives drying shrinkage. study investigates influence mineral-based biological capacity cement-based mortar possible cracks if any occur. To achieve this goal, free control (containing only minerals) bacterial bio-based additive) samples were measured based ASTM 596-18 norms. Moreover, performance assessment developed was done determining compressive strength initial setting time mortar.