Effect of halophilic bacteria on reducing chloride-ion concentration in mortars

The present pioneering study examines the significance and limitations of biological mortars originally developed to enhance the salt damage resistance of concrete. Three strains of halophilic bacterium are isolated considering the decomposition mechanism of bacteria for chloride compounds in the cement matrix, thereby reducing the chloride ion concentration in the mortar. Test results showed that Halomonas venusta exhibited a good potential in reducing the chloride-ion concentration in mortars exposed to salt attacks, indicating a lower chloride-ion diffusion coefficient and lower amounts of Friedel's salt by consuming the chloride ions as an energy source for its activity and growth.

Automated summary

This pioneering study examines the significance and limitations of biological mortars, which were originally developed to enhance the salt damage resistance of concrete. Three strains of halophilic bacteria were isolated, and the test results showed that Halomonas venusta exhibited potential in reducing chloride-ion concentration in mortars exposed to salt attacks by consuming chloride ions as an energy source.