Experiments such as microbial activation culture, subculture selection, and fire damage repair of cement mortar specimens were conducted to investigate the repairing effect Sporosarcina pasteurii a agent for fire-damaged cracks in specimens. In addition, multi-scale parameters compressive strength chloride ion migration coefficient before after restoration compared. The mineralization technolog...

This research was carried out to evaluate the relationship between incorporation of calcite precipitation bacteria, sporosarcina pasteurii using calcium lactate as nutrient source and properties calcined clay limestone powder blended self-compacting concrete. Ten mixes were designed designated S0 S9 with control (without bacteria nutrient) S1 at varying concentrations effect cell density concen...

Chronic kidney disease may progress to end-stage renal disease, which requires dialysis or kidney transplantation. No generally applicable therapies to slow progression of renal disease are available. Bacteriotherapy affords a promising approach to mitigate uremic intoxication by ingestion of live microbes able to catabolize uremic solutes in the gut. The present study evaluates the nonpathogen...

With lower calcination temperature, reactive magnesia cement (RMC) can be a potential alternative to the Portland cement. However, RMC concrete requires accelerated carbonation curing from external sources which greatly hinder wider applications of RMC. This study proposed bacteria-based method for strength gain through internal carbonation. Sporosarcina pasteurii, urea, and yeast extract were ...

The principle of sustainable development imposes an obligation on societies to manage natural resources rationally and care for the quality environment, by, among other things, reducing CO2 emissions. Alternative ways stabilising building substrates by increasing their shear strength (cu) are increasingly being sought. This paper presents how microorganisms can influence cu thus load-bearing ca...

Contamination by radioactive strontium ((90)Sr) is a significant environmental problem. Ureolytically driven calcium carbonate precipitation has been proposed for use in geotechnical engineering for soil remediation applications. In this study, 68 ureolytic bacterial strains were newly isolated from various environments. Of these, 19 strains were selected based on ureolytic activity shown when ...