Soil consolidation by biocalcification
Soletanche Bachy is developing Biocalcis®– a biotechnology capable of copying a natural phenomenon – for its worksites.
This innovative biotechnology emulates natural calcification processes to cement soil in situ while maintaining its initial porosity. A number of bacteria present in the natural environment are known to precipitate a variety of calcium carbonate minerals that build up over centuries to form calcareous concretions with excellent mechanical properties.
Sporosarcina pasteurii bacteria are non-pathogenic and environmentally harmless. They are cultivated using an industrial protocol developed by Soletanche Bachy. Calcite precipitation achieved by causing the bacteria to react with a calcifying nutrient solution.