Effect of Cement type and Air-entraining agent on Microbially Induced Carbonate Precipitation in Cement Paste

摘要

The effect of cement type and the air-entraining agent on microbially induced carbonate precipitation in cement paste has been studied. Results indicate that after biodeposition treatment, Sulphoaluminate cement paste behaved with a higher growth rate of compressive strength than OPC paste. Incorporation of air-entraining agent increased the growth rate of compressive strength of sulphoaluminate cement paste. Calcite was formed through microbially induced carbonate precipitation in cement pastes. Sulphoaluminate cement paste achieved a larger amount of calcite than OPC paste.