[1253] APPLICABILITY OF BIO-BASED MATERIALS TO REPAIR WATER LEAKAGE OF CONCRETE
キーワード：bio-based materials, Field Emission Scanning Electron Microscopy (FE-SEM), Fourier Transformed Infra-Red spectroscopy (FT-IR), repair leakage
This paper presents applicability of bio-based materials comprising dry yeast, glucose, and calcium acetate to repair water leakage of concrete. Water permeability test is conducted to evaluate sealing efficiency. FT-IR and FE-SEM analysis show the crystal polymorph observed in the precipitation is calcium carbonate. As the result of permeability tests carried out using leakage specimens, for crack width 0.2 mm, the liquid-based repair materials could decreasing water leakage to zero after 96 hours.