DEVELOPMENT AND APPLICATION OF HIGH-FLUIDITY AND SUPER-LOW DRYING SHRINKAGE CONCRETES FOR FAIR-FACED CONCRETE WALLS USING A NEW HYBRID ADMIXTURE

New type admixtures were developed for High-fluidity and Super-low shrinkage concretes with water-cement ratio of 40-55%. Properties fresh hardened using these studied by laboratory test. concretes, such as strength durability investigated experimentally. Furthermore, effects reducing restraining cracks verified test on drying cracking restrained concrete. More than 10% drying-shrinkage reduction was obtained super-low concrete one compared to ordinary This applied a fair-faced wall building in Hyogo.