SHRINKAGE REDUCTION PERFORMANCE AND SCALING RESISTANCE OF RC ROAD BRIDGE DECK SPECIMENS USING FLY ASH, EXPANSIVE MATERIALS AND SMALL SIZED BALLOON COMPONENT

Abstract

Focusing on shrinkage reduction effect and scaling resistance of RC road bridge deck specimens using fly ash, expansive materials and small sized balloon component, the performance was compared to that with commonly used concrete. Experiments revealed that fly ash concrete using both expansive material and small sized balloon component had compressive strength equivalent to that of commonly used concrete. Air content was 6.0％ or more. Further, it had higher scaling resistance as compared to commonly used concrete and also excellent shrinkage reducing performance. Finally, it was estimated that these improvements in performance were caused by the effect of expansive material and small sized balloon component.