EVALUATION OF DURABILITY AND PRACTICALITY OF STEEL DECK WITH SFRC REINFORCEMENT USING HIGH-EARLY-STRENGTH PORTLAND CEMENT

Abstract

In this study, we verified that reinforcing material using SFRC with high-early-strength portland cement and low shrinkage type mixture material for steel deck slabs of highway bridge. As a result, SFRC with high-early-strength portland cement and low shrinkage type mixture material secured compressive strength of concrete to 36.1N/mm² in curing 24 hours. The proposed SFRC is secured of military requirement. In addition, the proposed SFRC has surpassed workability for longer setting time as compared with SFRC with ultra-rapid hardening cement. Fatigue experiments have shown that the proposed SFRC suppressed increase of deflection occurring on steel deck plate. Accordingly, the proposed SFRC with high-early-strength portland cement and low shrinkage type mixture material is practical for reinforcement and pavement of steel deck.