Evaluation of fatigue durability and effect of adhesive by running wheel fatigue test of precast replacement RC slabs with filling part at width direction

Abstract

This study evaluated the fatigue durability of the precast replacement RC slab bridges arrayed in parallel with the width direction by the wheel load running fatigue test. The experimental results showed that the equivalent number of cycles of specimens with the filling part at the affected bending and shear was reduced to 0.60 and 0.82 times, respectively, as compared with the standard RC slab. In addition, the equivalent number of cycles of specimens with the adhesive applied to the roughening surface of filling members were 0.95 times and 1.01 times, respectively, as compared with the standard RC slab. This experiment yields that applying adhesive contributes to improving fatigue durability. Therefore, we propose the use of adhesives at the interface between the precast slab and the roughening surface of the filling part in the installation of the actual bridge.