ABSTRACT
This study investigates the deformation behavior of reinforced concrete (RC) bridge decks experiencing expansions due to alkali silica reactions (ASR). Based on the parametric analyses for the effect of temperature on the reaction coefficient, it was found that the long-term free expansions of specimens can be reproduced using a multi-scale calculation scheme. The scheme was used to simulate expansion of actual RC bridge decks on steel girders, and the simulation results from the three-dimensional deformations were in good agreement with the experimental results. The quantitative predictions of expansion strains still need improvement. Hence, further investigation into the effective gel volume under three-dimensional confinement is required to precisely capture the long-term expansion behaviors of RC decks.
