Effect of vehicle-induced vibrations on early-age concrete during bridge widening

•This study focused on the effect of vehicle-induced vibrations on fresh concrete.•A laboratory program including field test was performed.•120 concrete specimens were used to assess the attainable compressive and bond strengths.•Two test variables were considered: the peak particle velocity and vibration duration.•Some recommendations suggested based on the results of this study. The purpose of this study was to conduct laboratory experiments that considered the effect of vehicle-induced vibrations on fresh concrete to determine the attainable concrete strength for bridge widening. A laboratory experimental program was carried out, where 120 concrete specimens were used in total to measure the compressive and bond strengths. The experiment results showed that vehicle-induced vibration does not need to be considered a serious risk to the concrete strength if the vibration duration is 6h or less and the peak particle velocity is 0.3cm/s or less.