Evaluation of Curing Effects on Bitumen Emulsion-Based Cold In-Place Recycling Mixture Considering Field-Water Evaporation and Heat-Transfer Conditions

The strength growth of a bitumen emulsion-based cold in-place recycling asphalt mixture (BE-CIR) is time-dependent and time-consuming due to the addition water. There great difference between curing conditions specification in laboratory situ conditions, which often leads discrepancy results lab specimens field cores. main objective this paper evaluate effect on BE-CIR considering field-water evaporation heat-transfer conditions. Four different methods were designed by using combinations waterproof layers, heat insulation variable temperature modes. variations indexes, moisture content, air void, indirect tensile (ITS) with time tested, mutual influence these indicators was analyzed. Furthermore, samples compared Testing show that performance significantly from no treatment, manifested as higher content lower void ITS under same time. internal factor affecting variation especially first day. has strong linear relationship content. Moisture showed similar trends could be divided into two stages. Taking cores benchmark, it can concluded condition should considered setting indoor methods, while transfer not.