Effects of preheating conditions on performance and workability of hot in-place recycled asphalt mixtures

Pavement preheating is of great significance for hot in-place recycling technology. In this study, different preheating temperatures (100 °C, 120 °C and 150 °C) and heating times (60 min, 120 min and 180 min) were set to simulate different preheating conditions for recycled asphalt pavement materials. Rutting tests, low-temperature bending beam tests, and freeze-thaw tests were conducted to investigate the effect of the different heating …