Self-healing performance of asphalt mixtures through heating fibers or aggregate

摘要

In this paper, two different designs of self-healing asphalt mixtures were promoted, the asphalt mixtures were healed through heating fibers or aggregate respectively. Induction heating and microwave heating were applied respectively to provide healing atmospheres. The thermal conductivity and temperature raising tests were conducted to measure the heating performance of those two self-healing asphalt mixtures. Infrared images were used to demonstrate the temperature field of asphalt specimens during heating. Cyclic fracture-healing test with three-point bending method was recorded to investigate the healing performance of the designed asphalt mixtures.