Literature shows that microwave conditioning has been used to age bitumen. However, there has been less research using microwaves to accelerate the aging of asphalt mixtures. This paper considers the use of microwave heating as a means of rapidly aging gyratory prepared test specimens. Indirect Tensile Stiffness Modulus, assessed using the Nottingham Asphalt Tester (NAT), was used to assess its affect. It was found that microwave conditioning had a significant effect on retained stiffness. Although they went through a cycle of recovery after initial exposure, there was a longer term reduction in retained stiffness due to micro-wave conditioning suggesting that this method may be a simple and rapid way to accelerate the aging of asphalt mixtures.
|Title of host publication||Unknown Host Publication|
|Place of Publication||Proceedings of the 2013 Airfield and Highway Pavement Conference|
|Publisher||American Society of Civil Engineers|
|Number of pages||8|
|Publication status||Published - 2013|
|Event||Airfield and Highway Pavement 2013 - Los Angeles|
Duration: 1 Jan 2013 → …
|Conference||Airfield and Highway Pavement 2013|
|Period||1/01/13 → …|
Mitchell, R., Woodward, D., & Ryan, D. (2013). Use of microwave conditioning to rapidly age asphalt mixes. In Unknown Host Publication (pp. 1211-1218). Proceedings of the 2013 Airfield and Highway Pavement Conference: American Society of Civil Engineers.