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Use of microwave conditioning to rapidly age asphalt mixes

Mitchell, Ruth, Woodward, David and Ryan, Donal (2013) Use of microwave conditioning to rapidly age asphalt mixes. In: Airfield and Highway Pavement 2013, Los Angeles. American Society of Civil Engineers. 8 pp. [Conference contribution]

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Abstract

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.

Item Type:Conference contribution (Paper)
Faculties and Schools:Faculty of Art, Design and the Built Environment
Faculty of Art, Design and the Built Environment > School of the Built Environment
Research Institutes and Groups:Built Environment Research Institute
Built Environment Research Institute > Studies Allied to Built Environment Research (SABER)
ID Code:26383
Deposited By: Dr David Woodward
Deposited On:30 Jul 2013 15:01
Last Modified:19 Jan 2015 11:37

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