Use of microwave conditioning to rapidly age asphalt mixes

Ruth Mitchell, David Woodward, Donal Ryan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

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.
LanguageEnglish
Title of host publicationUnknown Host Publication
Place of PublicationProceedings of the 2013 Airfield and Highway Pavement Conference
Pages1211-1218
Number of pages8
Publication statusPublished - 2013
EventAirfield and Highway Pavement 2013 - Los Angeles
Duration: 1 Jan 2013 → …

Conference

ConferenceAirfield and Highway Pavement 2013
Period1/01/13 → …

Fingerprint

Asphalt
Asphalt mixtures
Aging of materials
Microwaves
Stiffness
Microwave heating
Recovery

Cite this

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.
Mitchell, Ruth ; Woodward, David ; Ryan, Donal. / Use of microwave conditioning to rapidly age asphalt mixes. Unknown Host Publication. Proceedings of the 2013 Airfield and Highway Pavement Conference, 2013. pp. 1211-1218
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Mitchell, R, Woodward, D & Ryan, D 2013, Use of microwave conditioning to rapidly age asphalt mixes. in Unknown Host Publication. Proceedings of the 2013 Airfield and Highway Pavement Conference, pp. 1211-1218, Airfield and Highway Pavement 2013, 1/01/13.

Use of microwave conditioning to rapidly age asphalt mixes. / Mitchell, Ruth; Woodward, David; Ryan, Donal.

Unknown Host Publication. Proceedings of the 2013 Airfield and Highway Pavement Conference, 2013. p. 1211-1218.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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N2 - 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.

AB - 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.

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Mitchell R, Woodward D, Ryan D. Use of microwave conditioning to rapidly age asphalt mixes. In Unknown Host Publication. Proceedings of the 2013 Airfield and Highway Pavement Conference. 2013. p. 1211-1218