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Laboratory prediction of early life asphalt surfacing properties

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Friel, Shaun, Woodward, David, Woodside, Alan and Fitzpatrick, Shay (2010) Laboratory prediction of early life asphalt surfacing properties. In: ITRN Conference, University College Dublin, Ireland. UCD. 8 pp. [Conference contribution]

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Abstract

This paper summarises the findings of a laboratory investigation to assess whether it is possible to rank the relative performance of 10 different asphalt surfacing materials made with the same aggregate. The Road Test Machine was used to simulate controlled trafficking conditions. The change in wet skid resistance and texture depth was determined at regular intervals during testing. It was found that wet skid resistance increases as nominal stone size decreases for the AC and SMA mixes and decreases with increasing application of 20mm chippings for the HRA. Texture depth increases as the nominal stone size increased. The AC mixes were least durable and suffered most from surface ravelling in the later stages of testing. The SMA mixes were more durable with the HRA having the best durability. The resulting data suggests that it is possible to improve understanding of the complex inter- relationships between asphalt mix properties such as asphalt type, nominal aggregate size, skid resistance and texture depth and how they develop with time. The testing protocols offer a means of optimising the sustainable development of asphalt surfacing materials

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 > Centre for Sustainable Technologies (CST)
ID Code:19651
Deposited By:Dr David Woodward
Deposited On:19 Apr 2012 11:59
Last Modified:19 Apr 2012 11:59

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