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Reclaimed asphalt test specimen preparation assisted by image analysis

Lo Presti, D.; Hassan, N. A.; Khan, R.; Airey, G.

Authors

D. Lo Presti

N. A. Hassan

R. Khan

GORDON AIREY GORDON.AIREY@NOTTINGHAM.AC.UK
Professor of Pavement Engineering Materials



Abstract

This paper presents a laboratory investigation aimed at establishing a protocol for the production of homogeneous asphalt mixtures test specimens, incorporating reclaimed asphalt by using a gyratory compactor with coring and trimming works. Stone mastic asphalt specimens were compacted at the previously identified target densities with the final aim of obtaining specimens with a fixed and homogeneous air void distribution. A microstructural study was conducted to characterize the homogeneity in the air void distribution using X-ray computed tomography (CT) combined with image analysis techniques. The study concluded that the gyratory compactor is suitable for producing homogeneous test specimens for the specified mixtures and a set of detailed procedures has been proposed for the production of the compacted specimens and to perform the microstructural study.

Journal Article Type Article
Publication Date Aug 31, 2015
Journal Journal of Materials in Civil Engineering
Print ISSN 0899-1561
Electronic ISSN 1943-5533
Publisher American Society of Civil Engineers
Peer Reviewed Peer Reviewed
Volume 27
Issue 8
Article Number C4014005
APA6 Citation Lo Presti, D., Hassan, N. A., Khan, R., & Airey, G. (2015). Reclaimed asphalt test specimen preparation assisted by image analysis. Journal of Materials in Civil Engineering, 27(8), https://doi.org/10.1061...%29MT.1943-5533.0001012
DOI https://doi.org/10.1061/%28ASCE%29MT.1943-5533.0001012
Keywords X-ray computed tomography (CT); Image analysis; Gyratory compactor; Reclaimed asphalt; Re-Road
Publisher URL http://ascelibrary.org/doi/10.1061/%28ASCE%29MT.1943-5533.0001012
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0



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