Reclaimed asphalt test specimen preparation assisted by image analysis

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

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.

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), Article C4014005. https://doi.org/10.1061/%28ASCE%29MT.1943-5533.0001012

• Journal Article Type: Article
• Acceptance Date: Dec 27, 2013
• Online Publication Date: Jan 2, 2014
• Publication Date: Aug 31, 2015
• Deposit Date: Feb 20, 2017
• Publicly Available Date: Feb 20, 2017
• 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
• 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
• Public URL: https://nottingham-repository.worktribe.com/output/758286
• Publisher URL: http://ascelibrary.org/doi/10.1061/%28ASCE%29MT.1943-5533.0001012
• Contract Date: Feb 20, 2017