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Advances in Materials Science and Engineering - Volume 2014 2014, Article ID 507082, 11 pages -

Research Article

Nottingham Transportation Engineering Centre, University of Nottingham, NG7 2RD, UK

University of Engineering and Technology, Peshawar 25000, Pakistan

Universiti Teknologi Malaysia, 81310, Malaysia

De Montfort University, Leicester LE1 9BH, UK

Received 7 May 2013; Accepted 22 October 2013; Published 14 January 2014

Academic Editor: Liyuan Sheng

Copyright © 2014 Davide Lo Presti et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper presents a study on the production of asphalt test specimens in the laboratory containing reclaimed asphalt. The mixtures considered were stone mastic asphalt concrete mixtures containing up to 30% of reclaimed asphalt. Specimens were compacted to the reference density obtained from the Marshall mix design. Gyration compaction method was used for preparing specimens for the experimental programme, while coring and cutting methods and X-ray computed tomography CT were used to investigate the change in properties within the specimens and to validate the selected methodology. The study concluded that gyratory compaction is suitable to produce homogeneous test specimens also for mixtures containing high amount of reclaimed asphalt. Nevertheless, preliminary trials for each material are mandatory, as well as final coring and trimming of the specimens due to side effects.





Autor: Davide Lo Presti, Rawid Khan, Norhidayah Abdul Hassan, Gordon Airey, and Andrew Collop

Fuente: https://www.hindawi.com/



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