Asphalt-rubber gap-graded mixture design practices: a state-of-the-art research review and future perspective

The use of asphalt-rubber gap-graded (AR-Gap) mix as a pavement material has gained importance due to its environmental benefits and enhanced performance. This paper reviews the current state-of-the-art pertinent to AR-Gap mix design research and practice. The various mix design practices of AR-Gap mixes adopted by various agencies were summarised. Furthermore, the performance characteristics of AR-Gap mixes such as drain-down, moisture susceptibility, permanent deformation, and fatigue cracking were also documented. The field performances of AR-Gap pavements were also reviewed. Due to an increased use of AR-Gap as a pavement material owing to its several benefits, there exists an extensive scope for further research to understand the material better, which will make it a promising sustainable pavement material in future. Furthermore, considering that AR-Gap mix design and construction technologies are yet to be fully implemented worldwide, the present work aims to be an up-to-date reference to provide benefits and issues associated with the AR-Gap mixes. However, based on the various research questions emanating out of the review process, it was adjudged that there is still further scope for advancing the current state-of-the-art pertaining to the AR-Gap mix design, and the contribution of rubber inclusions in assisting the mix’s augmented performance.

• Record URL:
  https://doi.org/10.1080/14680629.2016.1182060
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/14680629
• Supplemental Notes:
  • Abstract reprinted with permission of Taylor & Francis.
• Authors:
  • Venudharan, Veena
  • Biligiri, Krishna Prapoorna
  • Sousa, Jorge B
  • Way, George B
• Publication Date: 2017-5

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 730-752
• Serial:
  • Road Materials and Pavement Design
  • Volume: 18
  • Issue Number: 3
  • Publisher: Taylor & Francis
  • ISSN: 1468-0629
  • EISSN: 2164-7402
  • Serial URL: http://www.tandfonline.com/loi/trmp20

Subject/Index Terms

• TRT Terms: Asphalt rubber; Crumb rubber; Gap grading; Mix design; Pavement performance; State of the art
• Subject Areas: Design; Highways; Materials; Pavements;

Filing Info

• Accession Number: 01635436
• Record Type: Publication
• Files: TRIS
• Created Date: May 25 2017 1:56PM