Laboratory mixture ageing protocol for RAP production

To provide further support to laboratory research on recycling, it is necessary to have access to recyclable materials. The easiest way might be to take reclaimed asphalt pavement (RAP) from existing roads. However, in most cases it is difficult to know the entire historical data, and experience has shown a wide scattering for binder content and binder characteristics. For research purposes, it appeared crucial to ensure better control of all the characteristics. The objective of this study is related to the development of an ageing protocol for asphalt mixtures to be used in the laboratory for production of materials "as RAP" in sufficient quantity for further laboratory investigation. To date no standard procedure exists for preparing aged mixtures. The targets for this work were to correlate the results with those obtained from the binder ageing process. At the same time, additional information was also gathered about the effect of asphalt ageing in terms of rheological behaviour. The protocol thus defined during this study shows a good correlation for long-term ageing and, to a lesser extent, for short-term ageing. However this protocol has to be seen as a proposal and to be challenged with further investigations. For the covering abstract see ITRD E157233

• Authors:
  • POROT, L
  • BOBRISOW, L
• Publication Date: 2008

Language

• English

Media Info

• Pagination: 8p
• Serial:
  • PROCEEDINGS OF THE 4TH EURASPHALT AND EUROBITUME CONGRESS HELD MAY 2008, COPENHAGEN, DENMARK
  • Publisher: EUROPEAN ASPHALT PAVEMENT ASSOCIATION (EAPA)

Subject/Index Terms

• TRT Terms: Aging (Materials); Binder content; Bituminous mixtures; Mix design; Recycling; Rheology; Tests
• ITRD Terms: 5292: Ageing; 4929: Binder content; 4967: Bituminous mixture; 4714: Mix design; 4573: Recycling (mater); 5442: Rheology; 6255: Test
• Subject Areas: Design; Environment; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01174533
• Record Type: Publication
• Source Agency: TRL
• Files: ITRD
• Created Date: Sep 30 2010 11:14AM