Binder adhesion testing using the bitumen bond strength test: state of the art

One of the major failure mechanisms of surface seals is ravelling which takes place when the binder-aggregate bond is weak and broken by the forces generated by traffic. This can happen immediately after the construction phase (maximisation of sealwork) and in time during service life. To prevent ravelling the need for a relatively simple and inexpensive test was identified for evaluating bitumen and bitumen emulsion bond strength development over time, as well as binder-aggregate compatibility. Such a test should also become part of the development of performance-based specifications. Stellenbosch University takes part in the SANRAL project on “Maximisation of Sealwork”. This synthesis report focuses on extension of the reported work on bitumen-emulsions in 2010 with hot bitumen and the influence of binder types, aggregate types, curing times, pre-coating. First a short description is given of the BBS test and the research programs. Test results are given to show the influence of several parameters. A discussion of the results is followed with the focus on what has been learned and what information can be taken forward to practice. It is concluded that the bitumen bond strength test can give useful results, but that the test set up has to improve in order to reduce variability.

• Record URL:
  http://arrbknowledge.com
• 
• Authors:
  • Jenkins, K
  • van de Ven, M
  • Greyling, A H
  • Constable, B
  • Abrahams, S
  • Stander, A
  • Lombard, L -
• Conference:
  • AAPA International Flexible Pavements Conference, 15th, 2013, Brisbane, Queensland, Australia
• Publication Date: 2013-9

Language

• English

Media Info

• Pagination: 17p
• Monograph Title: Delivering new age solutions: 15th AAPA International Flexible Pavements Conference, 22-25 September, Royal International Conference Centre, Brisbane

Subject/Index Terms

• TRT Terms: Adhesion; Aggregates; Binders; Bituminous materials; Pavement performance; Pavements; Tests for suitability, service and quality
• Uncontrolled Terms: Pavement technology
• Geographic Terms: South Africa
• ATRI Terms: Adhesion; Aggregate; Binder; Pavement performance; Pavement testing
• ITRD Terms: 5297: Ravelling
• Subject Areas: Highways; Pavements; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01503289
• Record Type: Publication
• Source Agency: ARRB
• Files: ITRD, ATRI
• Created Date: Jan 6 2014 10:56AM