Effectiveness of water-bearing and anti-stripping additives in warm mix asphalt technology

Effects of varying dosages of a water-bearing warm mix asphalt (WMA) additive, Advera®, on a performance grade (PG) binder, PG 64-22, were evaluated. The effectiveness of an amine-based liquid anti-stripping (AS) agent, AD-here® HP Plus, on the Advera®-modified binder was also studied. Furthermore, the effect of reduced oxidative ageing on Advera®-modified binder was investigated. The optimum dosage of Advera® was found to be 6% (by the mass of the binder), which did not alter the base binder's PG. A fairly small amount (0.5%) of the AS agent was found to be effective in increasing the fatigue and low temperature resistances of the Advera®-modified binder. A notable reduction in the high PG temperature was observed when the Advera®-modified binder was aged (short term) at 135°C, and this observation is in agreement with the test results of the Advera® mix, which showed excessive rutting and moisture susceptibility. Test data from a rotational viscometer showed no reduction in the viscosity and the production temperature of the Advera® mix thereof, indicating the need of an alternate laboratory test method to simulate the working mechanism of Advera®. The findings of this study are expected to enhance the inventory of rheological database and help in implementing WMA mixes in Oklahoma and elsewhere.

• Record URL:
  https://doi.org/10.1080/10298436.2011.616588
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/44544515
• Supplemental Notes:
  • Abstract reprinted with permission from Taylor & Francis.
• Authors:
  • Hossain, Zahid
  • Zaman, Musharraf
  • O'Rear, Edgar A
  • Chen, Dar-Hao
• Publication Date: 2012-10

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 424-432
• Serial:
  • International Journal of Pavement Engineering
  • Volume: 13
  • Issue Number: 5
  • Publisher: Taylor & Francis
  • ISSN: 1029-8436
  • Serial URL: http://www.tandf.co.uk/journals/titles/10298436.html

Subject/Index Terms

• TRT Terms: Antistrip additives; Asphalt additives; Bituminous binders; Rutting; Warm mix paving mixtures
• Identifier Terms: Advera
• Uncontrolled Terms: Performance grade; Zeolite
• Geographic Terms: Oklahoma
• Subject Areas: Highways; Materials; Pavements; I31: Bituminous Binders and Materials; I33: Other Materials used in Pavement Layers;

Filing Info

• Accession Number: 01446337
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 17 2012 4:50PM