Effect of Ten Commercial Warm Mix Additives on the Quality and Durability of Cold Lake Asphalt Cement
This paper discusses the effects of widely used warm mix additives (WMA) on asphalt binder properties. Soft Cold Lake asphalt cement was modified with ten different WMA. Materials were aged according to a standard rolling thin film oven (RTFO) protocol followed by 20 hours of pressure vessel aging (PAV) as well as PAV treatment for longer times, in thinner films, and in the presence of moisture. Binder quality was determined according to American Association of State and Transportation Highway Officials method M320 as well as dynamic shear characterization. Durability was assessed from changes in properties after additional conditioning at high temperature in the PAV and at low temperature in the bending beam rheometer. It was found that wax-based WMA-modified binders transitioned to a gel-type state more readily upon additional conditioning.
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Supplemental Notes:
- This paper was sponsored by TRB committee AFK20 Characteristics of Asphalt Materials. Alternate title: Effect of 10 Commercial Warm-Mix Additives on Quality and Durability of Cold Lake Asphalt Cement.
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Corporate Authors:
500 Fifth Street, NW
Washington, DC United States 20001 -
Authors:
- Hesp, Simon A M
- Johnson, Kelli-Anne N
- McEwan, Ross
- Kumar Paul Samy, Senthil
- Ritchie, Scott
- Thomas, Michaela
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Conference:
- Transportation Research Board 93rd Annual Meeting
- Location: Washington DC
- Date: 2014-1-12 to 2014-1-16
- Date: 2014
Language
- English
Media Info
- Media Type: Digital/other
- Features: Figures; References; Tables;
- Pagination: 15p
- Monograph Title: TRB 93rd Annual Meeting Compendium of Papers
Subject/Index Terms
- TRT Terms: Aging (Materials); Asphalt cement; Binder content; Durability; Pressure vessels; Rheological properties; Warm mix paving mixtures
- Uncontrolled Terms: Rolling thin film oven test
- Subject Areas: Highways; Materials; I31: Bituminous Binders and Materials;
Filing Info
- Accession Number: 01515099
- Record Type: Publication
- Report/Paper Numbers: 14-0825
- Files: TRIS, TRB, ATRI
- Created Date: Feb 21 2014 3:16PM