Effect of Coloring Pigment on Asphalt Mixture Performance: Case for Use in Ontario
Located north of Toronto, Ontario, York Region is a thriving community which is proactive in promoting efficient transportation. To meet its rapidly increasing need for public transit, York Region has used a combination of coloured aggregate and red pigment for its dedicated Bus Rapid Transit (BRT) dedicated lanes. The intent is that the use of coloured asphalt is intended to improve level of safety through enhanced visibility. The dedicated lanes are located along the three most heavily travelled roads in the region; Yonge Street, Highway 7, and Davis Drive. The research presented in this paper relates to an on-going partnership between the Centre for Pavement and Transportation Technology (CPATT) at the University of Waterloo, York Region, and Metrolinx. This paper presents some of the background related to how coloured asphalt can be used in various transportation applications to achieve various technical and social benefits. It also highlights some of the material characterization test results for the Superpave 12.5 mm coloured asphalt surface mixtures including the dynamic modulus testing, Thermal Stress Restrained Specimen Test, and flexural fatigue testing. Plant-produced Coloured Hot Mix Asphalt (CHMA) as well as laboratory-fabricated samples are being evaluated. Overall observations suggest that pigmentation had affected the level of resistance to fatigue cracking, but large variation was observed in fatigue results that requires further investigation of testing procedure. No affect was observed in overall stiffness of the mixture at higher and lower temperatures.
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Supplemental Notes:
- This paper was sponsored by TRB committee AFK30 Standing Committee on Characteristics of Nonasphalt Components of Asphalt Paving Mixtures. Alternate title: Effect of Colouring Pigment on Asphalt Mixture Performance: A Case for Use in Ontario.
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Corporate Authors:
500 Fifth Street, NW
Washington, DC United States 20001 -
Authors:
- Varamini, Sina
- Tighe, Susan L
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Conference:
- Transportation Research Board 95th Annual Meeting
- Location: Washington DC, United States
- Date: 2016-1-10 to 2016-1-14
- Date: 2016
Language
- English
Media Info
- Media Type: Digital/other
- Features: Figures; Photos; References; Tables;
- Pagination: 11p
- Monograph Title: TRB 95th Annual Meeting Compendium of Papers
Subject/Index Terms
- TRT Terms: Asphalt mixtures; Bus lanes; Color; Fatigue cracking; Highway safety; Hot mix asphalt; Pigments; Red; Stiffness; Visibility
- Geographic Terms: Ontario (Province)
- Subject Areas: Highways; Materials; Pavements; I31: Bituminous Binders and Materials;
Filing Info
- Accession Number: 01590193
- Record Type: Publication
- Report/Paper Numbers: 16-3889
- Files: TRIS, TRB, ATRI
- Created Date: Feb 14 2016 4:01PM