PERFORMANCE OF 18 BITUMINOUS TEST SECTIONS ON A MAJOR URBAN FREEWAY DURING 11 YEARS OF SERVICE
This paper summarizes the results of a field trial conducted on one of the most heavily trafficked roads in North America, Highway 401, which carried some 250,000 vehicles in average daily traffic (ADT) in 1985. The trial involved 18 test sections representing a comprehensive range of asphalt surface course mixes. Mix designs ranged from sand mix to high-stone-content mixes of various materials and compositions. The conditions of the test sections were monitored periodically for 11 yr, during which samples were obtained for laboratory testing and analysis. Although the primary objective of this study was to find out which mix designs would most improve the frictional characteristics of urban freeways, other parameters relating to material properties and performance of the mix designs, and their various relationships, were also evaluated. The evaluation of these test sections led to formation of policies regarding the use of high-quality asphalt mixes on Ontario highways. All the test sections performed better than expected for single-course thin overlays on concrete pavement under heavy traffic. Open and dense mixes performed equally well. It was found that, for optimum friction characteristics for high-speed roads, a surface must possess sufficient macrotexture for bulk surface water drainage and sufficient microtexture for penetrating the remaining thin-water film in the contact area. To design mixtures with these properties, the coarse aggregate content should be set above 50 and 60 percent for dense and open friction-course mixes, respectively. Good-quality, polish-resistant aggregate should be used for both the coarse and fine aggregates.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/0309048117
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Supplemental Notes:
- This paper appears in Transportation Research Record No. 1217, Asphalt Construction, Premature Rutting, and Surface Friction Courses. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
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Authors:
- Tam, K K
- Raciborski, R
- Lynch, D F
- Publication Date: 1989
Media Info
- Features: Figures; References; Tables;
- Pagination: p. 65-79
- Monograph Title: Asphalt construction, premature rutting, and surface friction courses
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Serial:
- Transportation Research Record
- Issue Number: 1217
- Publisher: Transportation Research Board
- ISSN: 0361-1981
Subject/Index Terms
- TRT Terms: Asphalt mixtures; Average daily traffic; Bituminous pavements; Coarse aggregates; Condition surveys; Field tests; Fine aggregates; Freeways; Friction; Laboratory tests; Macrotexture; Microtexture; Mix design; Overlays (Pavements); Pavement performance; Quality control; Test sections; Urban areas
- Old TRIS Terms: Frictional properties; Urban freeways
- Subject Areas: Design; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces; I31: Bituminous Binders and Materials;
Filing Info
- Accession Number: 00492075
- Record Type: Publication
- ISBN: 0309048117
- Files: TRIS, TRB
- Created Date: Mar 31 1990 12:00AM