A SULPHLEX MIXTURE DESIGN METHOD BASED ON THE INDIRECT TENSILE TEST
A method of designing Sulphlex mixtures was developed based on the indirect tension test. The design procedure allows prediction of paving mix performance from the ultimate tensile properties. These properties were found to be sensitive to binder content variation. The toughness of Sulphlex and asphalt concrete mixes was shown to reach a well-defined peak, which corresponds very closely to the optimum binder content. The vaiation of toughness with changes in aggregate angularity, temperature, and rate of loading was examined. A more detailed analysis of mixture performance was based on the failure envelope. The concept of a window on the failure stress-strain plot formed by boundary curves representing types of pavement distress was developed. Boundary curves were established for the permanent deforamtion and thermal cracking modes of failure. A method of estimating the fatigue life of paving mixture was based on the relationship between resilient modulus and temperature using the conventional approach of analyzing fatigue data. The procedure for optimizing a mixture design was outlined, and an example is included.
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Supplemental Notes:
- Publication of this paper sponsored by Task Force on the Utilization of Sulfur. 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:
- Richey, Barry L
- Little, Dallas N
- Publication Date: 1983
Media Info
- Media Type: Print
- Features: Figures; References;
- Pagination: pp 174-178
- Monograph Title: Asphalt materials, mixtures, construction, moisture effects and sulfur
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Serial:
- Transportation Research Record
- Issue Number: 911
- Publisher: Transportation Research Board
- ISSN: 0361-1981
Subject/Index Terms
- TRT Terms: Aggregates; Angularity; Binder content; Fatigue (Mechanics); Forecasting; Loads; Mix design; Modulus of resilience; Pavement performance; Plasticizers; Sulfur; Temperature; Tension tests; Toughness
- Uncontrolled Terms: Fatigue life; Indirect tensile test; Loading rate
- Old TRIS Terms: Plasticized sulfur
- Subject Areas: Construction; Geotechnology; Highways; Materials; I31: Bituminous Binders and Materials;
Filing Info
- Accession Number: 00390807
- Record Type: Publication
- ISBN: 0309035546
- Files: TRIS, TRB
- Created Date: Dec 30 1984 12:00AM