STRESS RELAXATION OF BITUMINOUS CONCRETE IN TENSION
ASPHALTIC CONCRETE HAS BEEN LARGELY STUDIED IN COMPRESSION THE EVALUATION OF RHEOLOGICAL PROPERTIES OF ASPHALTIC CONCRETE IN TENSION AIDS IN COMPLETING A PICTURE OF THIS COMPLICATED MATERIAL SYSTEM. A SIMPLE TEST METHOD, EMPLOYING A CONSTANT RATE OF EXTENSION WAS USED TO DETERMINE THE RELAXATION BEHAVIOR OF CERTAIN ASPHALT-AGGREGATE MIXTURES. EXPERIMENTAL RESULTS WERE THEN COMPARED WITH COMPRESSION TEST RESULTS CONDUCTED IN THE SAME MANNER. NONLINEAR VISCOELASTIC BEHAVIOR WAS EXPERIENCED IN BOTH TYPES OF TESTS AND THE EFFECT OF TEMPERATURE AND STRAIN ON NONLINEARITY WAS DETERMINED. IN TENSION THE NONLINEARITY INCREASED WITH DECREASING TEMPERATURE, WHEREAS IN COMPRESSION THE REVERSE WAS TRUE. A POSSIBLE EXPLANATION FOR REVERSAL OF THE TEMPERATURE DEPENDENCE OF THE NONLINEARITY INVOLVES INTERPARTICLE FRICTION AND LOW-TEMPERATURE "STRESS-RISER" EFFECTS.
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Supplemental Notes:
- 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:
- Davis, Edgar F
- Krokosky, Edward M
- Tons, Egons
- Publication Date: 1965
Media Info
- Media Type: Digital/other
- Features: Figures; Photos; References;
- Pagination: pp 38-58
- Monograph Title: Bituminous materials and mixes
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Serial:
- Highway Research Record
- Issue Number: 67
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Aggregates; Alternatives analysis; Asphalt; Asphalt concrete; Bitumen; Bituminous mixtures; Compression tests; Evaluation; Nonlinear systems; Properties of materials; Relaxation tests; Rheological properties; Rheology; Strain (Mechanics); Stress (Psychology); Stresses; Temperature; Tensile properties; Tension; Testing; Tests; Viscoelasticity
- Uncontrolled Terms: Extension; Tensile
- Old TRIS Terms: Determination; Strains
- Subject Areas: Geotechnology; Highways; Materials;
Filing Info
- Accession Number: 00210527
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Dec 12 1994 12:00AM