FACTORS INFLUENCING AGGREGATE SKID-RESISTANCE PROPERTIES
AGGREGATES THAT HAD BEEN RATED IN LABORATORY PAVING MIXTURES FOR WEAR AND POLISHING RESISTANCE HAVE BEEN EXAMINED FOR PHYSICAL PROPERTIES SUCH AS SPECIFIC GRAVITY, ABSORPTION, AND SURFACE TEXTURE; FOR LOS ANGELES WEAR; FOR ACID-INSOLUBLE RESIDUE PERCENTAGE AND GRADATION IN THE CASE OF CARBONATE AGGGREGATES; AND PETROGRAPHICALLY FOR MINERAL COMPOSITION, GRAIN SHAPE, GRAIN SIZE AND DISTRIBUTION, AND HARDNESS OF MINERALS. FOR GRANITE AGGREGATES, HIGHER LOS ANGELES WEAR LOSS INDICATED HIGHER SKID RESISTANCE. FOR SYNTHETIC AGGREGATES, HIGH ABSORPTION AND SURFACE CAPACITY SEEMED TO CORRELATE WITH HIGHER SKID RESISTANCE. THE ACID-INSOLUBLE RESIDUE PERCENTAGES FOR THE FOUR CARBONATE AGGREGATES EXAMINED INDICATED THAT SKID RESISTANCE IMPROVED WITH INCREASED RESIDUE AND THAT SAND-SIZE RESIDUE PROBABLY IS MORE IMPORTANT THAN TOTAL RESIDUE. A GENERAL CORRLEATION WAS FOUND BETWEEN THE PETROGRAPHIC PROPERTIES AND THE SKID RESISTANCE OF ANY GIVEN AGGREGATE: SKID RESISTANCE WAS HIGHER FOR AGGREGATES HAVING MIXED COMPOSITION OF HARD AND SOFT MINERALS THAN FOR AGGREGATES CONSISTING PREDOMINANTLY OF MINERALS OF THE SAME TYPE HAVING THE SAME HARDNESS. /AUTHOR/
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Availability:
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Supplemental Notes:
- Sponsored by Committee on Surface Properties--Vehicle Interaction and presented at the 50th Annual Meeting. 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:
- Dahir, S H M
- Mullen, W G
- Publication Date: 1971
Media Info
- Media Type: Digital/other
- Features: Figures; References; Tables;
- Pagination: pp 136-148
- Monograph Title: Anti-Skid Program Management and Related Papers
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Serial:
- Highway Research Record
- Issue Number: 376
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Aggregates; Petrography; Skid resistance; Skid resistance tests
- Old TRIS Terms: Aggregate characteristics
- Subject Areas: Geotechnology; Highways;
Filing Info
- Accession Number: 00217900
- Record Type: Publication
- ISBN: 0309019907
- Files: TRIS, TRB
- Created Date: Jun 5 1972 12:00AM