PROGRESS REPORT ON CHANGES IN ASPHALTIC CONCRETE IN SERVICE
THE EXPERIMENTAL ASPHALTIC CONCRETE PAVEMENTS CONSTRUCTED IN DELAWARE TO EVALUATE THE CHANGES IN THE ASPHALT AND THE PROPERTIES OF MIXTURES DURING CONSTRUCTION AND IN SERVICE DESCRIBED. TWO EXPERIMENTAL ASPHALTS FROM SPECIFIC SOURCES, EACH LAID OVER A RIGID (OLD PORTLAND CEMENT CONCRETE) AND A FLEXIBLE (OLD SURFACE TREATMENT) BASE, WERE USED. THE PRESENT REPORT INCLUDES DATA FROM THREE SERIES OF SAMPLES, THOSE TAKEN DURING CONSTRUCTION AND THOSE TAKEN AFTER ONE AND TWO YEARS OF SERVICE. COMPARISON OF RESULTS OBTAINED BY THREE DIFFERENT LABORATORIES-BUREAU OF PUBLIC ROADS, ASPHALT INSTITUTE, AND DELAWARE STATE HIGHWAY DEPARTMENT-ALSO IS PROVIDED. AT PRESENT, NO SPECIFIC CONCLUSIONS CAN BE DRAWN, BUT LABORATORY TESTS INDICATE THAT DIFFERENCES IN BEHAVIOR OF THE SAME ASPHALT AT VARIOUS LOCATIONS IN THE ROAD MAY BE AS GREAT AS OR GREATER THAN DIFFERENCES IN THE ASPHALTS FROM THE TWO CRUDE SOURCES USED IN THIS STUDY. OTHER THAN MINOR REFLECTION CRACKING FROM THE CONCRETE BASE ON THE RIGID SECTIONS, NO DETERIORATION IN THE PAVEMENTS HAS BEEN NOTED AT ANY LOCATION. /AUTHOR/
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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:
- Kenis Sr, William J
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Conference:
- 41st Annual Meeting of the Highway Research Board
- Location: Washington DC, United States
- Date: 1962-1-8 to 1962-1-12
- Publication Date: 1962
Media Info
- Media Type: Digital/other
- Features: Figures; Tables;
- Pagination: pp 39-65
- Monograph Title: Factors influencing setting and hardening of asphalt in bituminous pavements
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Serial:
- Highway Research Board Bulletin
- Issue Number: 333
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Asphalt concrete; Asphalt pavements; Bituminous materials; Experimental roads; Flexible pavements; Laboratory tests; Pavements; Portland cement concrete; Reflection cracking; Surface treating
- Old TRIS Terms: Bituminous surfacing; Existing pavements; Flexible base pavements
- Subject Areas: Highways; Materials; Pavements;
Filing Info
- Accession Number: 00210836
- Record Type: Publication
- Files: TRIS, TRB, ATRI
- Created Date: Jul 6 1970 12:00AM