STRUCTURAL EVALUATION OF PAVEMENTS FOR OVERLAY DESIGN
AGENCIES RESPONSIBLE FOR ROAD CONSTRUCTION ARE CONTINUALLY FACED WITH UPGRADING EXISTING PAVEMENTS. EVALUATION OF PAVEMENTS IS FAR FROM BEING A STANDARD PROCEDURE, AND MOST HIGHWAY DEPARTMENTS ARE FACED WITH ADOPTING SOMETHING ALREADY AVAILABLE OR DEVELOPING A TECHNIQUE SUITABLE TO THEIR OWN NEEDS. IN KING COUNTY, WASHINGTON, THE BENKELMAN BEAM WAS RECENTLY ADOPTED TO SYSTEMATICALLY MEASURE DEFLECTIONS. TWO EXISTING PAVEMENTS IN THE KING COUNTY NETWORK OF HIGHWAYS WERE MEASURED FOR DEFLECTION BY USING THE BENKELMAN BEAM. RESILIENT MODULUS AND OTHER PROPERTIES OF CORED SAMPLES WERE DETERMINED IN THE LABORATORY. THESE MATERIAL VALUES WERE USED IN CONJUNCTION WITH ELASTIC LAYER THEORY TO COMPUTE SEVERAL RESPONSE PARAMETERS INCLUDING STRAIN AND DEFLECTION. THE COMPUTED AND MEASURED DEFLECTIONS WERE COMPARED AND EVALUATED FOR COMPATIBILITY. FINALLY OVERLAY REQUIREMENTS WERE DETERMINED BY USING THE ELASTIC LAYER CONCEPT AND FATIGUE AS A DESIGN LIFE DETERMINANT. THE OVERLAY THICKNESS DETERMINED BY THIS METHOD WAS COMPARED TO THOSE FOR OTHER TECHNIQUES IN CURRENT USE AND FOUND TO BE SLIGHTLY CONSERVATIVE. /AUTHOR/
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Availability:
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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:
- Voss, D A
- Terrell, R L
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Conference:
- Western Summer Meeting
- Location: Sacremento California, United States
- Date: 1970-8-17 to 1970-8-19
- Publication Date: 1971
Media Info
- Media Type: Print
- Features: Figures; References;
- Pagination: pp 199-210
- Monograph Title: Improving Pavement and Bridge Deck Performance
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Serial:
- Highway Research Board Special Report
- Issue Number: 116
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Benkelman beam; Deflection; Design; Elasticity (Mechanics); Evaluation; Life span; Modulus; Overlays (Pavements); Pavement performance; Pavements; Resilience (Materials); Thickness
- Old TRIS Terms: Elastic theory; Layered theories; Pavement deflection
- Subject Areas: Design; Highways; Pavements; Society;
Filing Info
- Accession Number: 00205874
- Record Type: Publication
- ISBN: 0309018439
- Files: TRIS, TRB, ATRI
- Created Date: Jun 29 1971 12:00AM