WHAT AN OVERLAY DESIGN PROCEDURE SHOULD ENCOMPASS
AN EXAMINATION IS MADE OF WHAT AN OVERLAY DESIGN PROCEDURE SHOULD ENCOMPASS, AND PROCEDURES OF OVERLAY DESIGN ARE CONSIDERED. A SYSTEMATIC APPROACH TO PAVEMENT DESIGN IS PRESENTED SHOWING PERFORMANCE VARIABLES. THE INPUTS OF LOAD, ENVIRONMENT, CONSTRUCTION, AND MAINTENANCE VARIABLES RESULT IN THE SYSTEM OUTPUTS OF DEFLECTION, STRESS, AND STRAIN THAT LEAD TO THE DISTRESS MANIFESTATIONS OF RUPTURE, DISTORTION, AND DISINTEGRATION. THESE ARE COMBINED TO GIVE A WEAR-OUT PARAMETER FOR THE SYSTEM. FAILURE PARAMETERS ARE CAREFULLY EXAMINED. THE SYSTEMATIC APPROACH TO PAVEMENT DESIGN IS FULLY APPLICABLE TO AN OVERLAY DESIGN PROCEDURE. THIS INVESTIGATION SHOWS THAT A COMPREHENSIVE OVERLAY DESIGN PROCEDURE ACCOUNTING FOR THE INTERACTION OF ALL MODES OF FAILURE IS NOT FEASIBLE AT THE PRESENT TIME. HOWEVER, A SYSTEMATIC APPROACH TO OVERLAY DESIGN SHOULD BE DEVELOPED. AT THE PRESENT TIME, THE DISINTEGRATION AND DISTORTION MODES OF FAILURE MUST BE CONTROLLED BY INDEPENDENT SPECIFICATIONS AND DESIGN PROCEDURES. DEFLECTION IS AN EXCELLENT MEASURE OF LOAD-CARRYING CAPACITY OF AN EXISTING FACILITY, AND ITS USE IS RECOMMENDED IN EVALUATING THE MECHANICAL STRESS AND STRAIN OF A PAVEMENT STRUCTURE.
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Supplemental Notes:
- Paper sponsored by Committee on Salvaging Old Pavements by Resurfacing, Maintenance of Bituminous Pavements, and Maintenance of Portland Cement Concrete Pavements and presented at the 48th 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:
- McCullough, B Franklin
- Publication Date: 1969
Media Info
- Media Type: Digital/other
- Features: Figures; References;
- Pagination: pp 43-49
- Monograph Title: Design of overlays and pavement rehabilitation
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Serial:
- Highway Research Record
- Issue Number: 300
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Bearing capacity; Defects; Deflection; Deformation curve; Overlays (Pavements); Pavement design; Pavement distress; Pavement performance; Pavements; Thickness
- Old TRIS Terms: Pavement deflection
- Subject Areas: Highways; Maintenance and Preservation; Pavements;
Filing Info
- Accession Number: 00218567
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Feb 16 1970 12:00AM