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State-of-the-art in asphalt pavement specifications

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  • English
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    Details:

    • Creators:
      Welborn, J. York
    • Corporate Creators:
      Sheladia Associates, Inc.
    • Corporate Contributors:
      United States. Federal Highway Administration. Office of Engineering & Highway Operations Research and Development
    • Subject/TRT Terms:
    • Publication/ Report Number:
      FHWA-RD-84-075
    • Resource Type:
      Tech Report
    • Edition:
      Final report
    • Contracting Officer:
      Kopac, Peter
    • Corporate Publisher:
      Turner-Fairbank Highway Research Center
    • NTL Classification:
      NTL-HIGHWAY/ROAD TRANSPORTATION-Pavement Management and Performance
    • Abstract:
      The great increase in highway construction beginning in the 1950's made evident the need for better control of materials .and construction. A comprehensive research and development program was begun to use statistical methods for quality assurance in highway construction. The effort since has resulted in quality control and acceptance plans which are used in specifications to some degree by more than 30 states. The quality assurance specifications usually assign the responsibility for control of materials and construction to the contractor. Acceptance and method for pay adjustment for non-compliance are highway agency responsibilities. surveys show a wide disparity in pay adjustment factors. Performance-related specifications based on distress modes and contributing factors are also described. Studies indicate that the most predominant forms of distress are cracking (load and non-load), distortion. disintegration, roughness and reduced skid resistance. Contributing material factors and evaluation methods are outlined for each of the I performance-related distress modes. The report also summarizes the problem of reflection cracking, its contributing factors, and methods of overlay design and special treatments to prevent or minimize this form of distress condition. Recommendations are to encourage the effort to continue development of quality assurance specifications based on sound engineering judgment and to develop detailed performance-related specifications with optimum mix-design requirements to meet the need for structural capacity, rideability and skid resistance.
    • Format:
      PDF
    • Funding:
      DTFH61-81-R00052
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