COOLING OF HOT-MIXED ASPHALT LAID ON AN INSULATED BASE

The cooling of hot-mixed asphalt laid on an insulated base was studied to determine the feasibility of using thin insulation to permit cold-weather paving of thin mats on an existing pavement. A computer program was developed to predict the temperature distribution in the mat, insulation, and base. Bench-scale laboratory tests were conducted to verify the validty of the computer program. The computer program was then used to simulate cold-weather paving for field conditions. The results were analyzed statistically to determine the variables that significantly affect the time available for compaction. A step-wise multiple linear regression program was used to develop equations that would give the time available for compaction as a function of these significant variables and their interactions. In addition, a nomogram was constructed to predict the time available for compaction graphically. The results of this study indicated the possibility of using thin insulation for cold-weather paving.

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    • 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. Presented at the 6th Summer Meeting of the Transportation Research Board in cooperation with the Washington Department of Highways, August 6-8, 1973, Olympia, Washington.
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    Transportation Research Board

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  • Authors:
    • Shah, N D
    • Dickson, P F
  • Publication Date: 1974

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  • Accession Number: 00080986
  • Record Type: Publication
  • Files: TRIS, TRB, ATRI
  • Created Date: Mar 26 1975 12:00AM