WORKSHOP TOPIC 6. PRODUCTION AND CONSTRUCTION TECHNIQUES

The workshop discussions centered on the acceptable current practices and technology, possible innovations, and research needs. Recommendations were made for the use of higher moisture contents and lower temperatures in a conventional hot-mix plant, the burning of coal in an aggregate dryer, and a state-of-the-art report on performance specifications and associated data base. Acceptable technology recommendations also included those permitting uniform width ramps on interchanges with tapered ends to be defined by paint or seal coats; standardizing repetitive dimensions on bridge designs to permit maximum reuse of forms; permitting surfaces for structural concrete to be painted with epoxy, acrylic or other plastic materials; reducing passes with lay- down equipment and permitting maximum use of vibratory rollers; re- examining restrictions on cold weather construction; developing procedures that will permit work in wet weather or in wet materials; and using nuclear density gauges and moisture gauges to minimize equipment delays. Other technological practices recommended relate to surge bins and storage bins, in-place mixing, slip-form placement of barriers, and stability of work programs. Innovations are also listed which relate to bridge deck design, roadway rock excavation, use of laser beams and line controls on excavators and pavers, and the use of emulsion for dense mats on base courses. Research needs are also indicated.

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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. Sponsored by the Federal Highway Administration of the U.S. Department of Transportation, the Federal Energy Administration, and the Energy Research and Development Administration.
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    Transportation Research Board

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  • Authors:
    • Schmidt, R D
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  • Publication Date: 1976

Media Info

  • Media Type: Digital/other
  • Pagination: pp 54-58
  • Monograph Title: OPTIMIZING THE USE OF MATERIALS AND ENERGY IN TRANSPORTATION CONSTRUCTION
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    Open Access (libre)

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Filing Info

  • Accession Number: 00149931
  • Record Type: Publication
  • Files: TRIS, TRB, ATRI
  • Created Date: Apr 13 1977 12:00AM