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LEAN-MIX ROLLED CONCRETE FOR PAVEMENT SLABS

THE FEASIBILITY IS DISCUSSED OF USING LEAN-MIX CONCRETE IN PAVEMENT SLABS. THE CEMENT FACTOR WAS VARIED FROM 2.9 TO 5.4 WITH PROPERLY SELECTED AGGREGATE GRADINGS AND WITH THE WATER CONTENT HELD BETWEEN 17 AND 22 GAL PER CU YD. COMPACTION WAS EFFECTED WITH A RAMMER AND/OR A FLAT-WHEEL ROLLER. IN DESIGN OF MIX PROPORTIONS OF PORTLAND CEMENT CONCRETE, WORKABILITY OR FINISHABILITY IS THE BASIC ELEMENT FOR DETERMINING THE AMOUNT OF WATER NEEDED IN THE UNIT VOLUME OF CONCRETE. FROM THE AMOUNT OF WATER, THE AMOUNT OF CEMENT OF DETERMINED FOR THE DESIRED STRENGTH OF CONCRETE AND THE WATER-CEMENT RATIO TO RESIST WEATHERING. IN ORDINARY CASES, WORKABILITY IS DETERMINED BY THE MIXING OPERATION AND, ESPECIALLY, THE COMPACTION PROCEDURES USING MECHANICAL VIBRATORS. IF THE DIFFERENT MIXING OPERATION AND COMPACTION PROCEDURES SUITABLE FOR A DRIER MIX AND FITTED TO THE ROAD CONSTRUCTION ARE ADOPTED, CEMENT CONTENT WILL BE DECREASED AND SEVERAL TROUBLES CAUSED WITH RICH MIXES WILL BE ELIMINATED. /AUTHOR/

  • Record URL:
  • Supplemental Notes:
    • Vol 37, pp 295-305, 12 FIG, 5 TAB, 10 REF. 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.
  • Authors:
    • Itakura, C
    • Sugawara, T
    • Kaku, T
  • Publication Date: 1958

Media Info

  • Media Type: Digital/other
  • Monograph Title: Proceedings of the Thirty-Seventh Annual Meeting of the Highway Research Board, Washington, D.C., January 6-10, 1958
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00205923
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Sep 27 1971 12:00AM