A STUDY OF 34-E PAVERS
THIS PAPER SUMMARIZES DATA OBTAINED IN 16 STUDIES OF THE MIXING OF PORTLAND CEMENT CONCRETE IN 34-E DUAL-DRUM PAVERS, CONDUCTED BY 13 STATE HIGHWAY DEPARTMENTS. DETERMINATIONS WERE MADE OF THE DESIRABLE TIME OF MIXING AND THE AMOUNT OF OVERLOAD WHICH COULD BE PERMITTED. THE RESULTS INDICATED THAT THE HIGHEST STRENGTHS WERE ATTAINED AT A 60-SEC. MIXING TIME, EXCLUSIVE OF TRANSFER TIME, AND THAT AN OVERLOAD OF 10 OR 20 PERCENT COULD BE TOLERATED. IT WAS ALSO FOUND THAT LITTLE LOSS IN STRENGTH OF THE CONCRETE RESULTED WHEN THE MIXING TIME WAS REDUCED TO 40 SEC. EXCLUSIVE OF TRANSFER TIME, BUT WHEN THE MIXING TIME WAS REDUCED TO 30 SEC. A LOSS IN STRENGTH OF 5 TO 6 PERCENT OCCURRED. A MIXING TIME OF MORE THAN 60 SEC. EXCLUSIVE OF TRANSFER TIME, WAS FOUND TO BE UNDESIRABLE BECAUSE IT INVOLVED WASTE OF EFFORT AND RESULTED IN LOSS OF STRENGTH WITHOUT GAIN IN THE UNIFORMITY OF THE CONCRETE. /AUTHOR/
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Supplemental Notes:
- No 265, pp 33-50, 20 FIG, 6 TAB, 2 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.
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Authors:
- Woolf, D O
- Publication Date: 1960
Media Info
- Media Type: Digital/other
- Pagination: 18p
- Monograph Title: Concrete pavement construction
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Serial:
- Highway Research Board Bulletin
- Issue Number: 265
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Drums (Containers); Mixing; Oversize loads; Pavers; Portland cement concrete; Strength of materials; Time
- Uncontrolled Terms: Overloads
- Old TRIS Terms: Drums; Mixing time
- Subject Areas: Construction; Highways; Materials; Vehicles and Equipment;
Filing Info
- Accession Number: 00215099
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Apr 28 1994 12:00AM