PLACEMENT OF CONCRETE BY VIBRATION ON FEDERAL AID PROJECT 425 - E IN WISCONSIN

IN A FIELD EXPERIMENT CONDUCTED ON A NINE-MILE PAVING PROJECT, THE USUAL EQUIPMENT FOUND ON THE MODERN PAVING JOB WAS SUPPLEMENTED BY A CONCRETE VIBRATOR OF THE JACKSON TUBULAR TYPE, AND BY A MECHANICAL LONGITUDINAL FLOAT. THE PERCENTAGE OF SAND IN THE AGGREGATE WAS REDUCED FROM THAT SPECIFIED FOR ORDINARY PLACING METHODS IN AN EFFORT TO TAKE ADVANTAGE OF THE ABILITY OF THE VIBRATOR TO HANDLE HARSHER AND DRIER MIXES. TEST SPECIMENS CONSISTED OF CYLINDERS AND CORES DRILLED FROM THE PAVEMENT. THE CONSISTENCY AND WORKABILITY OF THE CONCRETE ON THIS JOB WAS CONTROLLED MORE BY THE FLOATING AND FINISHING OPERATIONS THAN BY THE ABILITY OF THE VIBRATOR TO COMPACT CONCRETE OF A GIVEN CONSISTENCY. THE USE OF THE VIBRATOR RESULTED IN A 10 PER CENT INCREASE IN STRENGTH OF THE CONCRETE ON THIS PROJECT. /AUTHOR/

• Record URL:
  https://onlinepubs.trb.org/Onlinepubs/hrbproceedings/17/17Pt1-022.pdf
• Supplemental Notes:
  • Vol 17, ParT I, PP 284-295, 2 FIG, 6 TAB, 6 PHOT; part of Report of Department of Materials and Construction. 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:
  • Larson, G H
  • Zamzow, W H
• Publication Date: 1938

Media Info

• Media Type: Digital/other
• Monograph Title: Proceedings of the Seventeenth Annual Meeting of the Highway Research Board Held at Washington, D.C. November 30, December 1, 2, 3, 1937. Part I
• Serial:
  • Highway Research Board Proceedings
  • Volume: 17
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Admixtures; Aggregates; Concrete; Concrete pavements; Location; Sand; Specimens; Strength of materials; Vibration; Vibratory equipment
• Old TRIS Terms: Concrete vibrators; Placement
• Subject Areas: Construction; Geotechnology; Highways;

Filing Info

• Accession Number: 00215313
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Aug 15 1971 12:00AM