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/

  • Supplemental Notes:
    • Vol 17, ParT I, PP 284-295, 2 FIG, 6 TAB, 6 PHOT; part of Report of Department of Materials and Construction
  • Authors:
    • Larson, G H
    • Zamzow, W H
  • Publication Date: 1938

Media Info

  • 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:

Subject/Index Terms

Filing Info

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