VIBRATORY COMPACTION IN THE LABORATORY OF GRANULAR MATERIALS IN LONG COLUMNS

FOR A LABORATORY STUDY OF THE DRAINAGE OF LONG COLUMNS OF POROUS MEDIA, A MAXIMUM DENSITY, UNIFORMLY DISTRIBUTED THROUGHOUT THE COLUMN, WAS REQUIRED. RESEARCH RESULTED IN THE DEVELOPMENT OF A MECHANICAL TECHNIQUE FOR THE PACKING OF DRAINAGE COLUMNS, AS MUCH AS 60 IN. LONG, WITH GLASS BEADS AND NATURAL SANDS OF VARIOUS PARTICLE SIZES. A VIBRATORY PACKER USED TO PACK THESE COLUMNS, WHICH ARE 1 TO 8 IN. IN DIAMETER, PROVIDED GOOD REPRODUCIBILITY OF DRY UNIT WEIGHT AND POROSITY BETWEEN DUPLICATE COLUMNS AS WELL AS A VERTICAL UNIFORMITY OF THESE PROPERTIES WITHIN THE SAME OR DUPLICATE COLUMNS. TO DEVELOP THE STANDARD METHOD OF PACKING COLUMNS, A STUDY WAS MADE OF THE EFFECTS OF TIME, AMPLITUDE, AND SURCHARGE WEIGHT ON THE UNIFORMITY AND REPRODUCIBILITY OF RESULTS. THE TECHNIQUE WAS STANDARDIZED AT A PACKING PERIOD OF 10 S AND A VIBRATORY AMPLITUDE OF 0.09 CM. /AUTHOR/

  • Supplemental Notes:
    • Presented at the 75th Annual Meeting, Los Angeles, June 25-30, 1972.
  • Corporate Authors:

    American Society for Testing and Materials

    100 Barr Harbor Drive, P.O. Box C700
    West Conshohocken, PA  United States  19428-2957
  • Authors:
    • Johnson, A I
    • Morris, D A
  • Publication Date: 1973-7

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: p. 171-181
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00080534
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Conf Paper, A
  • Files: ITRD, TRIS
  • Created Date: Feb 27 1975 12:00AM