COMPARISONS OF VIBRATED DENSITY AND STANDARD COMPACTION TESTS ON SANDS WITH VARYING AMOUNTS OF FINES

THE EFFECTS OF GRADATION,PERCENTAGE AND PLASTICITY OF FINES, AND MOISTURE ON VIBRATORY AND IMPACT COMPACTION OF GRANULAR SOILS WERE INVESTIGATED BY ADDING MEASURED PERCENTAGES OF LOW PLASTICITY (ML) AND MEDIUM PLASTICITY (CL) FINES TO A POORLY GRADED (SP) AND NEARLY WELL GRADED (SW-SP) SAND. RESULTS INDICATED THAT MORE FINES CAN BE ADDED TO A UNIFORM SAND AND THAT A UNIFORM SAND DENSIFIES BY VIBRATION MORE EFFECTIVELY THAN A WELL GRADED SAND. THE SAME DENSITIES ARE PRODUCED BY IMPACT AND VIBRATORY COMPACTION AT HIGHER PERCENTAGE OF FINES ADDED TO THE WELL GRADED SAND COMPARED TO THE PERCENT FINES ADDED TO THE UNIFORM SAND.MOISTURE AND PLASTICITY ARE INTERRELATED FACTORS WHICH GREATLY AFFECT COMPACTION.SATURATION FACILITATED VIBRATORY COMPACTION OF LOW PLASTICITY MIXTURES;HOWEVER,FOR MORE PLASTIC MIXTURES, ADHESION OF THE FINES TO THE SAND GRAINS RESTRICTED VIBRATORY DENSIFICATION. CURRENT COMPACTION TEST SELECTION CRITERIA,WHICH IGNORE PLASTICITY AND MOISTURE EFFECTS BY COMPARING VIBRATORY DENSITIES OF OVEN-DRY MATERIALS WITH THOSE DETERMINED BY STANDARD COMPACTION,CAN LEAD TO THE UNTENABLE CONCLUSION THAT VIBRATORY COMPACTION SHOULD BE USED FOR SANDS CONTAINING IN EXCESS OF 20 PERCENT FINES. /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:
    • Townsend, F C
  • Publication Date: 1973-7

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 348-363
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00080542
  • 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