VARIABILITY OF LABORATORY RELATIVE DENSITY TEST RESULTS

FOURTEEN BUREAU OF RECLAMATION SOILS LABORATORIES CONDUCTED DUPLICATE MINIMUM,AND WET AND DRY METHOD MAXIMUM DENSITY TESTS ON A FINE AND A MEDIUM SAND. DATA WERE ANALYZED ON THE BASIS OF VARIATIONS BETWEEN LABORATORIES AND BETWEEN DUPLICATE TESTS. RESULTS INDICATED THAT (1) VARIATIONS BETWEEN LABORATORIES WERE TWO TO THREE TIMES GREATER THAN VARIATIONS BETWEEN DUPLICATE TESTS (2) VARIATIONS BETWEEN LABORATORIES FOR MINIMUM AND MAXIMUM DENSITIES WERE THE SAME, OR LESS THAN, VARIATIONS REPORTED FOR IMPACT-TYPE COMPACTION TESTS AND (3) EXPRESSING THE DEGREE OF COMPACTION IN TERMS OF RELATIVE DENSITY, AS COMPARED TO PERCENT OF MAXIMUM DENSITY, REQUIRES USING DIFFERENT STANDARDS FOR BOTH THE LEVEL OF COMPACTION REQUIRED AND THE LIMITS WITHIN WHICH COMPACTION WOULD BE CONSIDERED ACCEPTABLE. GRADATION TESTS ON THE TWO SANDS WERE ALSO CONDUCTED BY 16 LABORATORIES AND ANALYZED IN THE SAME MANNER. /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:
    • Tiedemann, D A
  • Publication Date: 1973-7

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 61-73
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00080553
  • 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