STP523

    Accuracy of Relative Density Measurements: Results of a Comparative Test Program

    Published: Jan 1973


      Format Pages Price  
    PDF Version (720K) 43 $25   ADD TO CART
    Complete Source PDF (9.1M) 43 $127   ADD TO CART


    Abstract

    A cooperative testing program was conducted, under the sponsorship of the American Society for Testing and Materials (ASTM), by 41 soil laboratories in the United States and Canada to determine variations associated with gradation tests, minimum and maximum density tests used to define the relative density, and Proctor compaction tests on identical specimens of a fine sand and a gravelly sand. Data were analyzed statistically on the basis of variations among laboratories and between duplicate tests. Results indicated that: (1) all tests were affected by a large variability and a low reproducibility, (2) variations among laboratories were two to three times greater than variations between duplicate tests, (3) resulting variations on the relative density were such that this parameter cannot be used efficiently in practice, and (4) relative compaction, even though not very reliable, is a better parameter for expressing the density of a soil.

    Keywords:

    soil tests, density (mass/volume), analysis of variance, cohesionless soils, soil compacting, tests, statistical analysis, variability


    Author Information:

    Tavenas, FA
    Associate professor and professor, Laval University, Quebec

    Ladd, RS
    Woodward Moorhouse & Associates Inc., Clifton, N. J.

    La Rochelle, P
    Associate professor and professor, Laval University, Quebec


    Paper ID: STP37862S

    Committee/Subcommittee: D18.92

    DOI: 10.1520/STP37862S


    CrossRef ASTM International is a member of CrossRef.