Volume 14, Issue 1 (March 1991)

    A Method for Determining the Surface Area of Quarried Rocks

    CODEN: GTJOAD

      Format Pages Price  
    PDF Version 11 $25   ADD TO CART


    Abstract

    A coating method which used nickel powder to determine the surface area of angular rock particles was found to be reproducible and required no special equipment. The technique utilized the difference in weight between uncoated and coated rock particles. Four calibration methods were considered. Relationships between surface area and an estimate of the volume of individual rocks were obtained for graded rock having a mean diameter of 25.6 mm and for unisized rock having a mean diameter of 130 mm. The volume of each rock was estimated by measuring the three orthogonal axes of each rock. An analysis of covariance showed that whether or not a rock was spheroid in shape was statistically significant for the evaluation of surface area. Curves relating the hydraulic mean radius to porosity for a range of unisized rock sizes are presented. A procedure for estimating the hydraulic mean radius for a graded media is also discussed.


    Author Information:

    Garga, VK
    Associate professor, professor, and graduate student, University of Ottawa, Ottawa,

    Townsend, R
    Associate professor, professor, and graduate student, University of Ottawa, Ottawa,

    Hansen, D
    Associate professor, professor, and graduate student, University of Ottawa, Ottawa,


    Stock #: GTJ10189J

    ISSN: 0149-6115

    DOI: 10.1520/GTJ10189J

    ASTM International is a member of CrossRef.

    Author
    Title A Method for Determining the Surface Area of Quarried Rocks
    Symposium , 0000-00-00
    Committee D18