Volume 31, Issue 2 (March 2008)

    Determination of Cylindrical Soil Specimen Dimensions by Imaging with Application to Volume Change of Bentonite-Sand Mixtures

    (Received 17 March 2006; accepted 6 September 2007)

    Published Online: 2007

    CODEN: GTJOAD

      Format Pages Price  
    PDF 8 $25   ADD TO CART


    Abstract

    Volumetric shrinkage of compacted bentonite and sand mixtures has been continuously monitored at small strain levels (i.e., <5 %) using a digital image processing technique. A special digital measurement setup and a computer algorithm have been developed in order to identify volume of the drying specimens. Volume change of three compacted bentonite-sand mixtures at different initial moisture contents were recorded during drying by means of vernier caliper and digital measurements. Continuous monitoring of the volumetric shrinkage of specimens using digital images proved that digital measurement and data reduction methodology developed herein is capable of determining the shrinkage amount with desired accuracy. It is shown in the study that consistent volumetric shrinkage strain readings can be taken using this cost effective, nondestructive, and operator independent measurement setup, which may have become the preferred shrinkage measurement methodology in soil mechanics laboratory practice with some added features.


    Author Information:

    Önal, Okan
    Graduate Research Assistant, Dokuz Eylul University, Civil Engineering Department, Kaynaklar Yerleskesi, Buca

    Ören, Ali Hakan
    Graduate Research Assistant, Dokuz Eylul University, Civil Engineering Department, Kaynaklar Yerleskesi, Buca

    Özden, Gürkan
    Assistant Professor, Dokuz Eylul University, Civil Engineering Department, Kaynaklar Yerleskesi, Buca

    Kaya, Abidin
    Senior Geotechnical Engineer, P.E., Department of Transportation, Materials Research Laboratory, Honolulu, Hawaii


    Stock #: GTJ100548

    ISSN: 0149-6115

    DOI: 10.1520/GTJ100548

    ASTM International is a member of CrossRef.

    Author
    Title Determination of Cylindrical Soil Specimen Dimensions by Imaging with Application to Volume Change of Bentonite-Sand Mixtures
    Symposium , 0000-00-00
    Committee D18