Petrographic Examination

    Published: Jan 1956

      Format Pages Price  
    PDF (524K) 21 $25   ADD TO CART


    Petrographic examination of concrete aggregate is visual examination and analysis of the material in terms of both lithology and properties of the individual particles. The procedure requires use of a hand lens and petrographie and stereo-scopic microscopes; less commonly, X-ray diffraction or differential thermal analysis is a necessary part of the procedure. By petrographie examination, the relative abundance of specific types of rocks and minerals is established; the physical and chemical attributes of each, such as particle shape, surface texture, pore characteristics, hardness, and potential alkali reactivity, are described; coatings are identified and described; and the presence of contaminating substances is determined.

    Author Information:

    Mielenz, RC
    Head, Petrographic Laboratory, Bureau of Reclamation, Denver, Colo.

    Paper ID: STP39438S

    Committee/Subcommittee: C09.65

    DOI: 10.1520/STP39438S

    CrossRef ASTM International is a member of CrossRef.