Volume 7, Issue 5 (May 2010)

    Test Method for Determining the Efflorescence Potential of Masonry Materials Based on Soluble Salt Content

    (Received 8 September 2009; accepted 8 April 2010)

    Published Online: 2010

    CODEN: JAIOAD

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    Abstract

    A single test method that is capable of determining the efflorescence potential for all materials in a masonry system is needed. The need for preconstruction testing is referenced in ASTM C1400-1—“Standard Guide for Reduction of Efflorescence Potential in New Masonry Walls”—but the standard acknowledges that there is not a suitable test method for all masonry materials. In the past, soluble salt measurements have been used to quantitatively access the efflorescence potential of masonry materials. To determine the water-soluble salt content of masonry materials, a simple leaching procedure was developed to remove the salts followed by quantification of the water-soluble salt content by ion chromatography. A series of modified efflorescence tests using salt solutions and real masonry materials has been used to determine the significance of water-soluble salt measurements. A clear threshold for soluble sulfate content that indicates a high potential for the development of visible efflorescence has been identified. Sulfate salts are the most common water-soluble compounds associated with efflorescence complaints.


    Author Information:

    Sanders, John P.
    The National Brick Research Center, Clemson Univ., Anderson, SC

    Brosnan, Denis A.
    The National Brick Research Center, Clemson Univ., Anderson, SC


    Stock #: JAI102725

    ISSN: 1546-962X

    DOI: 10.1520/JAI102725

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    Author
    Title Test Method for Determining the Efflorescence Potential of Masonry Materials Based on Soluble Salt Content
    Symposium Symposium on Masonry, 2010-06-08
    Committee C01C15