Journal Published Online: 14 May 2010
Volume 7, Issue 5

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

CODEN: JAIOAD

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
The National Brick Research Center, Clemson Univ., Anderson, SC
Brosnan, Denis
The National Brick Research Center, Clemson Univ., Anderson, SC
Pages: 11
Price: $25.00
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Stock #: JAI102725
ISSN: 1546-962X
DOI: 10.1520/JAI102725