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Significance and Use
Staining of a building is an aesthetically undesireable occurance. This test method evaluates the likelihood of a sealant causing early stain on a porous substrate due to certain chemical exudations from the sealant.
This test method may not predict staining caused by such factors as residue run-down or dirt pick-up by a sealant exudate.
This test method is useful to predict potential color changes in the sealant itself after weathering.
This test method measures color change in a sealant and staining of substrate by the sealant under conditions of artificial weathering. See also Test Method D2203, which measures staining by a sealant due to gross exudations from the sealant; it does not subject the sealant to artificial weathering.
1.1 This test method covers an accelerated laboratory procedure to determine if a sample of a joint sealant will stain the substrate when in contract with masonry, concrete, or stone (such as marble, limestone, sandstone, and granite). This test method also is intended to determine whether the sealant itself will change in color when exposed to the weather.
1.2 The values stated in SI units are to be regarded as the standard. The value given in parentheses are for information only.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C109/C109M Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube Specimens)
C150 Specification for Portland Cement
C207 Specification for Hydrated Lime for Masonry Purposes
C717 Terminology of Building Seals and Sealants
C1442 Practice for Conducting Tests on Sealants Using Artificial Weathering Apparatus
D2203 Test Method for Staining from Sealants
G113 Terminology Relating to Natural and Artificial Weathering Tests of Nonmetallic Materials
ICS Number Code 91.100.50 (Binders. Sealing materials)
UNSPSC Code 31201600(Other adhesives and sealants)