Standard Test Method for Staining from Sealants

SIGNIFICANCE AND USE
Staining of a building is an aesthetically undesirable occurrence. This test method evaluates the likelihood of a sealant causing an early stain on a porous substrate, when the stain is caused by gross exudation from the sealant. This test method does not predict staining caused by other factors.
See also Test Method C 510.
SCOPE
1.1 This test method covers a laboratory procedure for determining whether a sample of sealant will cause staining of the substrate when in the contact with masonry, concrete, or stone (marble, limestone, sandstone, granite, etc.).
1.2 The values stated in SI (metric) units are to be regarded as the standard. The values given in parentheses are provided for information only.
1.3 This standard does not purport to address all of the safety problems, 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.
Note 1--Currently there is no ISO standard similar to this test method.

General Information

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Publication Date
09-Jun-2001
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ASTM D2203-01 - Standard Test Method for Staining from Sealants
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D2203–01
Standard Test Method for
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Staining from Sealants
This standard is issued under the fixed designation D2203; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
3 3
1. Scope 5.2 Brass Ring,19mm( ⁄4 in.) inside diameter, 19 mm ( ⁄4
in.) high, walls at one end beveled to a minimum diameter.
1.1 This test method covers a laboratory procedure for
5.3 Filter Paper, ten sheets, high-grade, rapid, qualitative 9
determining whether a sample of sealant will cause staining of
3
cm in diameter.
the substrate when in the contact with masonry, concrete, or
5.4 Aluminum Foil,household-type,25.4mm(1in.)square.
stone (marble, limestone, sandstone, granite, etc.).
5.5 Weight, 300-g.
1.2 The values stated in SI (metric) units are to be regarded
5.6 Spatula, small, thin, steel.
as the standard. The values given in parentheses are provided
5.7 Glass Plate, at least 100 by 100 mm (4 by 4 in.).
for information only.
5.8 Desiccator, with drying agent.
1.3 This standard does not purport to address all of the
safety problems, if any, associated with its use. It is the
6. Sampling
responsibility of the user of this standard to establish appro-
6.1 Take the test specimen from a previously unopened
priate safety and health practices and determine the applica-
container and thoroughly mix before using, if required for
bility of regulatory limitations prior to use.
homogeneity.
NOTE 1—Currently there is no ISO standard similar to this test method.
7. Conditioning
2. Referenced Documents
7.1 Condition the sample in a closed container for at least 5
2.1 ASTM Standards:
hat23 6 2°C (73.4 6 3.6°F).
C510 Test Method for Staining and Color Change of
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Single- or Multicomponent Joint Sealants 8. Procedure
2
C717 Terminology of Building Seals and Sealants
8.1 Dry the filter papers for 5 to8hinan oven maintained
at 104.5 6 3°C (220 6 5.4°F).At the end of the drying period,
3. Terminology
remove from the oven and store in a desiccator until cool.
3.1 Definitions—RefertoTerminologyC717fordefinitions
8.2 Remove ten filter papers from the desiccator, staple
of the following terms used in this test method: compound,
them together, and place them on a glass plate. Set the brass
sealant, substrate.
ring with beveled edge down on the center of the filter papers.
Filltheringflushwiththoroughlymixedsealant,takingcareto
4. Significance and Use
incorporate as little air as possible with the compound. Place a
4.1 Staining of a building is an aesthetically undesirable
25.4-mm (1-in.) square piece of aluminum foil on top of the
occurrence. This test method evaluates the likelihood of a
ring, and the 300-g weight on top of that.
sealant causing an early stain on a porous substrate, when the
8.3 Allow the filled ring to stand for 72 h at 23 6 2°C (73.4
stain is caused by gross exudation from the sealant. This test
63.6°F).Thenslideaspatulaunderthebrassringandremove
method does not predict staining caused by other factors.
theringandcompound.Holdthetopfilterpaperuptothelight
4.2 See also Test Method C510.
with a glass plate under it and, with a sharp pencil, mark the
maximum and minimum diameters of the stain. Measure these
5. Apparatus and Materials
diameters to the nearest 0.5 mm. Subtract 19 (diameter of ring
5.1 Convection Oven, having a temperature controlled at
in millimetres) from the average of the two diameters and
104.5 6 3°C (220 6 5°F).
divide by 2. Record this result as width of stain. (Width of
stain=(average−19)/2).
8.4 Examine the ten individual papers for depth of stain by
1
holding them up to a light. Record the number of papers,
ThistestmethodisunderthejurisdictionofASTMCommitteeC24onBuilding
Seals and Sealants and is the direct responsibility of Subcommittee C24.20 on
General Sealent Standards.
Current edition approved June 10, 2001. Published July 2001. Originally
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published as D2203–63T. Last previous edition D2203–93. This test method is based on the use of Whatman No. 1 filter paper,
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Annual Book of ASTM Standards, Vol 04.07. manufactured by Whatman, Inc., 9 Bridewell Place, Clifton, NJ 07073.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D2203–01
including the first one, showing any evidence of staining as 10.2.1 Average stain value on surface of each block, desig-
number of papers stained. nated as S,
8.5 Report the sum of width of stain and number of papers 10.2.2 Average stain value inside of each block, designated
stained as the stain index. as T, and
10.2.3 Final stain value (average of S an
...

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