ASTM C1501-09

Standard Test Method for Color Stability of Building Construction Sealants as Determined by Laboratory Accelerated Weathering Procedures

SIGNIFICANCE AND USE
This test method is intended to induce color changes in sealants, as well as their constituent pigments, associated with end-use conditions, including the effects of sunlight, moisture, and heat. The exposures used in this test method are not intended to simulate the color change of a sealant caused by localized weathering phenomena, such as atmospheric pollution, biological attack, and saltwater exposure.
When conducting exposures in devices that use laboratory light sources, it is important to consider how well the artificial test conditions will reproduce property changes and failure modes associated with end-use environments for the sealant being tested. Information on the use and interpretation of data from accelerated exposure tests is provided in ASTM G 151.
When this test method is used as part of a specification, exact procedure, test conditions, test duration and evaluation technique must be specified. Results obtained between the two procedures may vary, because the spectral power distribution of the light sources (fluorescent UV and xenon arc) differ. Sealants should not be compared to each other based on the results obtained in different types of apparatus.
These devices are capable of matching ultraviolet solar radiation reasonably well. However, for sealants sensitive to long wavelength UV and visible solar radiation, the absence of this radiation in the fluorescent UV apparatus can distort color stability ranking when compared to exterior environment exposure.
Note 1—Refer to Practices G 151 for full cautionary guidance regarding laboratory weathering of non-metallic materials.
SCOPE
1.1 This test method describes laboratory accelerated weathering procedures using either fluorescent ultraviolet or xenon arc test devices for determining the color stability of building construction sealants.
1.2 Color stability rankings provided by these two procedures may not agree.
1.3 The values stated in SI units are to be regarded as the standard. Values given in parentheses are for information only.
1.4 There is no equivalent ISO standard for this test method.
1.5 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.

General Information

• Status: Historical
• Publication Date: 31-Dec-2008
• ICS: 91.120.30 - Waterproofing
• Technical Committee: C24 - Building Seals and Sealants
• Drafting Committee: C24.40 - Weathering

Relations

• Replaces: ASTM C1501-04 - Standard Test Method for Color Stability of Building Construction Sealants as Determined by Laboratory Accelerated Weathering Procedures
• Effective Date: 01-Jan-2009
• Replaced By: ASTM C1501-14 - Standard Test Method for Color Stability of Building Construction Sealants as Determined by Laboratory Accelerated Weathering Procedures
• Effective Date: 01-Jun-2014
• Referred By: ASTM C1021-08(2023) - Standard Practice for Laboratories Engaged in Testing of Building Sealants
• Effective Date: 01-Jan-2009

Standards Content (Sample)

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: C1501 − 09
StandardTest Method for
Color Stability of Building Construction Sealants as
Determined by Laboratory Accelerated Weathering
1
Procedures
This standard is issued under the fixed designation C1501; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope ASTM Test Methods
G113 Terminology Relating to Natural andArtificial Weath-
1.1 This test method describes laboratory accelerated
ering Tests of Nonmetallic Materials
weathering procedures using either fluorescent ultraviolet or
G151 Practice for Exposing Nonmetallic Materials inAccel-
xenon arc test devices for determining the color stability of
erated Test Devices that Use Laboratory Light Sources
building construction sealants.
G154 PracticeforOperatingFluorescentLightApparatusfor
1.2 Color stability rankings provided by these two proce-
UV Exposure of Nonmetallic Materials
dures may not agree.
G155 Practice for Operating XenonArc LightApparatus for
1.3 The values stated in SI units are to be regarded as the Exposure of Non-Metallic Materials
standard. Values given in parentheses are for information only.
2.2 CIE Documents:
CIE Publication Number 85: 1989, Technical Report-Solar
1.4 ThereisnoequivalentISOstandardforthistestmethod.
3
Spectral Irradiance
1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3. Terminology
responsibility of the user of this standard to establish appro-
3.1 Definitions—Definitions of the following terms are
priate safety and health practices and determine the applica-
found in ASTM standard C717: compound, cure, sealant, and
bility of regulatory limitations prior to use.
substrate. Definitions of the following terms are found in
ASTM standard G113: sample, file specimen, control material,
2. Referenced Documents
fluorescent ultraviolet lamps, xenon arc, irradiance, radiant
2
2.1 ASTM Standards:
exposure, spectral power distribution, solar radiation-
C717 Terminology of Building Seals and Sealants
ultraviolet, solar radiation-visible.
C1442 Practice for Conducting Tests on Sealants Using
Artificial Weathering Apparatus
4. Summary of Test Method
D1729 Practice for Visual Appraisal of Colors and Color
4.1 Specimens for this procedure are prepared in which the
Differences of Diffusely-Illuminated Opaque Materials
sealant to be tested adheres to flat aluminum panels.While any
D2244 Practice for Calculation of Color Tolerances and
surface can be specified and used, this test method was
Color Differences from Instrumentally Measured Color
developed with aluminum panels. At least four replicates of
Coordinates
each sealant being tested are required. After curing, one
E284 Terminology of Appearance
replicate of each sealant being tested is retained as a file
E691 Practice for Conducting an Interlaboratory Study to
specimen and at least three replicates are exposed to actinic
Determine the Precision of a Test Method
radiation, heat and moisture.At the end of the exposure period,
E177 Practice for Use of the Terms Precision and Bias in
the test sealant is examined for color change by comparison to
the unexposed file specimen.
1
ThistestmethodisunderthejurisdictionofASTMCommitteeC24onBuilding
4.2 As recommended in ASTM G151 Section 4.2, unless
Seals and Sealants and is the direct responsibility of Subcommittee C24.40 on
several test sealants are exposed to determine their relative
Weathering.
Current edition approved Jan. 1, 2009. Published February 2009. Originally color stabilities, one or two control sealants of similar compo-
approved in 2001. Last previous edition approved in 2004 as C1501–04. DOI:
sition and construction to the test specimen and having known
10.1520/C1501-09.
color stability should be exposed simultaneously with the test
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
3
the ASTM website. CIE Central Bureau, Vienna, Kegelgasse 27, A-1030 Wien, Austria
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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C1501 − 09
specimen to rank the color stability of the latter compared with differences in test conditions, test results may differ with the
the color stability of the control(s). type of apparatus used. Consult Practices G154 and G155 for
differences in the spectral power distributions of the exposure
5. Significance and Use
sources and
...

This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:C1501–04 Designation:C1501–09
Standard Test Method for
Color Stability of Building Construction Sealants as
Determined by Laboratory Accelerated Weathering
1
Procedures
This standard is issued under the fixed designation C 1501; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 Thistestmethoddescribeslaboratoryacceleratedweatheringproceduresusingeitherfluorescentultravioletorxenonarctest
devices for determining the color stability of building construction sealants.
1.2 Color stability rankings provided by these two procedures may not agree.
1.3 The values stated in SI units are to be regarded as the standard. Values given in parentheses are for information only.
1.4 There is no equivalent ISO standard for this test method.
1.5 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
2
2.1 ASTM Standards:
C 717 Definitions of Terms Relating to Building Seals and Sealants Terminology of Building Seals and Sealants
C 1442 Practice for Conducting Tests on Sealants usingUsing Artificial Weathering Apparatus
D 1729 Practice for Visual EvaluationAppraisal of Colors and Color Differences of Diffusely-Illuminated Opaque Materials
D 2244 Test Method Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color
Coordinates
E 284 Terminology of Appearance
E 691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
E 177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
G113 Terminology Relating to Natural and Artificial Weathering tests forTests of Nonmetallic Materials
G 151 Practice for Exposing Nonmetallic Materials in Accelerated Test Devices Thatthat Use Laboratory Light Sources
G 154 Practice for Operating Fluorescent Light Apparatus for UV Exposure of Nonmetallic Materials
G 155 Practice for Operating Xenon Arc Light Apparatus for Exposure of Nonm-Metallic Materials
2.2 CIE Documents:
3
CIE Publication Number 85: 1989, Technical Report-Solar Spectral Irradiance
3. Terminology
3.1 Definitions—Definitions of the following terms are found inASTM standard C 717: compound, cure, sealant, and substrate.
Definitions of the following terms are found in ASTM standard G 113: sample, file specimen, control material, fluorescent
ultraviolet lamps, xenon arc, irradiance, radiant exposure, spectral power distribution, solar radiation-ultraviolet, solar radiation-
visible.
4. Summary of Test Method
4.1 Specimens for this procedure are prepared in which the sealant to be tested adheres to flat aluminum panels. While any
surface can be specified and used, this test method was developed with aluminum panels. At least four replicates of each sealant
1
This test method is under the jurisdiction of ASTM Committee C24 on Building Seals and Sealants and is the direct responsibility of Subcommittee C24.40on
Weathering.
Current edition approved Aug.Jan. 1, 2004.2009. Published October 2004.February 2009. Originally approved in 2001. Last previous edition approved in 20012004 as
C 1501–014.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
CIE Central Bureau, Vienna, Kegelgasse 27, A-1030 Wien, Austria
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
C1501–09
being tested are required. After curing, one replicate of each sealant being tested is retained as a file specimen and at least three
replicates are exposed to actinic radiation, heat and moisture. At the end of the exposure period, the test sealant is examined for
color change by comparison to the unexposed file specimen.
4.2 As recommended in ASTM G 151 Section 4.2, unless several test sealants are exposed to determine their relative color
stabilities, one or two control sealants of similar composition and construction to the test s
...