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ASTM C1442-99

(Practice)

Standard Practice for Conducting Tests on Sealants Using Artificial Weathering Apparatus

Standard Practice for Conducting Tests on Sealants Using Artificial Weathering Apparatus

SCOPE
1.1 This practice covers three artificial weathering exposure procedures for evaluating the durability of sealants.
1.2 The three procedures are Practices G 152, G 154, and G 155.
1.3 The performance rankings of sealants provided by these procedures may not agree.
1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided for information only.
1.5 A related ISO procedure is ISO 11431. The user should compare to determine how procedures differ.
1.6 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 to determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
09-Aug-1999
ICS
91.100.50 - Binders. Sealing materials
Technical Committee
C24 - Building Seals and Sealants
Drafting Committee
C24.40 - Weathering
Current Stage
Ref Project

Relations

Replaced By
ASTM C1442-03 - Standard Practice for Conducting Tests on Sealants Using Artificial Weathering Apparatus
Effective Date
01-Dec-2003
Referred By
ASTM C1257-15(2023) - Standard Test Method for Accelerated Weathering of Solvent-Release-Type Sealants
Effective Date
10-Aug-1999
Referred By
ASTM C957/C957M-17 - Standard Specification for High-Solids Content, Cold Liquid-Applied Elastomeric Waterproofing Membrane With Integral Wearing Surface
Effective Date
10-Aug-1999
Referred By
ASTM C920-18 - Standard Specification for Elastomeric Joint Sealants
Effective Date
10-Aug-1999
Referred By
ASTM C1519-10(2022) - Standard Test Method for Evaluating Durability of Building Construction Sealants by Laboratory Accelerated Weathering Procedures
Effective Date
10-Aug-1999
Referred By
ASTM C1248-22 - Standard Test Method for Staining of Porous Substrate by Joint Sealants
Effective Date
10-Aug-1999
Referred By
ASTM C1311-22 - Standard Specification for Solvent Release Sealants
Effective Date
10-Aug-1999
Referred By
ASTM C734-15(2019) - Standard Test Method for Low-Temperature Flexibility of Latex Sealants After Artificial Weathering
Effective Date
10-Aug-1999
Referred By
ASTM C1518-22 - Standard Specification for Precured Elastomeric Silicone Joint Sealants
Effective Date
10-Aug-1999
Referred By
ASTM C1021-08(2023) - Standard Practice for Laboratories Engaged in Testing of Building Sealants
Effective Date
10-Aug-1999
Referred By
ASTM C1523-17 - Standard Test Method for Determining Modulus, Tear and Adhesion Properties of Precured Elastomeric Joint Sealants
Effective Date
10-Aug-1999
Referred By
ASTM C1193-16(2023) - Standard Guide for Use of Joint Sealants
Effective Date
10-Aug-1999
Referred By
ASTM C1501-23 - Standard Test Method for Color Stability of Building Construction Sealants as Determined by Laboratory Accelerated Weathering Procedures
Effective Date
10-Aug-1999
Referred By
ASTM C1382-16(2023) - Standard Test Method for Determining Tensile Adhesion Properties of Sealants When Used in Exterior Insulation and Finish Systems (EIFS) Joints
Effective Date
10-Aug-1999
Referred By
ASTM E2785-14(2022) - Standard Test Method for Exposure of Firestop Materials to Severe Environmental Conditions
Effective Date
10-Aug-1999

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ASTM C1442-99 - Standard Practice for Conducting Tests on Sealants Using Artificial Weathering ApparatusASTM C1442-99 - Standard Practice for Conducting Tests on Sealants Using Artificial Weathering Apparatus
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ASTM C1442-99 - Standard Practice for Conducting Tests on Sealants Using Artificial Weathering Apparatus
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Standards Content (Sample)

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: C 1442 – 99
Standard Practice for
Conducting Tests on Sealants Using Artificial Weathering
1
Apparatus
This standard is issued under the fixed designation C 1442; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope tion of Adhesion/Cohesion Properties After Exposure to
4
Heat and Artificial Light Through Glass and to Moisture
1.1 This practice covers three artificial weathering exposure
procedures for evaluating the durability of sealants.
3. Terminology
1.2 The three procedures are Practices G 152, G 154, and
3.1 Definitions—Definitions of the following terms are
G 155.
found in Terminology C 717: compound, cure, sealant, sub-
1.3 The performance rankings of sealants provided by these
strate. Definitions of the following terms are found in Termi-
procedures may not agree.
nology G 113: actinic radiation, sample, file specimen, control
1.4 The values stated in SI units are to be regarded as the
material, fluorescent ultraviolet lamps, xenon arc, irradiance,
standard. The values given in parentheses are provided for
radiant exposure, spectral power distribution, solar radiation-
information only.
ultraviolet, solar radiation-visible.
1.5 A related ISO procedures is ISO 11431. The user should
compare to determine how procedures differ.
4. Summary of Practice
1.6 This standard does not purport to address all of the
4.1 The test sealant is applied to a variety of substrates or as
safety concerns, if any, associated with its use. It is the
a free film or other configuration, depending upon the proper-
responsibility of the user of this standard to establish appro-
ties that are to be evaluated after the exposure is completed. At
priate safety and health practices and determine the applica-
least four replicates of each sealant being tested are required.
bility of regulatory limitations prior to use.
After curing, one replicate of each sealant being tested is
2. Referenced Documents retained as a file specimen and three replicates are exposed to
actinic radiation, heat, and moisture. At the end of the exposure
2.1 ASTM Standards:
2 period, the test sealant is examined for change in comparison to
C 717 Terminology of Building Seals and Sealants
the unexposed file specimen and to change in the control
G 113 Terminology Relating to Natural and Artificial
3 material, if used.
Weathering Tests of Nonmetallic Materials
4.2 It is recommended that a similar material of known
G 151 Practice for Exposing Nonmetallic Materials in Ac-
performance (a control) be exposed simultaneously with the
celerated Test Devices That Use Laboratory Light
3 test specimen to provide a basis for comparision.
Sources
G 152 Practice for Operating Open Flame Carbon Arc Light
5. Significance and Use
3
Apparatus for Exposure of Nonmetallic Materials
5.1 This test method is for determining the effects of actinic
G 154 Practice for Operating Fluorescent Light Apparatus
radiation, elevated temperature, and moisture on sealants and
3
for UV Exposure of Nonmetallic Materials
their constituents under controlled laboratory artificial weather
G 155 Practice for Operating Xenon Arc Light Apparatus
3 test conditions.
for Exposure of Nonmetallic Materials
5.2 When conducting exposures in devices, which use
2.2 ISO Standard:
laboratory light sources, it is important to consider how well
ISO 11431 Building Construction—Sealants: Determina-
the artificial test conditions will reproduce property changes
and failure modes associated with end-use environments for
1
This practice is under the jurisdiction of ASTM Committee C-24 on Building the sealant being tested.
Seals and Sealants and is the direct responsibility of Subcommittee C24.40 on
Weathering.
Current edition approved Aug. 10, 1999. Published November 1999.
2 4
Annual Book of ASTM Standards, Vol 04.07. Available from American National Standards Institute, 11 W. 42nd St., 13th
3
Annual Book of ASTM Standards, Vol 14.02. Floor. New York, NY 10036.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
C1442–99
NOTE 1—Refer to Practice G 151 for full cautionary guidance regarding
ments: the curing period shall not exceed 21 days, and the
laboratory weathering.
temperature during the curing period shall not exceed 50°C
(122°F). Keep one test specimen as an unexposed file specimen
5.3 The results obtained may
...

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5.1 It is known that solar radiation contributes to the degradation of sealants in exterior building joints. The use of a laboratory accelerated weathering machine with actinic radiation, moisture and heat appears to be a feasible means to give indications of early degradation by the appearance of sealant cracking. However, simulated weather factors in combination with extension may produce more severe degradation than weather factors only. Therefore, the effect of the weathering test is made more sensitive by the addition of the bending of the specimen at cold temperature.
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