ASTM D4799-00
(Test Method)Standard Test Method for Accelerated Weathering Test Conditions and Procedures for Bituminous Materials (Fluorescent UV and Condensation Method)
Standard Test Method for Accelerated Weathering Test Conditions and Procedures for Bituminous Materials (Fluorescent UV and Condensation Method)
SCOPE
1.1 This test method covers the test conditions and procedures that are applicable when Practice G53 is employed for the exposure of bituminous roofing and waterproofing materials having a minimum softening point of approximately 200°F (95°C) as determined by Test Method D36.
1.2 The values stated in inch-pound units are to be regarded as the standard.
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.
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Designation: D 4799 – 00
Standard Test Method for
Accelerated Weathering Test Conditions and Procedures for
Bituminous Materials (Fluorescent UV and Condensation
Method)
This standard is issued under the fixed designation D 4799; 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 3. Summary of Test Method
1.1 This test method describes test conditions and proce- 3.1 Thin films of bitumen are uniformly applied to alumi-
dures for fluorescent UV and condensation exposures con- num panels. Shingles and similar materials are cut to size and
ducted according to Practices G 151 and G 154 for bituminous exposed to specified cycles of temperature, light and water. A
roofing and waterproofing materials that have a minimum choice of three test cycles is given along with options for
softening point of approximately 95°C (200°F) as determined determining the period of exposure and evaluating results.
by Test Method D 36. (Also see Terminology G 113.)
4. Significance and Use
1.2 The values stated in SI units are to be regarded as the
4.1 This weathering apparatus is used for comparing the
standard. The values given in parentheses are for information
only. weathering characteristics of bituminous materials against a
reference material in which the outdoor weathering character-
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the istics are known. It is not possible to establish a precise
correlation between accelerated and natural weathering be-
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- cause of geographical climatic variations, local weather varia-
tion from normal, and local pollutants. Guide G 141 provides
bility of regulatory limitations prior to use.
guidance regarding this issue.
2. Referenced Documents
5. Apparatus
2.1 ASTM Standards:
D 36 Test Method for Softening Point of Bitumen (Ring- 5.1 The fluorescent UV and condensation apparatus used
shall conform to the requirements defined in Practices G 151
and-Ball Apparatus)
D 1669 Practice for Preparation of Test Panels for Acceler- and G 154.
5.2 Lamps—Unless otherwise specified, the lamps shall be
ated and Outdoor Weathering of Bituminous Coatings
D 1670 Test Method for Failure End Point in Accelerated fluorescent UV-B lamps as described in 6.1.3.3 of Practice
G 154.
and Outdoor Weathering of Bituminous Materials
G 113 Terminology Relating to Natural and Artificial 5.2.1 Other fluorescent UV lamps meeting the size and
Weathering Tests of Nonmetallic Materials electrical characteristics in 5.2 may be used if mutually agreed
upon and provided that the lamp and spectral energy distribu-
G 141 Guide for Addressing Variability in Exposure Testing
of Nonmetallic Materials tion are reported in conformance with Section 9.
G 147 Practice for Conditioning and Handling of Nonme-
6. Test Specimens
tallic Materials for Natural and Artificial Weathering Tests
6.1 Unless otherwise agreed upon, test specimens shall be
G 151 Practice for Exposing Nonmetallic Materials in Ac-
approximately 3 by 6 in. (75 by 150 mm). Bituminous
celerated Test Devices That Use Laboratory Light
materials shall be applied as uniform coatings on aluminum
Sources
panels in accordance with Practice D 1669. Fabricated materi-
G 154 Practice for Operating Fluorescent Light Apparatus
als such as bituminous roofing, shingles, and similar products
for UV Exposure of Nonmetallic Materials
shall be cut to size and their weather surfaces exposed. If these
are too flexible to sustain their own weight in a vertical
This test method is under the jurisdiction of ASTM Committee D-8 on Roofing, position, they may be mounted on aluminum panels.
Waterproofing, and Bituminous Materials and is the direct responsibility of
6.1.1 Replicate specimens are desirable to provide a record
Subcommittee D08.02 on Prepared Roofings, Shingles, and Siding Materials.
of degradation at different time intervals. Retention of an
Current edition approved Jan. 10, 200
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