ASTM D1669-89(1994)e1
(Practice)Standard Practice for Preparation of Test Panels for Accelerated and Outdoor Weathering of Bituminous Coatings
Standard Practice for Preparation of Test Panels for Accelerated and Outdoor Weathering of Bituminous Coatings
SCOPE
1.1 This practice covers a procedure for the preparation of accelerated and outdoor weathering test panels of bituminous coatings. It is considered suitable for the preparation of film thicknesses in the range from 0.25 to 2.54 mm (0.010 to 0.100 in.).
1.2 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.
1.3 The values stated in SI units are to be regarded as standard.
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Designation: D 1669 – 89 (Reapproved 1994)
Standard Practice for
Preparation of Test Panels for Accelerated and Outdoor
Weathering of Bituminous Coatings
This standard is issued under the fixed designation D 1669; 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.
e NOTE—Section 10 was added editorially in November 1994.
1. Scope 5.1.1 Metal, Aluminum or Aluminum Alloy, as described in
Table 2 of Specification B 209 under Alloy 3003-H14.
1.1 This practice covers a procedure for the preparation of
5.1.2 Finish—Mill finish and process cleaned.
accelerated and outdoor weathering test panels of bituminous
5.1.3 Dimensions:
coatings. It is considered suitable for the preparation of film
5.1.3.1 Thickness—0.025 to 0.075 in. (0.64 to 1.90 mm).
thicknesses in the range from 0.010 to 0.100 in. (0.25 to 2.54
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5.1.3.2 Width and Length—2 ⁄4 by 5 ⁄8 in. (70 by 150 mm)
mm).
or of a size that will allow a minimum bitumen film area of 2
1.2 This standard does not purport to address all of the
by 5 in. (51 by 127 mm).
safety concerns, if any, associated with its use. It is the
5.1.4 Flatness—The maximum deviation from a true flat
responsibility of the user of this standard to establish appro-
surface for either length or width shall not exceed 0.0005 times
priate safety and health practices and determine the applica-
the dimension. Flatness shall be measured on a true flat surface
bility of regulatory limitations prior to use.
employing a curling gage equipped with a dial which reads in
2. Referenced Documents
0.001 in. (0.025 mm) and having a foot loading of approxi-
mately 100 g.
2.1 ASTM Standards:
5.1.5 Edges—The edges of the panels shall be free of burrs.
B 209 Specification for Aluminum and Aluminum-Alloy
5.1.6 Storage—Panels shall be stored in a dry, well-
Sheet and Plate
ventilated place to prevent condensation and possible staining
D 5 Test Method for Penetration of Bituminous Materials
or corrosion.
E 1 Specification for ASTM Thermometers
5.2 Press—The press shall be capable of delivering a
3. Summary of Practice
10 000-lb (4500-kg) thrust and be equipped for using platens
152 by 152 mm (6 by 6 in.) or larger platens.
3.1 Heated bituminous material is poured onto a clean,
5.3 Platens—The platens shall be 6 by 6 in. (152 by 152
heated, and masked aluminum panel. Care is taken to remove
mm) or larger in size and suitable for use with the press.
air bubbles. The bitumen is leveled in a press before solidify-
(Platens can be purchased with the press.) It is preferable that
ing, and the coated panel is then cooled, cleaned, and measured
both platens have thermostatically controlled units capable of
for uniform thickness.
heating them to temperatures up to 260°C (500°F).
4. Significance and Use
5.4 Metal Spacers—The metal spacers shall be ⁄2 in. (13
mm) wide and at least 6 in. (152 mm) long and of suitable
4.1 This practice for preparation of test panels greatly
thickness so that the proper thicknesses of bitumen films can be
increases the likelihood of achieving reproducible results in
applied. To cover the range from 0.010 to 0.100 in. (0.254 to
subsequent testing.
2.54 mm), the following supply of metal spacers is adequate:
5. Apparatus
5.1 Panel—A supporting metal panel on which the bitumi-
nous coating is applied. It shall meet the following require- Panels available from the following suppliers meet these requirements: The
Q-Panel Company, 26200 First St., Cleveland OH 44145, Atlas Electric Devices
ments:
Co., 4114 N. Ravenswood Ave., Chicago, IL 60613, Advanced Coating Technolo-
gies Inc., 273 Industrial Dr. (P.O. Box 401), Hillsdale MI 49242.
Model B-81, manufactured by Federal Products Corp., 1112 Eddy St.,
This practice is under the jurisdiction of ASTM Committee D-8 on Roofing, Providence, RI 02901, has been found satisfactory for this purpose.
Waterproofing, and Bituminous Materials and is the direct responsibility of A Laboratory Model Carver Press, manufactured by Fred S. Carver, Inc., 1
Subcommittee D08.02 on Prepared Roofings, Shingles, and Siding Materials. Chatham Road, Summit, NJ 07901, having a working range from 0 to 20 000 lb (0
Current edition approved Aug. 25, 1989. Published October 1989. Originally to 9000 kg) has been found satisfactory for this purpose.
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published as D 1669 – 59 T. Last previous edition D 1669 – 84 . Suitable spacers known as “shim” or “feeler” stock are available from U. S.
Annual Book of ASTM Standards, Vol 02.02. Gasket & Shim Co., (P.O. Box 360 A) 2743 Second St., Cuyahoga Falls, OH 44222,
Annual Book of ASTM Standards, Vol 04.03. and many machine shops.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
D 1669
This is to prevent oxidation and contamination of the face. Do
4–0.0015 in. (0.038 mm)
4–0.002 in. (0.051 mm)
not reuse the test panels.
2–0.003 in. (0.076 mm)
6.2 Precalibration and Classification—Measure the thick-
4–0.005 in. (0.127 mm)
ness of all panels at six representative points, and classify them
2–0.009 in. (0.229 mm)
4–0.010 in. (0.254 mm)
into groups of identical thickness.
6–0.012 in. (0.305 mm)
6.3 Marking—Mark or drill the panels either before or after
2–0.013 in. (0.330 mm)
coating, but preferably afterwards. If marked or drilled before
10–0.015 in. (0.381 mm)
coating, take care to see that these operations do not alter the
5.5 Kraft Paper—The kraft paper shall be from 0.0025 to
flatness of the panel by distortion or by leaving burrs.
0.0075 in. (64 to 191 μm) in thickness.
Caution—Stamping identification numbers by means of steel
5.6 Release Paper—The release paper shall be cut to a size
dies should be done with extreme caution; distortion of the
large enough to cover the platen. It must be easily removed
panel or shattering of the coating may result. The preferred
without damaging the bitumen film and must not leave a
method of marking is by scratching the previously coated panel
residue that cannot be removed by water.
with a hardened steel stylus. Marking may be done on the back
5.7 Heating Equipment:
of the panel or on the face at one end. The masking tape
5.7.1 One gas or electrically heated oven capable of warm-
surrounding the coated portion of the panel will leave a clean,
ing the uncoated panels, thermostatically controlled so a
uncoated area suitable for marking when the tape is stripped
temperature range from 200 to 400°F (93 to 204°C) can be
off.
maintained. A hot plate or any suitable plate-type heating unit
6.4 Mounting for Press—On a two-tier rack, mask the
capable of thermostatically controlling the temperature be-
panels so that the exposed bitumen is centered on the panel.
tween 200 and 400°F (93 to 204°C) would be adequate.
5.7.2 One gas or electrically heated hot plate or oven for
7. Preparation of Bitumen
heating the bitumen, controlled so that container temperatures
7.1 Place the seamless tin container on the thermostatically
will not exceed 600°F (316°C).
controlled hot plate or in a forced-air oven an
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