ASTM D243-97
(Test Method)Standard Test Method for Residue of Specified Penetration
Standard Test Method for Residue of Specified Penetration
SCOPE
1.1 This test method is used to thermally reduce a road oil or a semisolid asphalt having a penetration greater than 100 to a residue of specified penetration.
1.2 The values stated in inch-pound units are to be regarded as the standard. The Si units given in parentheses are for information only.
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. Specific precautionary statements are given in Note 2.
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NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
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Designation: D 243 – 97
Standard Test Method for
Residue of Specified Penetration
This standard is issued under the fixed designation D 243; 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 5.1.1 Container—The container in which the sample is to
be tested shall be a flat-bottom, cylindrical seamless tin box, 70
1.1 This test method is used to thermally reduce a road oil
3 3
mm (2 ⁄4 in.) in diameter and 45 mm (1 ⁄4 in) in depth.
or a semisolid asphalt having a penetration greater than 100 to
a residue of specified penetration.
NOTE 1—Containers known in the drug trade as seamless “ointment
1.2 The values stated in metric units are to be regarded as boxes” may be obtained in dimensions conforming to the above require-
ments.
the standard. The inch-pound units given in parentheses are for
information only.
5.1.2 Heating Bath—The heating bath shall be a cast-iron
1.3 This standard does not purport to address all of the
air bath, or equivalent, permitting the immersion of the
safety concerns, if any, associated with its use. It is the 1
container to a depth of 31.8 mm (1 ⁄4 in.) through an opening
responsibility of the user of this standard to establish appro- 1
1.6 mm ( ⁄16 in.) larger in diameter than the container. It shall
priate safety and health practices and determine the applica-
support the container 6.4 mm ( ⁄4 in.) above the hot plate and
bility of regulatory limitations prior to use. Specific precau-
with at least 6.4 mm free air space between the sides of the
tionary statements are given in Note 2.
container and of the air bath below the opening. A suitable air
bath is shown in Fig. 1.
2. Referenced Documents
5.1.3 Hot Plate—The air bath shall be heated upon a
2.1 ASTM Standards:
suitably mounted hot plate, heated either electrically or by
D 5 Test Method for Penetration of Bituminous Materials
means of a gas flame. The plate shall be capable of maintaining
E 1 Specification for ASTM Thermometers
the sample continuously at the required temperature, and
apparatus necessary to fulfill this requirement, such as a
3. Summary of Test Method
rheostat or gas pressure regulator, shall be provided.
3.1 The material to be tested is rapidly heated to 249°C
5.1.4 Thermometer—An ASTM Open Flash Thermometer,
(480°F) and maintained at 249° to 260°C (480° to 500°F)
graduated in either Celsius or Fahrenheit degrees as specified,
during evaporation of the volatiles. Penetration of the residue is
having a range of − 6 to + 400°C or + 20 to + 760°F and
determined and if not within the specified limits, the evapora-
conforming to the requirements for thermometer 11C or 11F,
tion procedure is repeated. Change in sample mass is used to
respectively, as prescribed in Specification E 1.
calculate the percentage of residue having the specified pen-
etration. 6. Preparation of Sample
6.1 Thoroughly stir and agitate the sample as received to
4. Significance and Use
ensure a complete mixture before the portion for testing is
4.1 This test method is used to determine the percentage of
removed.
residue having a specified penetration at 100 g/5 s at 25°C
(77°F). This test method provides a residue for quality control 7. Procedure
or for use in other tests as desired.
7.1 Weigh a 100.00 6 0.1-g sample of the material to be
tested into a tared container; then place the container in the air
5. Apparatus
bath in position to be heated. Support the thermometer in the
5.1 The apparatus shall consist of a container, heating bath,
sample equidistant from the sides of the container and with the
hot plate, and thermometer, with necessary accessory apparatus
bottom of the bulb neither more than 6.4 mm ( ⁄4 in.) above nor
as follows:
touching the bottom of the container. The bulb shall be
completely immersed in the sample throughout the heating. An
assembly of the apparatus is shown in Fig. 2.
This test method is under the jurisdiction of ASTM Committee D-4 on Road
7.2 Heat the sample as rapidly as possible without foaming
and Paving Materials and is the direct responsibility of Subcommittee D04.46 on
Durability Tests.
to a temperature of 249°C (480°F) and during the evaporation,
Current edition approved Oct. 10, 1997. Published April 1998. Originally
published as D 243 – 26 T. Last previous edition D 243 – 94.
Annual Book of ASTM Standards, Vol 04.03.
Annual Book of ASTM Standards, Vol 14.03.
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