ASTM D7173-05

Standard Practice for Determining the Separation Tendency of Polymer from Polymer Modified Asphalt

SIGNIFICANCE AND USE
Purchasers of polymer modified asphalt need to be given guidelines on proper storage and handling procedures to maintain the integrity of material they have purchased. This practice provides a significant tool for understanding the characteristics of these materials as well as comparing various sources of supply.
SCOPE
1.1 This practice describes a laboratory procedure for determining the tendency of polymer to separate from polymer modified asphalt under static heated storage conditions. The results of testing on material prepared according to this practice may be used as a guideline when formulating products or to establish field handling procedures. Large differences in test results between top and bottom specimens indicate that there is a degree of incompatibility between the polymer and the base asphalt.
1.2 The values stated in SI units are to be regarded as the standard. The values 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 to determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 31-May-2005
• ICS: 75.140 - Waxes, bituminous materials and other petroleum products
• Technical Committee: D04 - Road and Paving Materials
• Drafting Committee: D04.47 - Miscellaneous Asphalt Tests

Relations

• Replaced By: ASTM D7173-11 - Standard Practice for Determining the Separation Tendency of Polymer from Polymer Modified Asphalt
• Effective Date: 01-Jun-2011

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D7173 – 05
Standard Practice for
Determining the Separation Tendency of Polymer from
Polymer Modified Asphalt
This standard is issued under the fixed designation D7173; 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 the polymer modification system being evaluated and the type
of information desired by the user. Softening Point (Test
1.1 This practice describes a laboratory procedure for de-
Method D36) and DSR (Test Method D7175) are the most
termining the tendency of polymer to separate from polymer
common tests used for this purpose.
modified asphalt under static heated storage conditions. The
resultsoftestingonmaterialpreparedaccordingtothispractice
4. Significance and Use
may be used as a guideline when formulating products or to
4.1 Purchasersofpolymermodifiedasphaltneedtobegiven
establish field handling procedures. Large differences in test
guidelines on proper storage and handling procedures to
results between top and bottom specimens indicate that there is
maintain the integrity of material they have purchased. This
a degree of incompatibility between the polymer and the base
practice provides a significant tool for understanding the
asphalt.
characteristics of these materials as well as comparing various
1.2 The values stated in SI units are to be regarded as the
sources of supply.
standard. The values given in parentheses are for information
only.
5. Apparatus
1.3 This standard does not purport to address all of the
5.1 Aluminum Tubes—25-mm (1-in.) diameter by 125-mm
safety concerns, if any, associated with its use. It is the
to 140-mm (5- to 5.5-in.) length aluminum separation tubes,
responsibility of the user of this standard to establish appro-
used to hold the test sample during conditioning.
priate safety and health practices and to determine the
5.2 Balance—Capable of being read to the nearest 0.1 g.
applicability of regulatory limitations prior to use.
5.3 Oven—Capable of maintaining a temperature of 163 6
5°C (325 6 10°F).
2. Referenced Documents
5.4 Freezer—Capable of maintaining a temperature of -10
2.1 ASTM Standards:
6 10°C (14 6 18°F).
D36 Test Method for Softening Point of Bitumen (Ring-
5.5 Rack—Capable of supporting the aluminum tubes in a
and-Ball Apparatus)
vertical position in the oven and freezer.
D7175 Test Method for Determining the Rheological Prop-
5.6 Containers—Metal or glass, 100 6 20-mL (3 oz)
erties of Asphalt Binder Using a Dynamic Shear Rheom-
capacity.
eter
5.7 Hammer and Cutting Tool—The cutting tool must be
3. Summary of Practice rigid and sharp to allow cutting of the tube containing the
sample when at a low temperature.
3.1 A measured quantity of polymer modified asphalt in a
sealed aluminum tube is conditioned in a vertical position for
NOTE 1—A tool known as a 6-in-1 painter’s tool has been found ideal
48 h at a temperature of 163 6 5°C (325 6 10°F). At the end
for this purpose.
of the conditioning period, top and bottom portions are
6. Procedure
separated and subjected to further testing to determine the
6.1 Place the empty aluminum tube in the rack, with sealed
degree of separation. Tests chosen for this purpose depend on
end down, or support it some other way in a vertical position.
This practice is under the jurisdiction of ASTM Committee D04 on Road and
Paving Materials and is the direct responsibility of Subcommittee D04.47 on Aluminum tubes suitable for this purpose may be obtained from R/H Specialty
Miscellaneous Asphalt Tests. & Machine,, Inc., P.O. Box 10187, Terre Haute, IN 47801, [phone], as Part
Current ed
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