ASTM D6929-10
(Practice)Standard Practice for Freezing of Emulsified Asphalts
Standard Practice for Freezing of Emulsified Asphalts
SIGNIFICANCE AND USE
Certain agencies, who desire to use, store, or transport emulsified asphalt under less than ideal weather conditions, may require that the product remain homogeneous (unbroken) after being subjected to temperatures of −18°C.
SCOPE
1.1 Emulsified asphalt is normally damaged by freezing temperatures, but specially formulated materials are expected to pass this practice.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 This practice 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: D6929 −10
Standard Practice for
1
Freezing of Emulsified Asphalts
This standard is issued under the fixed designation D6929; 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.
NOTE 1—Emulsified asphalts with viscosity testing requirements of
1. Scope
25°C may be heated and stirred as specified in 3.2, if necessary. In the
1.1 Emulsified asphalt is normally damaged by freezing
event the 3.2 method is used, the sample should be cooled to 25 6 3°C.
temperatures, but specially formulated materials are expected
to pass this practice.
4. Apparatus
1.2 The values stated in SI units are to be regarded as 4.1 Freezer—Capable of maintaining a test temperature of
standard. No other units of measurement are included in this
-1865°C.
standard.
4.2 Metal Container—such as a 500 mL press-top can.
1.3 This practice does not purport to address all of the
4.3 Glass Stirring Rod—of optional size.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5. Procedure
priate safety and health practices and determine the applica-
5.1 Place approximately 400 g of the emulsified asphalt in a
bility of regulatory limitations prior to use.
clean metal container.
2. Significance and Use
5.2 Expose the emulsified asphalt in the closed container to
2.1 Certain agencies, who desire to use, store, or transport
an air temperature of −18 6 5°C for 12 to 18 consecutive
emulsified asphalt under less than ideal weather conditions,
hours.
may require that the product remain homogeneous (unbroken)
5.3 At the expiration of the freezing period, permit the
after being subjected to temperatures of −18°C.
emulsified asphalt to thaw by exposure of the container to
3. Sample Conditioning ambient temperature.
3.1 All emulsified asphalts shall be properly stirred to 5.4 Repeat the freezing and thawing periods until the
achieve homogeneity. emulsified asphalt has been subjected to three cycles of
freezing and thawing.
3.2 All emulsified asphalts with viscosity testing require-
ments of 50°C shall be heated to 50 6 3°C in the original 5.5 After the third cycle, the emulsified asphalt may be
sample container in a water bath or oven.The container should homogeneous or may have separated into
...
This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:D6929–04 Designation: D6929 – 10
Standard Practice for
1
Freezing of Emulsified Asphalts
This standard is issued under the fixed designation D6929; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope
1.1 Emulsified asphalt is normally damaged by freezing temperatures, but specially formulated materials are expected to pass
this practice.
1.2
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 This practice 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.
2. Significance and Use
2.1 Certain agencies, who desire to use, store, or transport emulsified asphalt under less than ideal weather conditions, may
require that the product remain homogeneous (unbroken) after being subjected to temperatures of −18°C.
3. Sample Conditioning
3.1 All emulsified asphalts shall be properly stirred to achieve homogeneity.
3.2 All emulsified asphalts with viscosity testing requirements of 50°C shall be heated to 50 6 3°C in the original sample
container in a water bath or oven. The container should be vented to relieve pressure.After the sample reaches 50 6 3°C, stir the
sample to achieve homogeneity.
3.3 Emulsified asphalts with viscosity testing requirements of 25°C should be mixed or stirred at 25 6 3°C in the original
sample container to achieve homogeneity.
NOTE 1—Emulsified asphalts with viscosity testing requirements of 25°C may be heated and stirred as specified in 3.2, if necessary. In the event the
3.2 method is used, the sample should be cooled to 25 6 3°C.
4. Apparatus
4.1 Freezer—Capable of maintaining a test temperature of -1865°C.
4.2 Metal Container—such as a 500-mL500 mL press-top can.
4.3 Glass Stirring Rod—of optional size.
5. Procedure
5.1 Place approximately 400 g of the emulsified asphalt in a clean metal container.
5.2 Expose the emulsified asphalt in the closed co
...
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