ASTM D7404-07(2012)
(Test Method)Standard Test Method for Determination of Emulsified Asphalt Residue by Moisture Analyzer
Standard Test Method for Determination of Emulsified Asphalt Residue by Moisture Analyzer
SIGNIFICANCE AND USE
This test is used to indicate the compositional characteristics of emulsified asphalt and is applicable to anionic emulsified asphalts as described in Table 1 of Specification D977 and cationic emulsified asphalt as described in Table 1 of Specification D2397 except solvent-containing emulsions. The residue obtained from this test method may also be subjected to rheological characterizations.
SCOPE
1.1 1.1 This test method covers a rapid and quantitative determination of the residue in emulsified asphalts using a moisture analyzer. It is applicable to all nonsolvent-containing emulsion types.
1.2 The values stated in SI units are to be regarded as the standard.
1.3 A precision and bias statement for this test method has not been completed at this time. Therefore, this test method should not be used for acceptance or rejection of a material for purchasing purposes.
1.4 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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Standards Content (Sample)
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Designation:D7404 −07(Reapproved 2012)
Standard Test Method for
Determination of Emulsified Asphalt Residue by Moisture
Analyzer
This standard is issued under the fixed designation D7404; 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 4. Significance and Use
1.1 1.1 This test method covers a rapid and quantitative 4.1 This test is used to indicate the compositional charac-
determination of the residue in emulsified asphalts using a teristics of emulsified asphalt and is applicable to anionic
moisture analyzer. It is applicable to all nonsolvent-containing emulsified asphalts as described in Table 1 of Specification
emulsion types. D977 and cationic emulsified asphalt as described inTable 1 of
Specification D2397 except solvent-containing emulsions. The
1.2 The values stated in SI units are to be regarded as the
residueobtainedfromthistestmethodmayalsobesubjectedto
standard.
rheological characterizations.
1.3 A precision and bias statement for this test method has
not been completed at this time. Therefore, this test method
5. Apparatus
should not be used for acceptance or rejection of a material for
5.1 Glass Rods, with flame-polished ends used for stirring
purchasing purposes.
the emulsion as described in Test Method D6934.
1.4 This standard does not purport to address all of the
5.2 Moisture Balance Analyzer, equipped with a heating
safety concerns, if any, associated with its use. It is the
element and capable of running either isothermally or in a
responsibility of the user of this standard to establish appro-
programmable temperature-gradient mode.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
6. Sample Conditioning for Testing
2. Referenced Documents 6.1 All emulsified asphalts shall be properly stirred to
achieve homogeneity before testing as described in Test
2.1 ASTM Standards:
Method D6934.
D977 Specification for Emulsified Asphalt
D2397 Specification for Cationic Emulsified Asphalt
6.2 Aminimum of1gandupto3gis used to determine the
D6934 Test Method for Residue by Evaporation of Emulsi- emulsified asphalt residue.
fied Asphalt
D6997 Test Method for Distillation of Emulsified Asphalt 7. Calibration and Standardization
7.1 Follow the manufacturer’s guidelines for calibration and
3. Summary of Test Method
standardization.
3.1 A sample of emulsified asphalt is placed in an open
sample tray with an appropriate liquid transfer device capable 8. Procedure
of handling 1- to 3-mL sample sizes. The sample is heated to
8.1 Polymer-Modified Emulsified Asphalts
a preset temperature as required by emulsion type but never
8.1.1 Program the moisture analyzer for an isothermal run
exceeding 163°C to determine the percentage of asphalt
set for an end temperature of 100°C with a switch-off criterion
residue.
of 1 mg for 140 s or higher times for the highest accuracy. For
lower accuracy, set the instrument at 1 mg for 50 s or lower
timesforafasterrun.Theautomaticswitch-offcriterionisused
This test method is under the jurisdiction of ASTM Committee D04 on Road
to set the instrument’s sensitivity for higher accuracy (1 mg for
and Paving Materials and is the direct responsibility of Subcommittee D04.42 on
140 s or longer times) or for lower accuracy (1 mg for 50 s or
Emulsified Asphalt Test.
Current edition approved June 1, 2012. Published June 2012. DOI: 10.1520/
lower times).
D7404-07R12.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on The moisture balance analyzer is available commercially from different
the ASTM website. manufacturers.
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D7404−07 (2012)
8.1.2 Monitor the residue continuously and print a record at report that is desired. In some cases, a plot of the rate of water
the end of the run if a document
...
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