Standard Test Method for Oversized Particles in Emulsified Asphalts (Sieve Test)

SIGNIFICANCE AND USE
The retention of an excessive amount of particles on the sieve indicates that problems may occur in handling and application of the material. Particles of asphalt retained on the sieve often are caused by agglomeration of the dispersed phase. Storage, pumping, handling, and temperature can all contribute to the formation of particles. Contamination from the tank, transport, or hose are other factors affecting particle formation.
SCOPE
1.1 This test method covers the degree to which an emulsified asphalt may contain particles of asphalt or other discreet solids retained on a 850-m mesh sieve.
1.2 This test method 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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Publication Date
31-Jul-2004
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ASTM D6933-04 - Standard Test Method for Oversized Particles in Emulsified Asphalts (Sieve Test)
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D 6933 – 04
Standard Test Method for
Oversized Particles in Emulsified Asphalts (Sieve Test)
This standard is issued under the fixed designation D 6933; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 4.3 Emulsified asphalts with viscosity testing requirements
of 25°C should be mixed or stirred at 25 6 3°C in the original
1.1 This test method covers the degree to which an emulsi-
sample container to achieve homogeneity.
fied asphalt may contain particles of asphalt or other discreet
solids retained on a 850-µm mesh sieve.
NOTE 1—Emulsified asphalts with viscosity testing requirements of
1.2 This test method does not purport to address all of the 25°C may be heated and stirred as specified in 4.2, if necessary. In the
event the 4.2 method is used, the sample should be cooled to 25 6 3°C
safety concerns, if any, associated with its use. It is the
before testing.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
5. Apparatus and Reagents
bility of regulatory limitations prior to use.
5.1 Sieve—A sieve having a 76.2-mm frame conforming to
2. Referenced Documents Specification E 11, and having a 850-µm wire sieve cloth.
5.2 Pan—A tin box cover or shallow metal pan of appro-
2.1 ASTM Standards:
priate size to fit over the bottom of the standard sieve.
D 88 Test Method for Saybolt Viscosity
5.3 Thermometers—ASTM 17C for tests at 25ºC and
E 1 Specification for ASTM Thermometers
ASTM 19C for tests at 50ºC, conforming to the requirements
E 11 Specification for Wire Cloth and Sieves for Testing
of Specification E 1, or any other thermometric device of equal
Purposes
accuracy.
3. Significance and Use
5.4 Nonionic Surfactant Solution (1 %)—1 g of nonionic
surfactant (ethoxylated nonylphenol is recommended) dis-
3.1 The retention of an excessive amount of particles on the
solved in distilled water and diluted to 100 mL.
sieve indicates that problems may occur in handling and
5.5 Distilled or Deionized Water
application of the material. Particles of asphalt retained on the
5.6 Balances—capable of weighing 2000 g to within 61g,
sieveoftenarecausedbyagglomerationofthedispersedphase.
and 500 g to within 60.1 g.
Storage, pumping, handling, and temperature can all contribute
5.7 Oven—Capable of maintaining temperature of 105 6
to the formation of particles. Contamination from the tank,
5°C.
transport, or hose are other factors affecting particle formation.
5.8 Desiccator .
4. Sample Conditioning for Testing
6. Procedure
4.1 All emulsified asphalts shall be properly stirred to
6.1 The temperature at which the sieve test shall be per-
achieve homogeneity before testing.
formedisrelatedtotheemulsifiedasphalt’sviscosity.Forthose
4.2 All emulsified asphalts with viscosity testing require-
materials whose viscosity in saybolt furol seconds as deter-
ments of 50°C shall be heated to 50 6 3°C in the original
mined by Test Method D 88 is 100 s or less at 25°C, perform
sample container in a water bath or oven. The container should
the test at ambient temperature. For those materials whose
be vented to relieve pressure. After the sample reaches 50 6
viscosity is more than 100 s at 25°C and those whose viscosity
...

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