ASTM D6936-04

Standard Test Method for Determining Demulsibility of Emulsified Asphalt

SIGNIFICANCE AND USE
This test method is used to identify or classify an emulsified asphalt as an RS or MS by measuring the amount of available asphalt that is broken from the emulsified asphalt by utilizing specified amounts and concentrations of calcium chloride solution for anionic emulsified asphalts and dioctyl sodium sulfosuccinate for cationic emulsified asphalts.
SCOPE
1.1 This test method, applicable to both anionic and cationic emulsified asphalts of the RS and MS type, measures the chemical breaking of the emulsified asphalt.
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.

General Information

• Status: Historical
• Publication Date: 31-Jul-2004
• ICS: 93.080.20 - Road construction materials
• Technical Committee: D04 - Road and Paving Materials
• Drafting Committee: D04.42 - Emulsified Asphalt Test

Relations

• Replaced By: ASTM D6936-09 - Standard Test Method for Determining Demulsibility of Emulsified Asphalt
• Effective Date: 01-Jun-2009
• Referred By: ASTM D244-09(2017) - Standard Test Methods and Practices for Emulsified Asphalts
• Effective Date: 01-Aug-2004
• Referred By: ASTM D977-20 - Standard Specification for Emulsified Asphalt
• Effective Date: 01-Aug-2004
• Referred By: ASTM D2397/D2397M-20 - Standard Specification for Cationic Emulsified Asphalt
• Effective Date: 01-Aug-2004

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D 6936 – 04
Standard Test Method for
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Determining Demulsibility of Emulsified Asphalt
This standard is issued under the fixed designation D 6936; 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 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 Thistestmethod,applicabletobothanionicandcationic
sample container to achieve homogeneity.
emulsified asphalts of the RS and MS type, measures the
chemical breaking of the emulsified asphalt.
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 Wire Cloth—1.40-mm wire cloth that is at least 125 mm
2. Referenced Documents square, unframed, and having wire diameters and openings that
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conform to Specification E 11.
2.1 ASTM Standards:
5.2 Beaker—metal beaker of nominal 600-mL capacity.
E 11 Specification for Wire-Cloth and Sieves for Testing
5.3 Stirring Rod—metal rod with rounded ends, approxi-
Purposes
mately 10 mm in diameter.
D 511 Test Methods for Calcium and Magnesium in Water
5.4 Buret—s 50-mL glass buret graduated in 0.1 mL inter-
D 6934 Test Method for Residue by Evaporation of Emul-
vals.
sified Asphalt
5.5 Calcium Chloride Solution (1.11 g/L)—1.11 g of cal-
D 6997 Test Method for Distillation of Emulsified Asphalt
cium chloride (CaCl ) dissolved in distilled or deionized water
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3. Significance and Use
and dilute to 1 L. The 1.11 g/L calcium chloride solution may
be standardized to be a 0.02 6 0.001 N solution of calcium
3.1 This test method is used to identify or classify an
chloride in water. Although this solution will remain stable, it
emulsified asphalt as an RS or MS by measuring the amount of
shall be stored in an airtight container when not in-use.
available asphalt that is broken from the emulsified asphalt by
5.6 Calcium Chloride Solution (5.55 g/L)—5.55 g of cal-
utilizing specified amounts and concentrations of calcium
cium chloride (CaCl ) dissolved in distilled or deionized water
chloride solution for anionic emulsified asphalts and dioctyl 2
and dilute to 1 L. The 5.55 g/L calcium chloride solution may
sodium sulfosuccinate for cationic emulsified asphalts.
be standardized to be a 0.10 6 0.001 N solution of calcium
4. Sample Conditioning for Testing
chloride in water. Although this solution will remain stable, it
shall be stored in an airtight container when not in-use.
4.1 All emulsified asphalts shall be properly stirred to
achieve homogeneity before testing.
NOTE 2—Test Methods D511 is a method that could be used to
4.2 All emulsified asphalts with viscosity testing require-
standardize the solutions in 5.5 and 5.6.
ments of 50°C shall be heated to 50 6 3°C in the original
5.7 Dioctyl Sodium Sulfosuccinate Solution (0.80 %)—8.00
sample container in a water bath or oven. The container should
g of dioctyl sodium sulfosuccinate dissolved in 992 g of
be vented to relieve pressure. After the sample reaches 50 6
distilled or deionized water. This solution will degrade over
3°C, stir the sample to achieve homogeneity.
time and shall be stored in a cool dark location when not
in-use,inadarkglassair-tightcontainer.Itshallnotbeusedfor
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This test method is under the jurisdiction of ASTM Committee D04 on Road
testing purposes if more than 90 days have elapsed since it was
and Paving Materials and is the direct responsibility of Subcommittee D04.42 on
prepared.
Emulsified Asphalt Tests.
Current edition approved Aug. 1, 2004. Published August 2004.
NOTE 3—A test method that could be used to standardize this solution
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
can be found in “The United States Pharmacopeia, The National Formu-
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
lary” under the section on Docusate Sodium (444.56) as recommended by
Standards volume information, refer to the standard’s Document Summary page on
Cytec Industries (a manufacturer of this material).
the ASTM website.
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