ASTM D4402-87(2000)e1

Standard Test Method for Viscosity Determinations of Unfilled Asphalts Using the Brookfield Thermosel Apparatus

SCOPE
1.1 This test method outlines a procedure for measuring the apparent viscosity of asphalt from 100 to 500°F (38 to 260°C) using the Brookfield Thermosel apparatus.  
1.2 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. See 7.6 for specific precautionary information.

General Information

• Status: Historical
• Publication Date: 31-Dec-1999
• ICS: 91.100.50 - Binders. Sealing materials
• ICS: 93.080.20 - Road construction materials
• Technical Committee: D08 - Roofing and Waterproofing
• Drafting Committee: D08.03 - Surfacing and Bituminous Materials for Membrane Waterproofing and Built-up Roofing

Relations

• Replaced By: ASTM D4402-02 - Standard Test Method for Viscosity Determination of Asphalt at Elevated Temperatures Using a Rotational Viscometer
• Effective Date: 10-Jun-2002

Standards Content (Sample)

e1
Designation: D 4402 – 87 (Reapproved 2000)
Standard Test Method for
Viscosity Determinations of Unfilled Asphalts Using the
Brookfield Thermosel Apparatus
This standard is issued under the fixed designation D 4402; 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.
e NOTE—Editorial changes were made throughout in January 2000.
1. Scope 4. Summary of Test Method
1.1 This test method outlines a procedure for measuring the 4.1 The Brookfield Thermosel Viscometer described in this
apparent viscosity of asphalt from 38 to 260°C (100 to 500°F) procedure can be used to measure the viscosity of asphalt at
using the Brookfield Thermosel apparatus. elevated temperatures. The torque on a spindle rotating in a
1.2 This standard does not purport to address all of the special thermostatically controlled sample holder containing a
safety concerns, if any, associated with its use. It is the small sample of asphalt is used to measure the relative
responsibility of the user of this standard to establish appro- resistance to rotation. A factor is applied to the torque dial
priate safety and health practices and determine the applica- reading to yield the viscosity of the asphalt in millipascal
bility of regulatory limitations prior to use. See 7.6 for specific seconds.
precautionary information.
5. Significance and Use
2. Referenced Documents
5.1 This test method can be used to measure the apparent
2.1 ASTM Standards: viscosity of asphalts at application temperatures.
D 92 Test Method for Flash and Fire Points by Cleveland 5.2 Some asphalts may exhibit non-Newtonian behavior
Open Cup under the conditions of this test, or at temperatures within the
range of this method. Since non-Newtonian viscosity values
3. Terminology
are not unique material properties but reflect the behavior of
3.1 apparent viscosity—the ratio of shear stress to shear rate
the fluid and the measurement system, it should be recognized
for a Newtonian or non-Newtonian liquid. that measurements made by this method may not always
3.2 Newtonian liquid—a liquid for which the rate of shear is
predict performance under the conditions of use.
proportional to the shearing stress. The constant ratio of the 5.3 Comparisons between non-Newtonian viscosity values
shearing stress to the rate of shear is the viscosity of the liquid.
should be made only for measurements made with similar
If the ratio is not constant, the liquid is non-Newtonian. Many viscometers under similar conditions of shearing stress and
liquids exhibit both Newtonian and non-Newtonian behavior,
shear history.
depending on the shear rate.
6. Apparatus
3.3 viscosity—the ratio between the applied shear stress and
the rate of shear is called the coefficient of viscosity. This 6.1 Brookfield Thermosel High Temperature Viscosity Mea-
coefficient is a measure of the resistance to flow of the liquid. surement System Using a Standard Brookfield Synchro-Lectric
It is commonly called the viscosity. The SI unit of viscosity is Viscometer—Depending on viscosity range Model LV, RV,
the pascal second (Pa·s). The centimetre gram second (cgs) unit HA, or HB series may be used.
of viscosity is the poise (dynes/cm ) and is equivalent to 0.1 6.2 Spindles for Brookfield Thermosel Viscometer.
Pa·s. Frequently, centipoise (cP)—equal to one millipascal 6.3 Thermosel System:
second (mPa·s)—is used as the viscosity unit. 6.3.1 Thermo Container and Sample Chamber.
6.3.2 SCR Controller and Probe.
6.3.3 Graph Plotting Equipment.
This test method is under the jurisdiction of ASTM Committee D-8 on Roofing, 7. Procedure for the Brookfield Thermosel
Waterproofing, and Bituminous Materials and is the direct responsibility of
7.1 Read and understand the information in the instrument
Subcommittee D08.03 on Surfacing and Bituminous Materials for Membrane
manufacturer’s operating instructions before proceeding.
Waterproofing and Builtup Roofing.
Current edition approved Feb. 10, 1987. Published April 1987. Originally
7.2 Turn on Thermosel power.
published as D 4402 – 84. Last previous edition D 4402 – 84.
Annual Book of ASTM Standards, Vol 05.01.
Available from Brookfield Engineering Laboratories, Stoughton, MA 02072
Copyright © ASTM, 100 Barr Harbor Drive, West
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