ASTM D5801-95

Standard Test Method for Toughness and Tenacity of Bituminous Materials

SCOPE
1.1 This test method describes the procedure for measuring the toughness and tenacity of bituminous materials. Typically, the test method has been used to characterize elastomer modified asphalts, although values for toughness and tenacity may be obtained for any type of polymer-modified or non-modified asphalt.  
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.  
1.3 The values given in SI units are to be regarded as the standard. The values given in inch-pound units in parentheses are for informational purposes only.

General Information

• Status: Historical
• Publication Date: 09-Oct-1995
• Technical Committee: D04 - Road and Paving Materials
• Drafting Committee: D04.44 - Rheological Tests

Relations

• Replaced By: ASTM D5801-95(2001) - Standard Test Method for Toughness and Tenacity of Bituminous Materials
• Effective Date: 10-Oct-1995

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NOTICE: This standard has either been superseded and replaced by a new version or
withdrawn.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 5801 – 95
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Test Method for
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Toughness and Tenacity of Bituminous Materials
This standard is issued under the fixed designation D 5801; 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 cement has been modified with a material that provides a
significant elastomeric component. Elastomer modified as-
1.1 This test method describes the procedure for measuring
phalts can be characterized by their ability to be stretched to a
the toughness and tenacity of bituminous materials. Typically,
large elongation while at the same time resisting further
the test method has been used to characterize elastomer
stretching. Toughness and tenacity are two parameters for
modified asphalts, although values for toughness and tenacity
measuring this ability.
may be obtained for any type of polymer-modified or non-
modified asphalt.
5. Apparatus
1.2 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the 5.1 Sample Container—A metal, cylindrical, flat bottom
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responsibility of the user of this standard to establish appro- container with a nominal inside diameter of 55 mm (2 ⁄8 in.)
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priate safety and health practices and determine the applica- and a depth of 35 mm (1 ⁄8 in.) shall be used to hold the sample.
bility of regulatory limitations prior to use. Containers known as tin boxes or seamless ointment boxes
1.3 The values given in SI units are to be regarded as the with a 3-oz capacity meet these requirements.
standard. The values given in inch-pound units in parentheses 5.2 Tension Head—The tension head shall consist of a
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are for informational purposes only. polished metal, hemispherical head with an 11 mm ( ⁄16 in.)
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radius, which is integrally connected to a 6.4 mm ( ⁄4 in.)
2. Referenced Documents
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diameter stem approximately 33 mm (1 ⁄16 in.) long. The stem
2.1 ASTM Standards:
shall be threaded and fitted with a knurled lowering screw to
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D 5 Test Method for Penetration of Bituminous Materials
allow for accurate adjustment of the tension head height in the
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E 1 Specification for ASTM Thermometers
sample container. The stem of the tension head shall be fitted
with a small pin to prevent twisting of the head while adjusting
3. Summary of Test Method
the height. Dimensions of the tension head are shown in Fig. 1
3.1 A tension head of specified size and shape is pulled from
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an asphalt sample at a rate of 50 cm/min (20 in./min). A
continuous record of the force versus elongation curve is made
NOTE 1—Brass and stainless steel are acceptable metals for construct-
and used to calculate the toughness and the tenacity of the ing tension heads. Aluminum scratches easily and steel rusts, so these
metals should not be used.
sample. The test is run at room temperature (25 6 3°C [77 6
5°F]), after the sample has been subjected to a specified
5.3 Spider—The support for the tension head shall consist
temperature history.
of a cylindrical center section through which the stem of the
3.2 Toughness is defined in this procedure as the total work
tension head may freely move parallel to the axis of the
required to completely separate the tension head from the
cylinder. The inner wall of the cylinder shall be grooved to
sample under the specified test conditions. Tenacity is a
receive the pin mounted on the stem of the tension head. The
measure of the increasing force as the sample is stretched past
spider cylinder shall be fitted with three arms, equally spaced
the initial peak, and may indicate the type and amount of
at 120 degrees, extending from the center and notched to
polymer used to modify the asphalt. It is defined as the work
receive the lip of the sample container, thereby centering the
required to stretch the material after the initial resistance is
spider and tension head in the sample container. Details of the
overcome.
spider construction are shown in Fig. 2 .
5.4 Testing Machine—Any tensile tester capable of pulling
4. Significance and Use
the tension head at a uniform rate of 50 cm/min (20 in./min),
4.1 This test method is useful in confirming that an asphalt
and recording the force versus elongation curve, may be used.
The accuracy of the pull rate shall be 62 % or better. The
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This test method is under the jurisdiction of ASTM Committee D-4 on Road
maximum load capacity shall be at least 45 kg (100 lb). If
and Paving Materials and is the direct responsibility of Subcommittee D04.44
...