SHRP-A-379 traducir

Standard Method of Test for
Determining the Fracture Properties of
Asphalt Binder in Direct Tension
AASHTO Designation: TP3 _
1. SCOPE
1.1 This test method covers the determination of the failure strain and failure stress
of asphalt binders by means of a direct tension test. It is applicable to material that has a
failure strain less than 10% and can be used with unaged material or with material aged
using T240 (RTFOT), T179 (TFOT), or PP1 (PAV). The test apparatus is designed for
testing within the temperature range from -40°C to 25°C.
1.2 This test method is limited to asphalt binders that contain particulate material less
than 250/_m in diameter.
1.3 This test method is not valid for specimens that exhibit a strain to failure outside
the defined brittle-ductile range (_> 10%).
1.4 The values stated in SI units are to be regarded as the standard.
1.5 This standard may involve hazardous materials, operations, and equipment. This
standard does not purport to address all of the safety problems associated with its use. It is
the responsibility of the user of this procedure to establish appropriate safety and health
practices and to determine the applicability of regulatory limitations prior to use.
2. REFERENCE DOCUMENTS
2.1 AASHTO Standards:
MP1 Specification for Performance-Graded Asphalt Binder
PP1 Practice for Accelerated Oxidative Aging of Asphalt Binder
Using a Pressurized Aging Vessel
T40 Practice for Sampling Bituminous Materials
1Thisstandardis basedon SHRPProduct1005.
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