AASHTO T 313-08 Download


Standard Method of Test for Determining the Flexural Creep Stiffness of Asphalt Binder Using the Bending Beam Rheometer (BBR)
standard by American Association of State and Highway Transportation Officials, 08/01/2008



This test method covers the determination of the flexural creep stiffness or compliance of asphalt binders by means of a bending beam rheometer. It is applicable to material having a flexural stiffness value from 20 MPa to 1 GPa and can be used with unaged material or with material aged using T 240 (RTFOT) and/or R 28 (PAV). The test apparatus is designed for testing within the temperature range from -36 to 0°C.

Test results are not valid for beams of asphalt binder that deflect more than 4 mm, or less than 0.08 mm, when tested in accordance with this method.

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