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AASHTO T313-2025: Determining the Flexural Creep Stiffness of Asphalt Binder Using the Bending Beam Rheometer (BBR)

Tester's full name *

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Date of test *

____ / ____ / ____ (Month / Day / Year)

Paired test specimens performed? *

Yes No (Circle One)

BBR Software for individual test specimens *

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Maximum test bath temperature at 240 S *

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Minimum test bath temperature at 240 S *

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Time of test load application *

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File name of test data *

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Time test specimen in bath *

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Time test started *

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Flags issued by software during test

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Correlation coefficients and least square fit R² value *

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Comments

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Regression coefficient a *

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Regression coefficient b *

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Regression coefficient c *

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Load at time 0.0

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Deflection at time 0.0 s

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Load at time 0.5 s

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Deflection at time 0.5 s

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Loading time 8.0 s *

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Load at 8.0 s *

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Test specimen deflection 8.0 s *

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Measured Stiffness Modulus 8.0 s *

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Estimated Stiffness Modulus 8.0 s *

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Difference between stiffness moduli 8.0 s *

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Estimated m-value 8.0 s *

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Loading time 15.0 s *

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Load at 15.0 s *

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Test specimen deflection 15.0 s *

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Measured Stiffness Modulus 15.0 s *

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Estimated Stiffness Modulus 15.0 s *

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Difference between stiffness moduli 15.0 s *

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Estimated m-value 15.0 s *

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Loading time 30.0 s *

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Load at 30.0 s *

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Test specimen deflection 30.0 s *

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Measured Stiffness Modulus 30.0 s *

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Estimated Stiffness Modulus 30.0 s *

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Difference between stiffness moduli 30.0 s *

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Estimated m-value 30.0 s *

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Loading time 60.0 s *

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Load at 60.0 s *

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Beam deflection 60.0 s *

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Test specimen deflection 60.0 s *

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Measured Stiffness Modulus 60.0 s *

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Estimated Stiffness Modulus 60.0 s *

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Difference between stiffness moduli 60.0 s *

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Estimated m-value 60.0 s *

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Loading time 120.0 s *

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Load at 120.0 s *

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Test specimen deflection 120.0 s *

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Measured Stiffness Modulus 120.0 s *

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Estimated Stiffness Modulus 120.0 s *

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Difference between stiffness moduli 120.0 s *

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Estimated m-value 120.0 s *

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Loading time 240.0 s *

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Load at 240.0 s *

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Test specimen deflection 240.0 s *

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Measured Stiffness Modulus 240.0 s *

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Estimated Stiffness Modulus 240.0 s *

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Difference between stiffness moduli 240.0 s *

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Estimated m-value 240.0 s *

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General comments (publicly viewable) (Max 1000 characters)

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Project test result compliance comments (Max 1000 characters)

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Test result compliancecomplies does not comply not applicable (Circle One)