Standard Test Method for Determining the Flexural Creep Stiffness of Asphalt Binder Using the Bending Beam Rheometer (BBR)

Importancia y uso:

5.1 The stiffness and m-value describe the low-temperature stress-strain-time response of asphalt binders. The stiffness and m-value are fundamental material properties and may be used to characterize the linear viscoelastic behavior of asphalt binders at low temperatures.

5.2 The low-temperature thermal cracking performance of asphalt pavements is related to the stiffness and m-value of the asphalt binder contained in the mix.

5.3 The stiffness and m-value are used as performance-based specification criteria for asphalt binders in accordance with Specifications D6373 and D8239.

5.4 The bending beam rheometer is used to determine ΔT_C as defined in Practice D7643.

Note 1: The quality of the results produced by this standard are dependent on the competence of the personnel performing the procedure and the capability, calibration, and maintenance of the equipment used. Agencies that meet the criteria of Specification D3666 are generally considered capable of competent and objective testing, sampling, inspection, etc. Users of this standard are cautioned that compliance with Specification D3666 alone does not completely ensure reliable results. Reliable results depend on many factors; following the suggestions of Specification D3666 or some similar acceptable guideline provides a means of evaluating and controlling some of those factors.

Subcomité:

D04.44

Referida por:

D8239-23, D3666-26, D7643-22, D6373-23, D6626-23

Volúmen:

04.03

Número ICS:

75.140 (Waxes, bituminous materials and other petroleum products), 91.100.50 (Binders. Sealing materials)

Palabras clave:

bending beam rheometer; flexural creep compliance; flexural creep stiffness;