Bending Beam Rheometer (BBR)

The Bending Beam Rheometer BBR provides low-temperature stiffness and relaxation properties of asphalt binders.

The Bending Beam Rheometer BBR test provides a measure of low temperature stiffness and relaxation properties of asphalt binders. These parameters give an indication of an asphalt binder’s ability to resist low temperature cracking. The BBR is engineered to perform flexural tests on asphalt binder and similar specimens per ASTM D6648 and AASHTO T313.

These tests consist of a constant force being applied to a specimen in a chilled bath in order to derive specific rates of deformation at various temperatures. The system consists of a fluid bath base unit, a three-point bending test apparatus which is easily removed from the base unit for specimen loading and unloading, an external cooling unit with temperature controller, a calibration hardware kit with carrying case, and a PC and the testing software.

The Bending Beam Rheometer BBR can be used as part of your Superpave performance based testing program.

• Durable, corrosion-resistant construction
• Computerized control, data acquisition and analysis
• PID temperature controller with digital display
• Two independent platinum RTDs for precise temperature control
• Mechanically-refrigerated cooling bath with environmentally-safe non-CFC coolant
• Integral LVDT and temperature compensated load cell for accurate test results
• Includes complete calibration kit with carrying case
• Includes ASTM/AASHTO-compliant specimen molds
• PC and software included