The Bending Beam Rheometer (BBR) is a specialized laboratory instrument used to evaluate the low-temperature cracking resistance of asphalt and asphalt binders. By measuring the flexural creep stiffness of asphalt under controlled low-temperature conditions, the BBR helps determine the material’s performance and durability in cold climates. This equipment is widely used in highway engineering laboratories, research institutes, and material testing laboratories for asphalt performance evaluation and quality control.

Bending Beam Rheometer

Model:TD327-3

I. Product Introduction:

The TD327-3 Bending Beam Rheometer (BBR) is designed by Hebei Tianqixingzi Inspection Equipment Co.,Ltd.in accordance with ASTM D6648-01 and AASHTO T313-02 standards. It is used to perform flexural creep tests on asphalt binders and similar specimens. These tests were originally developed under the Strategic Highway Research Program (SHRP) in the United States. The method applies a constant load to specimens immersed in a cold liquid, allowing measurement of their deformation rate at different temperatures.

A complete BBR system includes a water bath, a three-point bending test system, an external temperature-controlled cooling unit, and a set of calibration tools. The three-point bending test system can be easily removed from the water bath for specimen installation and removal. Furthermore, the BBR has been redesigned according to the latest revised ASTM and AASHTO specifications. The new design includes upgradeable and improved software and functionality, making the BBR safer, simpler, and more accurate.

II. Features and Parameters:

PID temperature control with digital display;

Two independent platinum resistance thermometers (RTDs) enable precise temperature control;

Cfluorine-free, environmentally friendly mechanically refrigerated water bath;

Built-in LVDT displacement sensor and temperature-compensated force sensor.

Test load: Standard adjustable from 0 to 200g, maintaining an accuracy of ±0.5g during testing;

Test cycle: Preload, recovery, and the test loading cycle are fully user-defined;

Force sensor: 500g (temperature compensated);

Mechanical overload protection: Standard;

Displacement sensor: 6.35mm, resolution 2μm within calibration range;

Cooling unit: CFC-free mechanical refrigeration device;

Recommended water bath liquid: Ethylene glycol, volume: 7.57L;

Operating temperature: Ambient temperature to -40℃.