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Bending Beam Rheometer (BBR)
ASTM D6648 | AASHTO T313 | EN 14771
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 Bending Beam Rheometer (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.
Technical parameters
| Item number | A034 |
| Cylinder Pressure | 1MPa |
| Specimen loading load | 0 ~ 3000 mN |
| Cylinder stroke | 200 mm |
| displacement sensor range | 20 mm 3 ‰ Precision FS |
| Temperature Control Range | - 20 ~ 60 °C accuracy of 0.1 °C |
| Specimen size | Lenghth 127 mm * thickness 6.35 mm * width 12.7 mm |
| Environment cabinet internal dimension | length 300 mm * 270 mm * wideth 270 mm * height 300 |
| Boundary Dimension | Length 500 mm *width 700 mm * height700 mm |
| Refrigeration power | 1.5 P |
| Heating power | 800 w |
| Power supply voltage | 220 V |
| Silent air compressor(built-in) | 1 KW, 220 V |
Usage
Asphalt bend creep tester connect to a computer, after instal the procedure, it will control the whole testing process automatically(including loading, protection, testing, judgment and uninstall). Automaticly collect the data of pressure and deformation, display and print the pressure and displacement curves graphics, the software can be updated for free. Using built-in cooling compressor, ensure the environmental cabinet temperature is constant. Vertical Loadig method can avoid the malpractice of not constanct loding caused by the structure is not reasonable, reliable performance.
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