BENDING BEAM RHEOMETER BBR
Pressure Aging Vessel Accelerated Asphalt Aging Test Method (PAV)
STANDARD: AASHTO T313, ASTM D6648, EN14771, AASHTO TP112
The Bending Beam Rheometer BBR-1 is used to measure the low temperature flexural creep stiffness of asphalt binders, to evaluate the ability of asphalt binder to resist low temperature cracking. The test results include low temperature creep stiffness S(t) and creep stiffness change rate m(t).
Features:
Industrial panel computer control and display, real-time display of deformation curve, pressure curve and temperature curve. Equipped with LVDT calibration device, making the calibration is simple and convenient. Adopts the composite cooling mode of Peltier and chiller, the cooling speed is quick. It can drop from room temperature to -18°C in 40 minutes, the temperature control accuracy is high. The chiller is connected to the host with a hose and placed separately to prevent the vibration of the chiller from affecting the test results. A magnetic stirrer with adjustable speed is installed in the liquid bath to make the temperature more uniform. Air source pressure, pre-pressure, load pressure and air bearing pressure are digitally displayed in the software. With a USB communication port which is convenient for data export. With overload protection, fault warning and other functions. Buzzer alarm and display fault code at the same time. The base is made of stainless steel, which is easy to clean and durable. The test time can be set, which is convenient for verifying the deformation after 240s (default 240s). The time required for calculating the results can be set by software (default 8s, 15s, 30s, 60s, 120s, 240s). Two-stage air filtration prevents air impuri- ties from affecting test accuracy.
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