The bending beam rheometer (BBR) performs flexural tests on asphalt binder and similar specimens per tests, initially developed by the Strategic Highway Research Program (SHRP), which consist of a constant force being applied to a specimen in a chilled fluid bath in order to derive specific rates of deformation at various temperatures. The complete BBR system consists of a fluid bath base unit, a three-point bend test apparatus, which is easily removed from the base unit for specimen 加载 and un加载, an external cooling unit with temperature controller and a calibration hardware kit with carrying case. The unit features an integral, stainless steel load frame and in-line, blunt-point 加载 shaft. 大, easy-to-read digital display shows load, 位移, and bath temperature for ease of setup and operation. 实时位移, 加载, and temperature graphs are displayed during the test cycle and can be re-plotted and re-scaled as needed for easy viewing.
The BBR uses a linear, variable-位移 transducer (线性可变) with a range of 6.35mm and accuracy to ±2mm measures deflection. The temperature-compensating 500g load cell with mechanical overload protection ensures accurate load results. 安全, rapid cooling of the ethylene glycol mixture test fluid to -40° to 25°C is provided by a mechanical refrigeration system. Process temperature is controlled and monitored by two, 独立的, platinum RTD temperature transducers maintaining temperature stability.
The BBR comes with a pre-loaded software package, which allows for device configuration, 每日核对, 测试设置, 测试开始, 和报告. It also includes five aluminum specimen molds with mylar strips, a 校准 Kit with required weights, 自信之光. Calibrated test weights and a certified 线性可变 (NIST-traceable). The easy-to-use software allows daily verification and periodic calibration of load cell, 线性可变, 和RTD传感器
维度: 49" x 49" x 41" (1,245 x 1,245 x 1,040mm). An adequate compressed air source must be supplied by user.
