Bending Beam Rheometer

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TBTBBR-1 Asphalt Bending Beam Rheometer

The low-temperature shrinkage and cracking performance of asphalt pavement is related to the creep stiffness of asphalt binders and the slope of the logarithmic and time logarithmic curve of creep stiffness.

The TBTBBR-1 bending beam rheometer is a device that uses the SHRP method to test the flexural creep stiffness of asphalt binders in low-temperature conditions. As a result, it's utilized to assess asphalt binders' low-temperature cracking properties. The test results include the low-temperature creep stiffness S(t ) and creep stiffness change rate m(t) index.

Feature

Adopts industrial computer, deformation curve, pressure curve and temperature curve displayed in real time.
With LVDT calibration device which makes calibration process simple and convenient.
Dual mode of Peltier and refrigerator for cooling can realize rapid cooling from room temperature to -18°C in 40 minutes.
To reduce vibration, the refrigerator is separated from the main unit by a hose.
A magnetic stirring rotor with adjustable speed is installed in the liquid bath which makes the liquid bath temperature accurate and uniform.
The air pressure, pre-pressure, loading pressure and air axle bearing pressure can be displayed in software.
With USB communication port, data is exported easily.
With overloading alarm and fault warning alarm function. The buzzer alarms and fault code will display at the same time.
The stainless steel base box is durable and easy to clean.
The testing time can be set to verify the deformation after 240s (default: 240s).
The timing for calculating result can be set by software (8s, 15s, 30s, 60s, 120s, and 240s by default).
Two-stage high-precision air filter prevents air impurities from affecting the test accuracy.

Technical Specification

Sensors	Displacement sensor range	0~10mm
	Displacement sensor resolution	5μm
	Pressure sensor range	0~4900mN
	Pressure sensor resolution	2mN
	Temperature sensor range	-50℃~room temperature
	Temperature sensor accuracy	±0.1℃
Liquid bath	Liquid bath temperature range	-40℃~room temperature
	Temperature control accuracy	±0.1℃
	Volume	5L
	Rotating speed	25r/min
Others	Specimen size	127mmx12.7mmx6.35mm
	Top radius of specimen rack	3mm±0.3mm
	Loading axis radius	6.3mm±1.3mm Spherical contact point
	Number of specimen	1 Pc
	Creep stiffness range	20MPa~1000MPa
	Data interface	USB
Power	Host	220VAC 1kW
	Power Box	220VAC 1.8kW
	Refrigerator	220VAC 3kW
	Host dimension	Around 610mmx610mmx620mm
	Host weight	Around 80KG

TBT-0728 Bituminous Mixtures Bending Beam Creeping Apparatus

TBT-0728 bending beam rheometer is used to evaluate the deformation performance of bituminous mixtures at a specified temperature.

Technical Parameters

Loading capacity: 0~300N
Loading measuring error: ≤±0.1N
Measuring range: 0mm~20mm (mid-span deflection)
Measuring bias: ≤±0.01mm
Temperature control range: -20℃~60℃
Temperature control bias: ≤±0.1℃
Motor power: 90W
Compressor power: 1kW
Heating power: 2kW
Pump power: 45W
Communication port: RS232
Power supply: AC (220±10%)V, 50Hz
Total consumption power: 3.2kW
Outline dimension: 810×540×1300mm(LxWxH)
Net weight: 86kg