Materiaaltesten Fundering  Bending Beam Rheometer BBR

Bending Beam Rheometer BBR

Description

The Bending Beam Rheometer (BBR) test (see Figure 1) 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. - See more at: http://www.pavementinteractive.org/article/bending-beam-rheometer/#sthash.NocVgDFH.dpuf

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.


The Bending Beam Rheometer (BBR) System consists of a fluid bath base unit, a three-point bending test apparatus which is easily removed from the base unit for specimen loading and unloading, an external cooling unit with temperature controller, and a calibration hardware kit with carrying case. The system includes a PC and the testing software.


The Bending Beam Rheometer BBR can be used as part of your Superpave performance based testing program.

  • Durable, corrosion-resistant construction
  • Computerized control, data acquisition and analysis
  • PID temperature controller with digital display
  • Two independent platinum RTDs for precise temperature control
  • Mechanically-refrigerated cooling bath with environmentally-safe non-CFC coolant
  • Integral LVDT and temperature compensated load cell for accurate test results
  • Includes complete calibration kit with carrying case
  • Includes ASTM/AASHTO-compliant specimen moulds
  • PC and software included

Label/Normering

  ASTM D6648‰AASHTO T313‰EN 14771

Technische specificaties

Technical Specifications

Models81-PV5902
81-PV5904
Conforming
 to Standard		ASTM D6648
AASHTO T313
EN 14771
Machine control byPC (included) with dedicated software
Load FrameIntegral stainless steel frictionless construction
Loading shaftIn-line stailess steel with blunt point
Test LoadVariable test range from 0 to 200 g standard.
System maintains required test load to within ±0.5 g throughout the  test cycle
Test Cycle TimesCycle times for pre-load, recovery, and test load are completely operator- adjustable
Load cell500 g (temperature-compensated)
Mechanical overload
protection		Standard
Test weightsCalibrated and traceable
Sample supports25 mm (0.98 in.) diameter stainless steel spaced
101.6 mm (4.00 in.) apart
LVDT displacement
transducers		6.35 mm (0.25 in.) calibrated range to provide 2 μm resolution throughout testing and verification range
Testing Software FeaturesLarge on-screen display of load, displacement and bath temperature provides ease of setup and operation. Real-time displacement, loading, and temperature graphs are displayed during the test cycle and can be re-scaled as needed for easy viewing
Cooling UnitIncluded (non-CFC refrigerant)
Recommended Cooling
Bath fluid		Non-flammable ethylene glycol mixture
Operating temperatureAmbient to -40° C (-40°F)
Temperature MeasurementPlatinum RTD
Compressed air requirement0.34 MPa (50 psi) clean, dry air supply required
Weightapprox. 115 kg

Order nummers

81-PV5902:

Bending Beam Rheometer (BBR)conforming to ASTM D6648, AASHTO T313 and EN 14771. 230V/50-60Hz/1ph

81-PV5904:

Bending Beam Rheometer (BBR) conforming to ASTM D6648, AASHTO T313 and EN 14771. 110V/60Hz/1ph

Accessoires & toebehoren

 

86-D2015: Laboratory air compressor. 8 BAR max constant pressure. 230V/50Hz/1Ph 81-PV059/1: Set of five BBR aluminium beam moulds 81-PV059/2: Set of 36 plastic strips for BBR specimen moulds.

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