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Bitumen

Dynamic Shear Rheometer DSR

Rheological properties of asphalt binders

AASHTO T315 | ASTM D7175 | ASTM D7405 | EN 14770
Main features
  • Designed specifically for Asphalt Testing
  • Optimized for high throughput
  • Meets and exceeds AASHTO T315 and all ASTM requirements
  • Simple to use, proven design
  • Precise and stable temperature control (patented)
  • Rapid sample equilibrium to set temperature
  • Significant reduction in need for regular re-calibration of temperature
  • Pre set gaps for AASHTO tests - no zeroing necessary
  • Automatic Expansion Compensation keeps gap constant with temperature
  • Compact, integrated unit with small footprint
  • Dedicated AASHTO specification software package 
  • Integrated fluid immersion cell specifically based on patented principle for temperature control of highly thermallysensitive asphalt or bitumen samples
  • Rapid thermal equilibration and elimination of thermal gradients in the sample - essential for consistent and reliable data, and optimized sample throughput
  • Excellent temperature stability and accuracy, with a resolution of ± 0.01°C
  • Rapid, robust manual gap set, with pre-set gaps for AASHTO tests for simplicity of use
  • Active thermal mode to ensure constant gap is maintained for all temperature test points
  • Plate measuring systems designed to comply with industry Standards (AASHTO)
  • Optional research grade software
General description
General description
The Dynamic Shear Rheometer (DSR) is used for the determination of the viscous and elastic behavior of asphalt binders at medium to high temperatures. This characterization is used in the Superpave PG asphalt binder specification. As with other Superpave binder tests, the actual temperatures anticipated in the area where the asphalt binder will be placed determine the test temperatures used .
 
The DSR test uses a thin asphalt binder sample sandwiched between two circular plates. The lower plate is fixed while the upper plate oscillates back and forth across the sample to create a shearing action. DSR tests are conducted on unaged, RTFO aged and PAV aged asphalt binder samples. The test is largely software controlled.

Compact integrated unit designed specifically for ease of use and robustness in high throughput asphalt binder test environments. Air bearing and mechanical bearing options to provide robust and cost- effective measurement platforms for any industrial laboratory or remote field testing location.
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Technical specifications

Model 81-PV6002
Conforming to Standard ASTM D7175
ASTM D7405
AASHTO T315
EN 14770
Torque range 10 μNm to 10 mNm
Torque range
(mechanical bearing model)
50 μNm to 10 mNm
Torque resolution 1μNm
Position resolution 1μrad
Frequency range 10μHz to 100 Hz
Temperature control range
(total immersion cell)
5°C to 95°C
(range can be extended depending on circulator fluid)
Temperature accuracy
(total immersion cell)
better than ±0.1°C
Operating humidity from 35% to 80% non-condensing
Operating temperature from 15°C to 40°C
Nominal operating voltage 110 V or 220 V
Weight
(with temperature control unit)
18 kg
Dimensions (h x w x d)
(with temperature control unit)
with temperature control unit
600 x 230 x 350 mm 

Test load
  • Variable test range from 0 to 200 g standard
  • System maintains required test load to within +/- 0.5 g throughout the test cycle

Ordering info

81-PV6002
DSR Dynamic Shear Rheometer
110-220 V, 50-60 Hz, 1 ph.

Accessories

81-PV6000/1
Kit for multiple stress creep recovery (MSCR) test to ASTM D7405

81-PV6000/2
Two silicone rubber moulds for DSR

Additional Information

Dedicated AASHTO specification software package including:
  • Pass/Fail medium temperature original binder test (T315-11)
  • Pass/Fail high temperature RTFO binder(T315-11)
  • Pass/Fail high temperature PAV binder(T315-11)
  • Linearity test (T315-12) - Grade determination test (R29-02)
  • Optional research grade software (see accessories)
Testing software
  • 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

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