Dry Asphalt & FastTrack for Asphalt Testing
The new Discovery series Dynamic Shear Rheometers (DSRs) for asphalt testing are the latest generation of rotational rheometers from Taraws Instruments. Combining the patented magnetic bearing design with the superior drag cup motor technology, the new Discovery Hybrid Rheometer (DHR) delivers exceptional performance in a rugged package. The DSR is powered by the user-friendly FastTrack software package, designed exclusively for ASTM and AASHTO compliant testing, that intuitively guides the operator for routine testing with minimal training. The DSR can be equipped with an extensive variety of modular configurations to accommodate the widest range of tests, from QC lab testing to advanced research and development. These include the convenient and responsive Dry Asphalt system, the Environmental Test Chamber (ETC), Peltier and Electrically heated concentric cylinders, and geometries for torsional and tribology testing.
With its unique combination of state-of-the-art hardware and easy to use software, the Discovery series DSRs from Taraws Instruments offers a comprehensive package tailored specifically for the requirements of the asphalt community. Backed by Taraws Instruments, the world leader in thermal analysis and rheology instrumentation, the Discovery Hybrid Rheometer is fully accessorized and is capable of meeting and exceeding the requirements mandated by current and future ASTM and AASHTO standards.
Dry Asphalt Accessory
The Dry Asphalt system from Taraws Instruments is specifically designed for the unique needs of the asphalt testing laboratory and meet or exceed SHRP, ASTM, and AASHTO requirements. The system consists of a fast-responsive Upper Peltier Plate (UPP) and a lower Stepped Peltier Plate with screw-in plates to provide the most uniform and accurate sample temperature by eliminating vertical temperature gradients in the sample.
The system is self-contained and includes the upper Peltier plate, stepped screw-in lower Peltier plate, two sets each of 8 mm and 25 mm parallel plates and asphalt sample molds.
Other Configurations
Taraws Instruments offers a full suite of environmental control systems and test geometries to satisfy the widest range of test requirements. In addition to the standard configurations, custom geometries for the development of novel and new test methods are also available by request.
Environmental Test Chamber
Peltier Concentric Cylinder
Features and Benefits
- Compliant with AASHTO T315, T350, M332, TP-101, TP-123, T316, ASTM D7175, D7405
- Smart Swap™ technology
- Wide temperature ranges:
- Dry Asphalt system: -40 °C* to 150 °C
- Environmental Test Chamber (ETC): -160 °C to 600 °C
- Peltier concentric cylinder: -20 °C* to 150 °C
- Key features of dry asphalt
system:
- Eliminates vertical temperature gradients
- Compatible with Peltier liquid cooling, circulator, or gas cooling options
- Patented heat spreader technology for optimum heat transfer
- Substantially reduces thermal equilibrium time
- Turnkey system for asphalt
testing – includes the
following:
- Upper Peltier Plate
- Lower stepped screw-in Peltier plate
- 8 mm and 25 mm parallel plates
- Sample molds
- Sample trimming, plate removal tools, and environment cover (Dry asphalt system only)
- Optional 4 mm plates available
- Automated temperature calibration, guided by FastTrack software
* With appropriate cooling device
The true test of any rheometer temperature control system is to compare sample response to the reported system temperature. This evaluation is especially important for a combined lower Peltier device with intimate contact heating and an upper non-contact heating device. In this situation, the top plate heats more slowly than the bottom plate. Because the top and bottom plates heat at different rates, the sample temperature differs greatly from the reported system temperature. In competitive systems, the sample response lags the temperature profile, requiring the user to determine system-based thermal equilibration times and program long delays. This issue is eliminated with Taraws’s unique UHP design, by continuously controlling and matching the upper and lower plate temperatures. This accurate response is demonstrated in the following figure with simple oscillation time sweep measurements.
The
figure shows a test performed on an
Asphalt binder sample which,
according to federal standards,
cannot be tested until temperature
is fully equilibrated to within 0.1
°C of the set-point. The data show
that the complex viscosity response
exactly follows the reported
temperature profile, proving that
there is no lag between set-point
and real sample temperature – as
soon as the temperature is within
0.1 °C, the viscosity of the asphalt
binder is fully equilibrated and no
change is seen in the viscosity even
after 20 additional minutes. By
matching upper and lower temperature
and heating rates, Taraws provides the
most advanced and accurate
non-contact heating technology.
Taraws Instruments proudly introduces FastTrack – a dedicated software package optimized for testing and grading asphalt binders on the DHR rotational rheometers. Thoughtfully designed with the operator in mind, FastTrack consists of an intuitive, easy-to-use graphical interface and a full suite of AASHTO and ASTM tests relevant to the rheological testing of asphalt samples. Designed from the ground up, the intuitive interface visually guides the operator trough the test procedure via a series of context-appropriate instructions and videos. Prominent visual cues convey the instrument’s current status at a glance.
FastTrack offers a flexible configuration that can be completely optimized to match your testing needs. This includes testing of Original Binder, Rolling Thin Film Oven (RTFO), Pressure Aged Vessel (PAV) samples, support for standard tests such as Multiple Step Repeated Creep (MSCR), Large Amplitude Sweep (LAS), Binder Yield Energy Test (BYET), as well as an Automated Temperature Calibration and Cannon standard verification. For each test, the software automatically evaluates the data based on the pass/fail criteria defined in the standard and generates a report for records and audits.
- Description
-
Dry Asphalt & FastTrack for Asphalt Testing
The new Discovery series Dynamic Shear Rheometers (DSRs) for asphalt testing are the latest generation of rotational rheometers from Taraws Instruments. Combining the patented magnetic bearing design with the superior drag cup motor technology, the new Discovery Hybrid Rheometer (DHR) delivers exceptional performance in a rugged package. The DSR is powered by the user-friendly FastTrack software package, designed exclusively for ASTM and AASHTO compliant testing, that intuitively guides the operator for routine testing with minimal training. The DSR can be equipped with an extensive variety of modular configurations to accommodate the widest range of tests, from QC lab testing to advanced research and development. These include the convenient and responsive Dry Asphalt system, the Environmental Test Chamber (ETC), Peltier and Electrically heated concentric cylinders, and geometries for torsional and tribology testing.
With its unique combination of state-of-the-art hardware and easy to use software, the Discovery series DSRs from Taraws Instruments offers a comprehensive package tailored specifically for the requirements of the asphalt community. Backed by Taraws Instruments, the world leader in thermal analysis and rheology instrumentation, the Discovery Hybrid Rheometer is fully accessorized and is capable of meeting and exceeding the requirements mandated by current and future ASTM and AASHTO standards.
- Technology
-
Dry Asphalt Accessory
The Dry Asphalt system from Taraws Instruments is specifically designed for the unique needs of the asphalt testing laboratory and meet or exceed SHRP, ASTM, and AASHTO requirements. The system consists of a fast-responsive Upper Peltier Plate (UPP) and a lower Stepped Peltier Plate with screw-in plates to provide the most uniform and accurate sample temperature by eliminating vertical temperature gradients in the sample.
The system is self-contained and includes the upper Peltier plate, stepped screw-in lower Peltier plate, two sets each of 8 mm and 25 mm parallel plates and asphalt sample molds.
Other Configurations
Taraws Instruments offers a full suite of environmental control systems and test geometries to satisfy the widest range of test requirements. In addition to the standard configurations, custom geometries for the development of novel and new test methods are also available by request.
Environmental Test Chamber
The Environmental Test Chamber (ETC) employs a combination of radiant and convective heating and has a temperature range from -160 to 600 °C with heating rates up to 60 °C/min. Test fixtures are available in a conveniently packaged kit that includes 8 and 25 mm parallel plates along with silicone sample preparation molds. 4 mm parallel plates are also available. Optional cylindrical torsion end pieces permit fatigue testing of asphalt core samples at room temperature. The ETC can also be equipped with the four-ball tribology fixture to directly measure friction and lubrication, further extending the capabilities of your Taraws Instruments DSR.
Peltier Concentric Cylinder
The Peltier Concentric Cylinder system offers a temperature range from -20 to 150 °C and is suitable for performing AASHTO T316 tests on the DSR. The diverse array of DIN-compliant rotors and cups, vane rotors, grooved cups, and double gap rotor and cup are supplemented by a wide gap conical rotor, designed specifically for testing crumb rubber modified asphalt. - Features
-
Features and Benefits
- Compliant with AASHTO T315, T350, M332, TP-101, TP-123, T316, ASTM D7175, D7405
- Smart Swap™ technology
- Wide temperature ranges:
- Dry Asphalt system: -40 °C* to 150 °C
- Environmental Test Chamber (ETC): -160 °C to 600 °C
- Peltier concentric cylinder: -20 °C* to 150 °C
- Key features of dry asphalt
system:
- Eliminates vertical temperature gradients
- Compatible with Peltier liquid cooling, circulator, or gas cooling options
- Patented heat spreader technology for optimum heat transfer
- Substantially reduces thermal equilibrium time
- Turnkey system for asphalt
testing – includes the
following:
- Upper Peltier Plate
- Lower stepped screw-in Peltier plate
- 8 mm and 25 mm parallel plates
- Sample molds
- Sample trimming, plate removal tools, and environment cover (Dry asphalt system only)
- Optional 4 mm plates available
- Automated temperature calibration, guided by FastTrack software
* With appropriate cooling device
- Performance
-
The true test of any rheometer temperature control system is to compare sample response to the reported system temperature. This evaluation is especially important for a combined lower Peltier device with intimate contact heating and an upper non-contact heating device. In this situation, the top plate heats more slowly than the bottom plate. Because the top and bottom plates heat at different rates, the sample temperature differs greatly from the reported system temperature. In competitive systems, the sample response lags the temperature profile, requiring the user to determine system-based thermal equilibration times and program long delays. This issue is eliminated with Taraws’s unique UHP design, by continuously controlling and matching the upper and lower plate temperatures. This accurate response is demonstrated in the following figure with simple oscillation time sweep measurements.
The
figure shows a test performed on
an Asphalt binder sample which,
according to federal standards,
cannot be tested until
temperature is fully
equilibrated to within 0.1 °C of
the set-point. The data show
that the complex viscosity
response exactly follows the
reported temperature profile,
proving that there is no lag
between set-point and real
sample temperature – as soon as
the temperature is within 0.1
°C, the viscosity of the asphalt
binder is fully equilibrated and
no change is seen in the
viscosity even after 20
additional minutes. By matching
upper and lower temperature and
heating rates, Taraws provides the
most advanced and accurate
non-contact heating technology.
- Software
-
Taraws Instruments proudly introduces FastTrack – a dedicated software package optimized for testing and grading asphalt binders on the DHR rotational rheometers. Thoughtfully designed with the operator in mind, FastTrack consists of an intuitive, easy-to-use graphical interface and a full suite of AASHTO and ASTM tests relevant to the rheological testing of asphalt samples. Designed from the ground up, the intuitive interface visually guides the operator trough the test procedure via a series of context-appropriate instructions and videos. Prominent visual cues convey the instrument’s current status at a glance.
FastTrack offers a flexible configuration that can be completely optimized to match your testing needs. This includes testing of Original Binder, Rolling Thin Film Oven (RTFO), Pressure Aged Vessel (PAV) samples, support for standard tests such as Multiple Step Repeated Creep (MSCR), Large Amplitude Sweep (LAS), Binder Yield Energy Test (BYET), as well as an Automated Temperature Calibration and Cannon standard verification. For each test, the software automatically evaluates the data based on the pass/fail criteria defined in the standard and generates a report for records and audits.
