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DIRECT TENSION TESTER

CATNOBTE-DTT
  PHOTO OF DIRECT TENSION TESTER ACCESSORIES NOT SHOWN HERE
DESC

The BTE-DTT Direct Tension System for asphalt is a complete instrument for evaluating stiffness and failure properties of asphalt binders at low "in-service" temperatures. (Use The BTE-DTT DT for AASHTO T 314). BTE-DTT DT results, in conjunction with Bending Beam Rheometer (BBR) data, provide a more complete characterization of the asphalt binder. In addition, BTE-DTT DT data predict the temperature at which thermal cracking would occur in the roadway. The BTE-DTT DT features both the simplicity required of a routine specification tester for QA/QC and the versatility of a full research instrument, all in one. In fact, it is just as easy to determine the Pass/Fail analysis for asphalt Performance Grading as it is to perform comparisons of binder/additive and binder/modifier interactions over a wide range of strain rates. The BTE-DTT Superpave Direct Tension Tester has been evaluated by the Federal Highways Administration and meets the following specifications all AASHTO, SHRP and FHWA specifications. It is designed to perform asphalt binder tests in accordance with the AASTHO T 314 and ASTM D 6723 test protocols. This is a computer-controlled machine that features:

  • * Closed Loop Control and Data Acquisition
  • * Fully integrated Software Package
  • * Real Time Data Acquisition
  • * Manual or Automatic Test Capability
  • * Exlar actuator for Higher Accuracy and Dynamic Performance
  • * Temperature-Controlled Fluid Bath
  •  * Choice of Chiller Options

To provide the most accurate and repeatable results possible, the following key features have been incorporated into the overall system design. The BTE-DTT Direct Tension System employs a stiff load frame and measuring head that provides very little friction and errors associated with system compliance. The measuring head is driven by a high performance Exlar actuator providing maximum dynamic response and sensitivity without the backlash or wind-up of gearmotor driven systems. All key sensor and load cell components are isolated from the fluid bath, ensuring a safe and stable environment. The linear sensor is mounted across the specimen to provide the most accurate strain rate and position information. The BTE-DTT system is capable of forces in excess of 500N and speeds from 0.372 mm/min to 312 mm/min. Serviceability and reliability were key considerations in the robust design and final

STANDARDASTM D6723,AASHTO T314,SHRP
QUANTITY0
DTIME90 DAYS
VIDEO
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MANUAL
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