TE-BBR Instruction and Operation Manual
Specimen Molds
Each mold set consists of five rectangular metal sections, three plastic strips, and two rubber O-
rings. Since tests are generally performed in duplicate, two complete specimen molds are required
for each test.
Air/Nitrogen Requirements
The air bearing, and the pneumatic load chamber immediately below it, require a source of clean,
dry, nonflammable gas. Compressed air is preferable if it is readily available and is clean and dry.
Other acceptable gasses include nitrogen and carbon dioxide. A small compressor can be used to
provide air at a suitable rate and pressure to satisfy the requirements for operation of this
equipment.
Some users prefer to use cylinders of compressed gas such as nitrogen or carbon dioxide. Consult
the Specifications section for air pressure and volume requirements, which vary depending on the
date of manufacture for your instrument.
Computer Interface
The data acquisition system includes a personal computer, printer, and the BBRw software program
for Windows®. An RS-232C cable is provided to connect the TE-BBR to a computer.
The TE-BBR has its own microprocessor and communicates with the host computer via the RS-232C
serial connection to the computer COM port, or through USB with a connector.
Test data, including deflection of the asphalt beam, load on the beam, and temperature, are
acquired by the instrument. The instrument then transmits the data to the host computer. The TE-
BBR also receives commands from the host computer via the RS-232C connection in order to control
timing of the application of loads and enable the temperature control system. Testing and data
acquisition control parameters are selected via the software interface.
Contact CANNON for specifications of software version and instrument type.
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