Progress during the first year towards building the total pavement acceptance device (TPAD).
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2010-08-01
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Abstract:During the first year of Project 0-6005, significant progress was made towards developing the Total Pavement
Acceptance Device (TPAD). The TPAD will be a multi-function device that will be used to survey continuously
along pavements at speeds in the range of 5 to 10 mph. The test functions will include those associated with
Rolling Dynamics Deflectometer (RDD), ground penetrating radar (GPR), DMI and high-precision differential
GPS, and surface temperature measurements, as well as digital video imaging of the pavement and right-of-way
conditions. The basic moving platform for the TPAD was selected and initial prototype tests were conducted at
the TxDOT Flight Services Facility at ABIA. Progress was made in developing: (1) improved rolling sensors and
associated data analysis methods commensurate with the target testing speeds and (2) an integrated data
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