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Accession Number PB2013-102328
Title Developing a Testing Device for Total Pavements Acceptance: Third-Year Report.
Publication Date Aug 2012
Media Count 175p
Personal Author B. H. Nam J. S. Lee K. H. Stokoe M. Lewis R. Hayes T. Scullion W. Liu
Abstract During the third year of Project 0-6005, significant progress was made towards building the Total Pavement Acceptance Device (TPAD). The TPAD will be a multi-function pavement evaluating device that will be used to profile continuously along pavements at speeds in the range of 3 to 7 mph. The test functions will include those associated with Rolling Dynamics Deflectometer (RDD), ground penetrating radar (GPR), Distance Measurement Instrument (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 TPAD mobile platform and dedicated hauling equipment, a tractor and trailer system, were delivered to CTR in late fall 2010. Acceptance testing for the TPAD mobile platform was initiated in winter 2010 and continued through summer 2011. Acceptance testing involved evaluating (1) the speed control, (2) the static load control, (3) the dynamic load control, (4) the portable load calibration system, and (5) the DMI. Some improvements were identified that were completed by the manufacturer. Progress was also made in developing (1) improved rolling sensors and associated data analysis methods commensurate with the target testing speeds and (2) a second-generation integrated data acquisition and display system that records all test functions on the same time and distance baselines.
Keywords Calibration
Data acquisition
Dynamic loads
Global positioning systems
Ground penetrating radar
Rolling dynamics deflectometer
Speed control
Temperature measurements
Total Pavement Acceptance Device (TPAD)
Video imaging

Source Agency Federal Highway Administration
Texas Transportation Institute Texas A&M University
NTIS Subject Category 50A - Highway Engineering
50C - Construction Equipment, Materials, & Supplies
Corporate Author Texas Univ. at Austin. Center for Transportation Research.
Document Type Technical report
Title Note Technical rept.
NTIS Issue Number 1303
Contract Number N/A

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