A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Statewide Implementation of the Total Pavement Acceptance Device (TPAD)—Final Report
Construction and development of the Total Pavement Acceptance Device (TPAD) was completed at the end of August 2012 through TxDOT Research Project 0-6005-01. The TPAD is a multi-function pavement evaluation device used to profile continuously along pavements at speeds in the range of 2 to 3 mph. The multi-function features of the TPAD include (1) rolling dynamic deflectometer (RDD), (2) ground-penetrating radar (GPR), (3) distance measurement instrument, (4) high-precision differential global positioning system (GPS), (5) pavement surface temperature measurement, and (6) digital video imaging of the pavement surface and right-of-way conditions. TxDOT implementation Project 5-6005-01 was begun in mid-January 2013 and ended on August 31, 2014. The objective of the project was to implement the statewide use of the TPAD for project-level studies of the structural condition of pavements. During the 20-month period of Project 5-6005-01, the Center for Transportation Research (CTR) at The University of Texas at Austin (UT) and the Texas A&M Transportation Institute (TTI) alternately stored, maintained, and operated the TPAD and TPAD hauler. Personnel at each institute performed TPAD demonstration projects when specific TxDOT districts made requests. Ten TPAD demonstrations and eleven TPAD-level studies in eight districts were performed. The TPAD has been successfully used to evaluate the remaining life of current pavement, to help District engineers select optimum rehabilitation schemes, and to identify problematic areas over a wide range of pavements, such as hot mix asphalt, jointed concrete pavement, continuously reinforced concrete pavement, and composite pavement. In addition, the RDD functionality was improved during the project by replacing the sole air-pressure control system for the rolling sensors with three separate air-pressure control systems (one for each of the sensors), as well as by modifying and improving the towing frame used to position and raise/lower the rolling sensors.
Statewide Implementation of the Total Pavement Acceptance Device (TPAD)—Final Report
Construction and development of the Total Pavement Acceptance Device (TPAD) was completed at the end of August 2012 through TxDOT Research Project 0-6005-01. The TPAD is a multi-function pavement evaluation device used to profile continuously along pavements at speeds in the range of 2 to 3 mph. The multi-function features of the TPAD include (1) rolling dynamic deflectometer (RDD), (2) ground-penetrating radar (GPR), (3) distance measurement instrument, (4) high-precision differential global positioning system (GPS), (5) pavement surface temperature measurement, and (6) digital video imaging of the pavement surface and right-of-way conditions. TxDOT implementation Project 5-6005-01 was begun in mid-January 2013 and ended on August 31, 2014. The objective of the project was to implement the statewide use of the TPAD for project-level studies of the structural condition of pavements. During the 20-month period of Project 5-6005-01, the Center for Transportation Research (CTR) at The University of Texas at Austin (UT) and the Texas A&M Transportation Institute (TTI) alternately stored, maintained, and operated the TPAD and TPAD hauler. Personnel at each institute performed TPAD demonstration projects when specific TxDOT districts made requests. Ten TPAD demonstrations and eleven TPAD-level studies in eight districts were performed. The TPAD has been successfully used to evaluate the remaining life of current pavement, to help District engineers select optimum rehabilitation schemes, and to identify problematic areas over a wide range of pavements, such as hot mix asphalt, jointed concrete pavement, continuously reinforced concrete pavement, and composite pavement. In addition, the RDD functionality was improved during the project by replacing the sole air-pressure control system for the rolling sensors with three separate air-pressure control systems (one for each of the sensors), as well as by modifying and improving the towing frame used to position and raise/lower the rolling sensors.
Statewide Implementation of the Total Pavement Acceptance Device (TPAD)—Final Report
K. H. Stokoe (author) / J. Lee (author) / T. Scullion (author)
2016
410 pages
Report
No indication
English
Transportation , Problem Solving Information for State & Local Governments , Pattern Recognition & Image Processing , Recording Devices , Composite Materials , Construction Equipment, Materials, & Supplies , Civil, Construction, Structural, & Building Engineering , Materials Sciences , Optical Detection , Statewide Implementation , Total Pavement Acceptance Device (TPAD) , Multi-function pavement evaluation , Rolling Dynamic Deflectometer (RDD) , Texas (state) , Construction , Development , Ground-penetrating radar (GPR) , Sensors , Composite pavement , Reinforced concrete pavement , Video imaging , Jointed concrete pavement , Hot mix asphalt (HMA) , Center for Transportation Research (CTR)