Real-time, high-speed nondestructive testing (NDT) of asphalt pavements during construction can greatly improve quality, durability, and performance, stretching highway dollars and extending service life.
Technologies to Enhance Quality Control on Asphalt Pavements (R06C) offers products aimed at providing real-time testing of potentially 100 percent of the pavement area, providing much more inspection coverage than existing methods in hot- or warm-mix construction. R06C includes two products:
Through an equipment purchase and demonstration program, showcase, and targeted workshops, selected states are receiving hands-on experience using these technologies under varying conditions.
October 17, 2018: "HMA Compaction Assessment Using GPR Rolling Density Meter"
March 8, 2018: "Ground Penetrating Radar Rolling Density Meter"
January 31, 2018: "Paver Mounted Thermal Profiler"
"Asphalt Pavement Compaction Assessment using Ground Penetrating Radar-Arrays" by Kyle Hoegh, Shongtao Dai, and Lev Khazanovich (PDF)
"Enhanced Model for Continuous Dielectric-Based Asphalt Compaction Evaluation" by Kyle Hoegh, Shongtao Dai, Trevor Steiner, and Lev Khazanovich (PDF)
"Evaluating Asphalt Concrete Air Void Variation via GPR Antenna Array Data" by Kyle Hoegh, Lev Khazanovich, Shongtao Dai, and Thomas Yu (Link)
Paver Mounted Thermal Profiler Workshops
GPR Rolling Density Meter (RDM) Peer Exchange
Paver Mounted Thermal Profiler Showcase
TRB Guidance Documents
Veta - Intelligent Construction Tool
Workers pave an airport road at
Anchorage International Airport
using Pave-IR equipment.
The IR scanner and GPS unit mounted high above the paving screed in Fort Belvoir, VA.
Field display unit for real-time monitoring of IR scanner temperature data mounted to a paver in St. Joseph, MO.
University of Minnesota demonstrates taking core samples. The GPR RDM equipment provides specific locations for core samples, reducing the number of cores needed and providing more accurate measuring.
MnDOT demonstrates the safer option of vehicle mounted GPR antennae gathering GPR RDM data that they analyze using VETA software.
Charting real time GPR results in the vehicle helps detect the density, uniformity and paving issues present in asphalt applications to allow just in time construction adjustments which reward the contractor for correct contractor techniques.