Using Both Infrared and High-Speed Ground Penetrating Radar for Uniformity Measurements on New HMA Layers (SHRP 2 Prepublication Report*)
|
|
Greetings!
The most common form of hot-mix asphalt (HMA) segregation, truck-end, occurs when HMA at the ends of the truckload is colder and sometimes coarser in gradation than normal. To detect truckload segregation, SHRP 2 Project R06C (Using Both Infrared and High-Speed Ground Penetrating Radar for Uniformity Measurements on New HMA Layers) summarized the availability of infrared and radar systems suitable for testing essentially the entire surface area during new HMA construction, and then it demonstrated an infrared sensor bar system and two ground-penetrating radar (GPR) systems on construction projects in each of the four American Association of State Highway and Transportation Officials (AASHTO) regions. The final report documents these activities and includes recommendations for equipment and testing protocols when using infrared and GPR systems.
* To make research available as early as possible, SHRP 2 is temporarily posting final reports that have been submitted by the research team, reviewed according to the relevant National Academy of Sciences procedures, and accepted for publication. These prepublication drafts, which have not been edited or formatted for publication, will be replaced by the final versions as they complete the editorial process.
|
