Nondestructive Testing to Identify Delaminations between HMA Layers (SHRP 2 Prepublication Report*)
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Greetings!
Several types of surface distress in pavements can be attributed to delamination in hot-mix asphalt (HMA) layers, including longitudinal cracking in the wheel path and tearing in the surface. To find a method for detecting the location and severity of delamination before the pavement deficiency causes visual distress, SHRP 2 Project R06D (Nondestructive Testing to Identify Delaminations between HMA Layers) evaluated several nondestructive testing (NDT) technologies, including ground penetrating radar, infrared thermography, mechanical waves, and deflectometers. The final report documents these activities, and it provides technical briefs and details about the NDT technologies.
* 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.
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