Abstract
Porous low noise wearing courses are popular in Switzerland. However, after 4 to 5 years in service distresses appear mostly due to raveling. Measuring the susceptibility to loss of aggregates is therefore considered a desirable step of quality control. The research project was able to demonstrate the problematic nature of the scuffing test according to EN 12697–50. Instead, it has been shown that a simple pull-off test has many advantages. The handheld device is easy to operate and applicable on site. The method discriminates between types of mix-designs, degrees of compaction and is performing satisfactory with respect to accuracy. It was found that pull-off results correlated reasonably well with visual raveling field inspection.
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