Noice Reducing Exposed Aggregate Surfaces – Experience and Recommendations

Paper by STINGLHAMMER KRENN from ISCR 7th 1994 Vienna Austria

In 1990 a technique for building pavements with a noice reducing concrete surface was developed in Austria. The top layer contains aggretate with 8 mm maximum size. The surface is sprayed with a retarder and brushed the next day to expose the aggregate. This technique has been used on 120 km of carriageway. Tyre-road noice is as low as with other noice reducing surfaces, skid resistance is better than with the conventional technique and there are no problems with winter maintenance.

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