Resistance to wear by abrasion from studded tyres - Nordic test

6 Resistance to wear by abrasion from studded tyres - Nordic test 

The test to determine resistance to wear of aggregate by abrasion from studded tyres test was developed in Finland, Norway and Sweden. In these countries, studded tyres are permitted and used during the winter period. 

The test is conducted normally on 11.2/16 mm or, alternatively, on 8/12 mm size aggregates, using an apparatus similar to the micro-Deval test. The only difference is three ribs are mounted on the interior of the drum to give extra abrasion. The test is performed in the presence of water. 

More information about the test procedure is given in CEN EN 1097-9 (2008). 

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Part 9 Determination of the resistance to wear by abrasion from studded tyres Nordic test Part 10 Water suction height... 

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