Resistance to fragmentation by the Los Angeles test

Resistance to fragmentation by the Los Angeles test Resistance to impact test 

With regard to the resistance to polishing/abrasion of the aggregates, the tests are as follows  

In countries where studded tyres are used or permitted in the winter, the resistance to wear by abrasion from studded tyres test also needs to be conducted. 

The standard size of aggregate tested in accordance with CEN EN 1097-2 (2010) is 10/14 mm size aggregate. 

The mass of the test sample used is 5000 5 g and is obtained from a sampled mass of at least 15 kg of aggregate. It is required that 60% to 70% of the test sample mass should pass through the 12.5 mm sieve. If an 11.2 mm sieve is used, the percentage changes to 30% to 40%. 

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