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info@wessextestequipment.co.uk 
+44 (0) 1934 824000 
 

WESSEX ACCELERATED ABRASION MACHINE 
 

Inadequate abrasion resistance of road surfacing aggregates means an early loss of the texture depth required to maintain high speed skidding resistance.  
 
The Aggregate Abrasion machine determines the Aggregate Abrasion Value by testing the measure of the resistance of aggregate to surface wear by abrasion. 
 

 
TEST PROCEDURE 
 

Two specimens are pressed against the surface of a steel disc rotating in a horizontal plane, with a force of 0.365 newtons per sq. centimetre. Sand, fed by hoppers, is used as an abrasive. After 500 disc revolutions the amount of material abraded is measured by calculation of the weight loss of the aggregate.  
 
The percentage loss in mass of chippings as known as the ‘Aggregate Abrasion Value’ (AAV), and ranges from about 1 for hard flints to over 16 for aggregates normally considered too soft for use in road surfacings. 
Width 
80cms 
Depth 
70cms 
Height – Frame 
110cms 
Volume Packed 
0.79cu metres 
Weight 
170kg 
Electrical Supply 
230v  
single phase 50Hz 
 
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