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The Cooper Wessex Aggregate Abrasion machine CRT-AAM determines the Aggregate Abrasion Value (AAV) by measuring the resistance of aggregate to surface wear by abrasion.

  • Inadequate abrasion resistance of road surfacing aggregates means an early loss of the texture depth required to maintain high speed skidding resistance
  • Determines the Aggregate Abrasion Value by testing the measure of the resistance of aggregate to surface wear by abrasion
  • Two specimens are pressed against the surface of a steel disc rotating in a horizontal plane, with a force of 0.365 Newton
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