The Mohs hardness and Vickers hardness of nine different aggregates were tested by hard-ness test,and the relationship between hardness and wear value was obtained by regression.Based on the grey theory,the main minerals and chemical components that affect the wear resistance of aggre-gate are determined.The results show that granite has the highest hardness and limestone has the lowest hardness among the nine selected aggregates.The wear value of aggregate is inversely propor-tional to hardness,and the wear resistance of aggregate is better when the weighted Mohs hardness is greater than 5 or Vickers hardness is greater than 300.Feldspar and Al2O3+SiO2 are the main mineral components and chemical components that determine the wear resistance of aggregate.
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