EFFECT OF SHAPE CHANGE OF FINE AGGREGATE BY GRINDING TREATMENT ON MECHANICAL PROPERTIES OF ASPHALT MASTIC

Abstract

 To investigate the impact of particle shape changes in fine aggregate due to grinding treatment using a classifier on the mechanical properties of Asphalt mastic, uniaxial compression, wheel tracking, and bending tests were performed on Asphalt mastic incorporating three different gradations of fine aggregate (manufactured sand), with and without grinding treatment. The results showed no significant differences in the optimum asphalt content or standard density between the treated and untreated aggregates. Additionally, the values for uniaxial compressive strength q_u, dynamic stability DS flexural strength σ, and strain ε remained largely unaffected by the grinding treatment, indicating minimal influence on the mechanical properties.