Hardness of Coarse Aggregates used in Asphalt Wearing Courses â€“ A Whitepaper

1 Hardness of Coarse Aggregates used in Asphalt Wearing Courses – A Whitepaper By Statewide Materials Alaska DOT&PF December 2011 rev November 2012 Table of Contents 1- Introduction ................................................................................................................................. 2 2- Background ................................................................................................................................. 2 3- Scandinavian Evidence of Aggregate Hardness Benefits ........................................................... 3 4- Hard Aggregate Benefits - Alaskan Findings ............................................................................. 4 4‐1 Wear‐Resistant Aggregate Study .......................................................................................... 4 4‐2 Cost‐effectiveness of Rut Repair Methods............................................................................ 5 4‐3 Cost‐effectiveness of Importing Hard Aggregates ................................................................ 6 4‐4 Pavement Wear in the Southeast Region ............................................................................. 6 4‐5 Tudor Road Rehab: Local versus Hard Aggregates................................................................ 7 5- Conclusions and Recommendations ........................................................................................... 8 6- References ................................................................................................................................... 9

Hardness of Coarse Aggregates used in Asphalt Wearing Courses â€“ A Whitepaper

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