Aashto 57 Crushed Stone Union Quarries
Aashto #57 aggregate is a crushed stone grade that is gravel-like and made from a blend of stones five, six and seven. it comes from natural rock, so the pieces are jagged and angular. what is #57 crushed stone? aashto #57 consists of many common kinds of rocks, including quartzite, washed gravel, granite, argillite, limestone and.