dense chip
1.Ln recent 10years,the expresway Constrution im wr Country is deueloping Vigorousty,up to now,the Conpleted expressway is up to 2500km,95%of Expressway pavemtnt adopted asphalt pwemenf of half-rigid bese. The material in helf-rigid bese are cement graded aggreyate and dense Lime coalah graded agyregafe,and Cemenf Sfone chip and suspension Lime coal ash aggregate.
