Research on Material Selection Standard of Graded Crushed Stone Base Course for Municipal Road

For reasonably selecting graded crushed stone materials, material selection standard is proposed for each traffic level of municipal roads according to the local common material properties in Anhui province, and referring to technical index provision and research results about graded crushed stone material at home and abroad. The selection standard of coarse aggregate takes crushing value, abrasion value, needle and plate particle content and robustness as index. The selection standard of fine aggregate takes robustness, sand equivalent, liquid limit and plasticity index as index. The research results promote the popularization and application of graded crushed stone base course on municipal road engineering in Anhui province.