Analysis of Influence of Fine Aggregate on Void Ratio of Asphalt Mixture

Using molding with different fine aggregate, gradation, asphalt, aggregate forming and forming method, and calculate the sample porosity. The test results show that: The basalt coarse-fine aggregate molding, specimen void ratio was larger, are beyond the regulatory requirements; basalt coarse aggregate molding and limestone fine aggregate molding, specimen porosity is small, can meet the requirements of specification range. The main reason is that the basalt thin bulk density is big, and its not easy compaction.