Reasonable Mixture of Subbase Material of Arongqi-Shenzhen Highway

A Rongqi-Shenzhen expressway is one of national highways in China. Anyang section pavement subbase was designed by cement stabilized crushed stones with lower cement. By using gradation design programmer,we analyzed the screening experiments of all kinds of materials,and confirmed the best gradation. According to the gradation experiment,the optimal cement dosage is educed. Finally,the technical-economic analysis indicates this project has well economic and road-use functions.