Abstract:Warm mix technology was used in the construction operations of OGFC(open graded friction course) mixture. The basic performance including porosity, Cantabro spatter loss, Marshall stability and flow value of warm and hot mix OGFC mixtures was tested. The results show that the mixing temperature of warm mix OGFC mixture may be reduced by about 25 ℃ compared with that of hot mix OGFC mixture. The performance of warm mix OGFC mixture is no worse than that of hot mix OGFC mixture without warm mix modifier added. Adding warm mix modifier in OGFC mixture allows a wider range of paving temperature, which can effectively improve the quality of its construction.