国产30号硬质沥青高温性能研究

Study on high-temperature performance of domestic number 30 hard asphalt

为解决沥青路面的高温稳定性问题,硬质沥青逐渐获得重视,通过对国产30号沥青与70号沥青的比较研究,表明30号沥青软化点较高,车辙因子较大,PG高温等级较高;车辙试验证明硬质沥青混合料抗车辙能力强,高温稳定性好,为国产硬质沥青的推广应用提供依据。

In order to improve high temperature performance of asphalt pavement, hard asphalt has been gradually used to solve the asphalt pavement high -temperature rutting problems, in this paper, the high temperature performances of number 30 hard asphalt, number 70 asphalt are compared and analyzed through laboratory tests. Results show that the softening point of hard asphalt is higher, the rutting factor is bigger, high temperature performance grade is higher than number 70 asphalt. Rutting experiment show that hard asphalt has strong anti - rut ability and good high - temperature stability. Provide a basis to promote the uses of hard - grade asphalt.