AC-13布敦岩改性沥青混合料的路用性能

 为探讨布敦岩改性沥青的路用性能，以辽河A-90 号沥青作为基质沥青，布敦岩沥青作为外掺剂制备改性沥青混合料，通过车辙、浸水马歇尔、冻融劈裂、低温小梁弯曲等实验，研究沥青混合料的高低温性能和浸水性能，进而分析布敦岩沥青掺量对沥青混合料路用性能的影响。结果表明，布敦岩沥青可以有效地改善沥青的感温性能和抗老化性能，随着布敦岩沥青掺量的增加，混合料的高温稳定性能和水稳定性大大提高，但当布敦岩沥青掺量从20%增加到30%时，低温性能略有降低，因此布敦岩沥青掺量不宜超过30%。

Research on Pavement Performance of AC-13 Buton Rock Asphalt Mixtures

Using the Liaohe-90# as the base asphalt, a modified asphalt mixture is prepared by the Buton rock asphalt. The pavement performance which includes high temperature stability, low temperature anti-cracking and water stability are studied through the rutting test, dynamic creep test, immersion Marshall test, freeze-thaw splitting test, small beam bending test and so on. The results show that with the increase of the admixture of Buton rock asphalt, the temperature sensing property and aging property of the asphalt can be improved effectively, and the high temperature stability and water stability modified mixture are enhanced. However, when the mixing amount of Buton rock asphalt increases from 20% to 30%, the low temperature performance is declined slightly. Therefore, the mixing amount of Buton rock should not be more than 30% in order to reduce cost and to use it in the northern area.