高模量沥青混合料抗剪性能试验研究

Experimental Study on Shearing Property of High Modulus Asphalt Mixture

针对沥青混凝土路面的车辙问题,通过马歇尔试验、车辙试验和三轴重复荷载蠕变试验,对比研究了SAC20级配的采用硬质沥青A-30、普通重交沥青A-70及SBS改性沥青3种不同沥青的沥青混合料高温稳定性,分析了沥青类型对沥青混合料抗车辙能力的影响.试验结果表明,采用硬质沥青A-30的沥青混合料具有良好的抗车辙能力.

Arming at rutting of the asphalt concrete pavement,the asphalt mixture of hard-grade asphalt（A-30）,heavy duty road asphalt（A-70）and SBS modified asphalt of SAC20 are comparatively studied on the high temperature stability by Marshall test,rutting test and triaxial repeated load creep test.The influence of asphalt type on rutting resistance of asphalt mixture is analyzed.The test results show that the asphalt mixture with hard-grade asphalt A-30 has good rutting resistance.