Honeywell温拌剂在SMA沥青混合料中的添加方法及性能研究

基于SMA 13沥青混合料，对Honeywell温拌剂进行了干法、湿法工艺的路用性能评价，并与SBS改性沥青混合料进行了对比.结果表明，该温拌剂在湿法使用时，可以赋予基质沥青较高的模量和高温粘度，并在30~65 ℃温度区间保持稳定粘弹性结构，降低沥青的温度敏感性.在干法使用时，该温拌剂可以在玄武岩颗粒表面形成裹附膜，有效提高沥青与玄武岩集料的粘附性等级；在采用基质70号沥青相同的生产温度下，干法添加0.3%的温拌剂生产的SMA混合料较好地满足了改性沥青混合料的相关要求，其路用性能与SBS改性沥青混合料相差不大，实现了一定的温拌效果.
Based on SMA 13 asphalt mixture,the pavement performance of a kind of organic warm mixed additive in dry and wet process was evaluated,and compared with that of SBS asphalt mixture. The experimental results show that the warm mixed additive can be used as a modifier to give larger modulus and higher temperature viscosity,keep the stability of visco elasticity structure in 30~65 ℃ranges,and reduce the temperature sensitivity of neat asphalt. In dry method application,after the surface pretreatment of basalt particles,this warm mixed additive can effectively improve the cohesive grade between neat asphalt and aggregate. By using the same production temperature of neat asphalt,the SMA mixture with 03% warm mixed additive production in dry process can meet the requirement of the modified asphalt mixture,get the pavement performance close to that of SBS asphalt mixture,and achieve a warm mixing effect.