基于动态模量的温拌再生沥青混合料性能研究

利用Superpave简单性能试验机（SPT）测定温拌再生沥青混合料在不同围压、温度、荷载作用下的动态模量.分析围压、温度、加载频率对再生沥青混合料动态模量的影响,对比温拌与热拌再生沥青混合料的黏弹性.结果表明,温拌再生混合料的动态模量受温度和加载频率的影响显著,其变化规律与热拌混合料相同；与热再生沥青混合料相比,温拌再生沥青混合料的抗车辙性能更好.

Study on Properties of Warm Mix Recycled Asphalt Mixture Based on Dynamic Modulus

In this paper, dynamic modulus of warm mix recycled asphalt mixture is tested in different confining pressure, temperature and loading frequency using Superpave simple performance testing machine（SPT）. The effects of these parame- ters on dynamic modulus of warm mix recycled are analyzed and the viscoelasticity of recycled asphalt mixture produced by warm mix and hot mix method are also compared. The results show that temperature and loading frequency both have signifi- cant effects on dynamic modulus of warm/hot mix recycled asphalt mixture, while the anti-rutting property of warm mix recy- cled asphalt mixture is better.