合成材料老化与应用2024，Vol.53Issue(1)：73-77,5.
温拌剂对含RAP沥青混合料力学性能的影响
The Effect of Warm Mix Agent on the Mechanical Properties of Asphalt Mixtures Containing RAP
摘要
Abstract
In order to evaluate the mechanical properties of warm mix asphalt mixtures containing RAP(Recycled Asphalt Pavements)under high and low temperature conditions,and to optimize the warm mix agents suitable for mixtures containing RAP,Sasobit,Aspha-min,RH,and Evotherm were initially selected as the four warm mix agents.Stiffness modulus,loading times,and different crack resistance indicators were obtained by stiffness modulus test,dynamic creep test,and semi-circular bending test respectively,to evaluate the permanent deformation resistance,high-temperature mechanical performance,and low-temperature crack resistance of the mixture.The results show that RAP increases the stiffness modulus,loading times,maximum load,fracture energy and strain energy of the mixture,but decreases the flexibility index and crack resistance index.The influence of warm mix agent on the different properties of the mixture is greatly influenced by the type of warm mix agent.In the mixtures mixed with RAP and warm mix agent,Sasobit has the highest stiffness modulus,followed by Evotherm and RH.The mixture with the highest loading times corresponds to RH,followed by Evotherm.The mixture with the best crack resistance corresponds to Evotherm using the homogenization evaluation method.After adding RAP to the mixture,it is advisable to choose warm mix agent Evotherm based on various performance factors,and the mixture has good resistance to permanent deformation and cracking.关键词
道路工程/温拌剂/RAP/沥青混合料/力学性能Key words
road engineering/warm mix agent/RAP/asphalt mixture/mechanical property分类
交通工程引用本文复制引用
王峰,金长海,苏峰,元新勇,殷卫永..温拌剂对含RAP沥青混合料力学性能的影响[J].合成材料老化与应用,2024,53(1):73-77,5.基金项目
河南省交通运输厅科技成果推广项目(2022T3-1). （2022T3-1）
