市政道路就地热再生施工前后性能评价研究  

Study on Performance Evaluation of Municipal Roads Before and After Hot In-place Regeneration Construction

作　　者：林鹏 LIN Peng

机构地区：[1]中交第四公路工程局有限公司,北京市100000

出　　处：《城市道桥与防洪》2023年第3期175-178,M0017,共5页Urban Roads Bridges & Flood Control

摘　　要：为了对比分析就地热再生技术对道路的路用性能及功能性的影响,对就地热再生前后沥青胶结料和沥青混合料进行性能测试,对原路面和再生路面进行功能性评价。结果表明,就地热再生的加热过程不会使沥青胶结料明显老化,不会影响级配。由于再生剂的加入,沥青胶结料车辙因子下降,劲度模量下降,沥青变软,沥青混合料的低温性能和水稳定性明显提高;就地热再生后路面抗滑性能及平整度均明显优于再生前路面。In order to compare and analyze the impact of the hot in-place regeneration technology on the pavement performance and functionality of road,the performances of asphalt cement and asphalt mixture before and after the hot in-place regeneration are tested,and the functionalities of the original pavement and regenerated pavement are evaluated.The results show that the heating process of hot in-place regeneration will not significantly age the asphalt cement and not affect the gradation.Due to the addition of regenerant,the rutting factor and stiffness modulus of asphalt cement decrease,the asphalt becomes soft,and the low-temperature performance and water stability of asphalt mixture are significantly improved.The skid resistance and flatness of the pavement after the hot in-place regeneration are significantly better than those before regeneration.

关 键 词：就地热再生 动态剪切流变试验 低温弯曲梁试验 路用性能 功能性评价 

分 类 号：U416.26[交通运输工程—道路与铁道工程]