高模量沥青路面结构整体性能试验研究  

Experimental Study on the Properties of Overall High Modulus Asphalt Pavement Structure

作　　者：朱富万 郑炳锋 吴威伟 ZHU Fuwan;ZHENG Bingfeng;WU Weiwei

机构地区：[1]苏交科集团股份有限公司,江苏南京211100

出　　处：《上海公路》2021年第3期32-35,M0004,共5页Shanghai Highways

摘　　要：通过实际路面结构取芯,采用动态模量与动态蠕变试验,针对高模量沥青路面结构整体性能开展研究,分析其黏弹特性与高温稳定性能。研究结果表明:高模量路面结构在低频区域模量显著高于三层AC结构,且高频区域模量基本与三层AC结构处于同一水平。此外,高模量路面结构流变次数指数显著低于三层AC路面结构,降低超过100%,表现出了更为优异的高温稳定性能。综合来看,高模量路面结构相对于传统路面结构,具有更优的抵抗高温变形性能。并且,从极限状态下的破坏形式看出,也有利于运营期路面的养护维修与结构的长期保存工作。In this paper,by means of on-site coring,dynamic modulus and dynamic creep test were used to study the overall performance of high modulus asphalt pavement structure,and its viscoelastic characteristics and high-temperature stability performance were analyzed.The results showed that the modulus of high modulus pavement structure in low-frequency area was significantly higher than that of three-layer AC structure,showing more excellent high-temperature performance,and the modulus in high-frequency area was basically the same as that of the three-layer AC structure was at the same level,indicating that the low temperature performance was basically the same as the three-layer AC structure.In addition,the rheologic index of high modulus pavement structure was significantly lower than that of three-layer AC pavement structure,with a reduction of more than 100%,showing better high-temperature stability.Generally speaking,high modulus pavement structure had more excellent resistance to high temperature deformation than the traditional pavement structure,and from the failure form under the limit state,it was also conducive to the maintenance of the pavement during the operation period and the long-term preservation of the structure.

关 键 词：高模量路面 动态模量 动态蠕变 结构性能 

分 类 号：U416.217[交通运输工程—道路与铁道工程]