老化沥青砂浆动态模量试验研究  

The experimental study of dynamic modulus of aged asphalt mortars

作　　者：陆学元 彭勇[2] 王重阳 章秀芳 魏星 LU Xueyuan;PENG Yong;WANG Chongyang;ZHANG Xiufang;WEI Xing(Anhui Transportation Holding Group Co.,Ltd.,Hefei 230088,China;Institute of Transportation Engineering,Zhejiang University,Hangzhou 310058,China)

机构地区：[1]安徽省交通控股集团有限公司,合肥230088 [2]浙江大学交通工程研究所,杭州310058

出　　处：《低温建筑技术》2024年第11期150-153,158,共5页Low Temperature Architecture Technology

基　　金：安徽省交通控股集团有限公司交通强国试点项目(2021DFABZ02474)。

摘　　要：为研究老化沥青砂浆动态模量特性,文中以3种沥青砂浆、5种老化程度及3个试验温度为例,进行不同类型、不同老化程度沥青砂浆在不同温度下的单轴压缩动态模量试验。试验结果表明,老化程度、加载频率和温度影响沥青砂浆动态模量试验结果。沥青砂浆动态模量随老化程度和加载频率增大而增加,随温度增加而减小。沥青砂浆相位角随温度和加载频率而变化,在相同温度下不同老化程度的沥青砂浆相位角变化趋势相同。研究可为今后沥青路面设计和养护决策制定提供参考。To study the dynamic modulus characteristics of aged asphalt mortar,uniaxial compression dynamic modulus tests were conducted on three types of asphalt mortar with five levels of aging and at three different test temperatures.The test results indicate that aging degree,loading frequency,and temperature significantly affect the dynamic modulus of asphalt mortar.The dynamic modulus increases with the degree of aging and loading frequency,while it decreases with increasing temperature.The phase angle of asphalt mortar varies with temperature and loading frequency,showing a consistent trend across different aging degrees at the same temperature.These findings can provide valuable references for the design and maintenance decision-making of asphalt pavements in the future.

关 键 词：路面工程 老化沥青砂浆 动态模量 主曲线 单轴压缩模量试验 

分 类 号：TU535[建筑科学—建筑技术科学]