紫外老化对抗燃油沥青混凝土无损黏弹性能的影响  

Effect of Ultraviolet Aging on Non-destructive Viscoelastic Properties of Anti-fuel Asphalt Concrete

作　　者：陈忠华 桑帆 于晓贺 罗蓉 CHEN Zhonghua;SANG Fan;YU Xiaohe;LUO Rong(Central South Survey and Design Institute Group Co.Ltd.,Wuhan 430073,China;School of Transportation and Logistics Engineering,Wuhan University of Technology,Wuhan 430063,China;Hubei Provincial Highway Engineering Technology Research Center,Wuhan 430063,China)

机构地区：[1]武汉理工大学交通与物流工程学院,武汉430063 [2]湖北省公路工程技术研究中心,武汉430063 [3]中南勘察设计院集团有限公司,武汉430073

出　　处：《武汉理工大学学报（交通科学与工程版）》2023年第5期897-901,共5页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：湖北省交通运输厅科技项目(2020-2-1-2);湖北省科技厅重点研发计划项目(2020BCA085)

摘　　要：文中基于埃塞俄比亚亚的斯亚贝巴BOLE机场改扩建项目中机场沥青道面铺装项目,对抗燃油沥青混凝土进行了配合比设计并确定了抗燃油剂的最佳掺量,基于动态模量试验研究了紫外老化对抗燃油沥青混凝土无损黏弹性能的影响.结果表明:①PR AK抗燃油改性剂的最佳掺量为0.6%;②随着缩减频率的增加,抗燃油沥青混凝土动态模量不断增大,动态模量主曲线呈“S”型曲线,相位角先增大后减小,相位角主曲线呈抛物线形状;③紫外老化前后混合料的无损黏弹性能变化并不明显,即紫外老化对抗燃油沥青混凝土无损黏弹性能的影响并不显著.Based on the paving project of airport asphalt pavement in the reconstruction and expansion project of BOLE Airport in Addis Ababa,Ethiopia,the mixture ratio of fuel-resistant asphalt concrete was designed and the optimum content of fuel-resistant agent was determined.Based on the dynamic modulus test,the influence of ultraviolet aging on the lossless viscoelastic properties of anti-fuel asphalt concrete was studied.The results show that:①the optimum content of PRAK fuel-resistant modifier is 0.6%.②With the increase of shrinkage frequency,the dynamic modulus of fuel-resistant asphalt concrete increases continuously.The main curve of dynamic modulus is"S"curve,and the phase angle first increases and then decreases,and the main curve of phase angle is parabolic.③The change of the lossless viscoelastic properties of the mixture before and after ultraviolet aging is not obvious,and the influence of ultraviolet aging on the lossless viscoelastic properties of anti-fuel asphalt concrete is not obvious.

关 键 词：抗燃油沥青混凝土 无损黏弹性能 动态模量 相位角 紫外老化 

分 类 号：U414[交通运输工程—道路与铁道工程]