交通运输研究2023，Vol.9Issue(6)：107-118,12.DOI:10.16503/j.cnki.2095-9931.2023.06.011
环氧树脂掺量对蓄盐沥青混合料性能的影响
Influence of Epoxy Resin Content on Performance of Salt-Storage Asphalt Mixture
摘要
Abstract
To effectively enhance the snow melting and anti-icing performance of asphalt pavement and re-duce the damage caused by ice and snow to asphalt pavement,salt-storage asphalt mixture samples with different epoxy resin contents were prepared,and the constuction operability,the pavement perfor-mance,as well as the snow melting and anti-icing performance of the samples were analyzed and eval-uated.Firstly,the viscosity test and Marshall stability test were used to evaluate the construction opera-bility of epoxy asphalt binder and salt-storage asphalt mixtures with different epoxy resin contents sep-arately,their microstructures were observed by FM(Fluorescence Microscopy)and the reaction mecha-nism was analyzed.Then,the pavement performance of salt-storage asphalt mixture was evaluated based on rutting test,low temperature bending test,residual stability test and freeze-thaw splitting test.Lastly,the snow melting and anti-freezing performance of salt-storage asphalt mixture was analyzed based on salt release test and ice adhesion test.Results show that there is an obvious threshold value for the performance change of salt-storage asphalt mixtures with different epoxy resin contents com-pared with thermoplastic SBS modified asphalt.When the content of epoxy resin is less than 30%,it has little effect on the pavement performance of salt-storage asphalt mixture,but it has obvious effect on the snow melting and anti-icing performance.While,when the epoxy resin content is greater than 30%,the epoxy resin can significantly improve the pavement performance of the salt-storage asphalt mixture,but it will also have a negative impact on the snow melting and anti-icing performance.Ac-cording to the observation and analysis through FM,the reason is that with the increase of epoxy resin content,the epoxy asphalt system has undergone a phase transition from"asphalt as a continuous phase while epoxy curing as a dispersed phase"to"asphalt as a dispersed phase while epoxy curing as a continuous phase",resulting in significant changes in performance.Therefore,when using salt-stor-age asphalt mixture,the pavemet performance and snow melting and anti-icing performance should be considered comprehensively.It is suggested that the epoxy resin content in the epoxy asphalt mixture with snow melting agent is 20%～30%.关键词
蓄盐沥青混合料/环氧沥青/融雪剂/路用性能/融雪抑冰性能Key words
salt-storage asphalt mixture/epoxy asphalt/snow-melting agent/pavement perfor-mance/snow melting and anti-icing performance分类
交通工程引用本文复制引用
成高立,李晓娟,周敦宏..环氧树脂掺量对蓄盐沥青混合料性能的影响[J].交通运输研究,2023,9(6):107-118,12.基金项目
国家自然科学基金项目(61901056) （61901056）
陕西省技术创新引导专项(基金)(2022CGBX-28) （基金）
陕西省重点研发计划项目(2023JBGS-18) （2023JBGS-18）
陕西省交通运输厅项目(16-12K) （16-12K）
