天然胶乳改性环氧沥青EOGFC混合料柔韧性及性能研究  

Research on Flexibility and Performance of Natural Rubber Latex Modified Epoxy Asphalt EOGFC Mixture

作　　者：封志佼 赵映琴 封基良 秦国彪 FENG Zhijiao;ZHAO Yingqin;FENG Jiliang;QIN Guobiao(Yunnan Jiaofa Consulting Co.Ltd.,Kunming 650100,China;School of Architecture and Planning,Yunnan University,Kunming 650500,China;Yunnan Changtan Technology Co.Ltd.,Kunming 650000,China)

机构地区：[1]云南交发咨询有限公司,昆明650100 [2]云南大学建筑与规划学院,昆明650500 [3]云南畅坦科技有限公司,昆明650000

出　　处：《武汉理工大学学报(交通科学与工程版)》2025年第1期113-116,122,共5页Journal of Wuhan University of Technology(Transportation Science & Engineering)

基　　金：云南省交通运输厅科技项目(云交科教便[2020]113号);云南大学第一届专业学位研究生实践创新项目[2021]Y065号。

摘　　要：本文通过在环氧沥青B组分中加入天然胶乳(NRL)作为改性剂,经环氧B组分10℃延度、-10℃小梁低温弯曲试验及马歇尔试验综合评价了柔韧性改善效果,确定了NRL的最佳掺量,并评价了最佳掺量下EOGFC混合料的路用性能与长期使用性能.结果表明:NRL可显著提升环氧沥青B组分10℃延度并改善环氧沥青EOGFC混合料的柔韧性;NRL的最佳掺量为5.0%;最佳掺量下EOGFC混合料水稳定性、低温抗裂性及高温稳定性等指标均满足施工规范要求;经加速加载40万次后混合料试件表面较为完整,且最大车辙深度仅为0.22 mm;NRL改性环氧沥青EOGFC混合料在柔韧性得到显著提升的同时仍具备优良的路用性能及长期使用性能,可有效降低混合料铺筑后开裂的风险.By adding natural latex(NRL)to epoxy asphalt component B as modifier,the flexibility improvement effect was comprehensively evaluated by the ductility of epoxy asphalt component B at 10℃,the low-temperature bending test of-10℃and Marshall test,and the optimal content of NRL was determined.The road performance and long-term service performance of EOGFC mixture with the optimal content were evaluated.The results show that NRL can significantly improve the ductility of epoxy asphalt component B at 10℃and improve the flexibility of epoxy asphalt EOGFC mixture.The optimum content of NRL is 5.0%,and the water stability,low-temperature crack resistance and high-temperature stability of EOGFC mixture under the optimum content all meet the requirements of construction specifications.After 400000 times of accelerated loading,the surface of the mixture specimen is relatively complete,and the maximum rutting depth is only 0.22 mm.NRL modified epoxy asphalt EOGFC mixture has excellent road performance and long-term service performance,which can effectively reduce the risk of cracking after paving.

关 键 词：天然胶乳 EOGFC 柔韧性 路用性能 长期性能 

分 类 号：U414[交通运输工程—道路与铁道工程]