玄武岩纤维表面改性处理对沥青胶浆性能的影响  

Influence of Surface Treatment for Basalt Fiber on Performance of Asphalt Mortar

作　　者：杨永明 赵品学 张钘 韩锐[3] 司伟[2,4] YANG Yong-ming;ZHAO Pin-xue;ZHANG Xing;HAN Rui;SI Wei(Gansu Provincial Highway Aviation Tourism Investment Group Co.,Ltd.,Lanzhou Gansu 730030,China;Key Laboratory of Special Area Highway Engineering of Ministry of Education,Chang'an University,Xi'an Shaanxi 710064,China;School of Materials Science and Engineering,Xihua University,Chengdu Sichuan 610039,China;Tibet Tianlu Co.,Ltd.,Lhasa Tibet 850000,China)

机构地区：[1]甘肃省公路航空旅游投资集团有限公司,甘肃兰州730030 [2]长安大学特殊地区公路工程教育部重点实验室,陕西西安710064 [3]西华大学材料科学与工程学院,四川成都610039 [4]西藏天路股份有限公司,西藏拉萨850000

出　　处：《公路交通科技》2023年第4期9-15,25,共8页Journal of Highway and Transportation Research and Development

基　　金：国家自然科学基金项目(52278430);西藏天路创新发展基金项目(XZ 2019TL-G-05);西藏自治区自然科学基金重点项目(XZ202101ZR0046G)。

摘　　要：为了研究不同纤维表面改性处理方法对玄武岩纤维沥青胶浆性能的影响,选择经辐照处理、硅烷偶联剂KH550表面改性处理以及辐照+硅烷偶联剂复合改性处理后的玄武岩纤维,制备了玄武岩纤维沥青胶浆。通过析漏试验,锥入度、软化点、低温延度等常规物理性能试验,以及DSR和BBR高低温流变试验,分析了不同改性处理方法对玄武岩纤维沥青胶浆性能的影响。结果表明:经过处理后的玄武岩纤维表面更加粗糙,表面活性增强,纤维表面更易形成结构沥青从而起到增强材料结构稳定性的作用,其中经过辐照和硅烷偶联剂KH550复合处理后的玄武岩纤维与沥青的结合效果最好,吸持沥青的能力最强;不同处理方式对玄武岩纤维沥青胶浆基本物理性能的影响程度不同,表面处理方式对玄武岩纤维沥青胶浆的延度影响不显著,而对高温性能的改善较为显著;表面处理后的纤维可提升原玄武岩纤维沥青胶浆高温稳定性,单一处理方式对高温性能的提升要优于复合处理方式;在低温性能方面,相比延度试验,BBR试验能够有效表征玄武岩纤维沥青胶浆的低温抗裂性能,处理后的玄武岩纤维能够在一定程度上改善沥青胶浆低温抗裂性能。综合考虑高低温性能,经过辐照和硅烷偶联剂KH550复合处理后的玄武岩纤维更适合应用于道路工程中。To investigate the influence of different fiber surface modification methods on the properties of basalt fiber asphalt mortar,by selecting the basalt fiber after irradiation treatment,silane coupling agent KH550 surface modification and irradiation+silane coupling agent modification,the basalt fiber asphalt mortar is prepared.The influences of different modification methods on the performance of basalt fiber asphalt mortar are analyzed by leakage test,conventional physical property tests such as tests of penetration,softening point,low-temperature ductility,as well as DSR and BBR high-temperature and low-temperature rheological test.The result shows that(1)The surface of the treated basalt fiber is rougher,the surface activity is enhanced,and the fiber surface is more prone to form a structural asphalt,thus enhancing the stability of the material structure.Among them,the basalt fiber treated by irradiation and silane coupling agent KH550 has the best combination effect with asphalt and the strongest ability of absorbing asphalt;(2)Different treatment methods have different effects on the basic physical properties of basalt fiber asphalt mortar.The influence of surface treatment mode on the ductility of basalt fiber asphalt mortar is not significant,but it improves the high-temperature performance significantly.(3)The surface-treated fiber could improve the high-temperature stability of the original basalt fiber asphalt mortar,and the improvement of high-temperature performance by single treatment is better than that by composite treatment.(4)In terms of low-temperature performance,compared with the ductility test result,the BBR test could effectively characterize the low-temperature crack resistance of basalt fiber asphalt mortar,the treated basalt fiber could improve the low-temperature crack resistance of asphalt mortar to a certain extent.Considering the high and low temperature properties,the basalt fiber treated by irradiation and silane coupling agent KH550 is more suitable for application in road engineeri

关 键 词：道路工程 玄武岩纤维 试验 沥青胶浆 改性处理 流变性能 

分 类 号：U414[交通运输工程—道路与铁道工程]