Effect of basalt fiber surface silane coupling agent coating on fiber-reinforced asphalt: From macro-mechanical performance to micro-interfacial mechanism

被引:119
作者
Xiang, Yu [1 ]
Xie, Youjun [1 ]
Long, Guangcheng [1 ]
机构
[1] Cent S Univ, Sch Civil Engn, 22 South Shaoshan Rd, Changsha 410075, Hunan, Peoples R China
关键词
Basalt fiber; KH-550; Asphalt; Mechanical; Interface; Adhesion; RUBBER-MODIFIED ASPHALTS; MIXTURE MOISTURE DAMAGE; RHEOLOGICAL PROPERTIES; AGING RESISTANCE; BEHAVIOR; MASTICS; TEMPERATURE; COMPOSITE; PAVEMENTS; BITUMEN;
D O I
10.1016/j.conbuildmat.2018.05.192
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
The main goal of our work was to study mechanism of interfacial adhesion between basalt fiber and asphalt. Solution of silane coupling agent (2.5 wt%, KH-550) was used to modify fiber surface. Modified fibers were then used for fiber-reinforced asphalt fabrication with different fiber concentrations (0.5, 1.0 and 1.5 wt%). Samples were analyzed by DMA, DSR, EDS, ESEM, ACAM and FTIR. Treatment with KH-550 resulted in fibers with rough surface and weak hydrophilicity. It also increased surface area of fibers, improved their compatibility with asphalt and enhanced their chemical bonding with asphalt, all of which resulted in overall increase of mechanical performance of asphalt. Our research provides foundation for fiber surface modification for applications in road pavement engineering. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码:107 / 116
页数:10
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