Comprehensive performance evaluation of fiber asphalt mixture based on weight coefficient grey target theory
(1. School of Materials Science and Engineering, Chang′an University, Xi′an, Shaanxi
710064, China; 2. School of Civil Engineering and Architecture, Henan University of
Technology, Zhengzhou, Henan 450001, China; 3. Anhui Transport Consulting ＆ Design
Institute Co.,Ltd., Hefei, Anhui 230088, China; 4. School of Highway, Chang′an
University, Xi′an, Shaanxi 710064, China)
Abstract：To investigate the comprehensive performance of fiber asphalt mixture, four
types of fiber asphalt mixture with polyester, cellulose, basalt and sepiolite fibers were
studied by the tests of wheel tracking, low temperature bending, freezethaw splitting
and fatigue stability. Taking dynamic stability, low temperature bending strain, freeze
thaw splitting strength ratio, fatigue life and cost per square meter as evaluation
indexes, the weight coefficient grey target theory was proposed to determine the best
scheme based on road performance and costeffectiveness. The results show that the grey
target model can be improved by the introduction of entropy weight method to effectively
solve the problems of traditional grey target evaluation model and increase the evaluation
accuracy. The basalt fiber asphalt mixture has better road performance and cost
effectiveness than other three fiber asphalt mixtures under the same conditions.
2016, Vol. 37 
