Fiber-Reinforced Asphalt Mixture Design on Anti-Skid Surfacing for Field Testing High-Speed Vehicles on Pavements

Abstract

Fiber can absorb asphalt binder and therefore reinforce and stabilize the asphalt mixture structure and also prevent the asphalt from the leaking, which occurs in the process of mixing and transport. In this study, three kinds of fiber (polyester fiber, polypropylene fiber, and lignin fiber) are used to evaluate the relationship between the fiber types and mechanic performance of SMA-13 fiber asphalt mixture, which is specially designed for field tests of high-speed vehicles on pavements. The micro-surface characteristics of fiber and aggregates were studied by SEM and image analysis. Marshall stability and splitting strength were used to measure the properties of the asphalt mixture. In addition, a field test, including measures for curve-section edge, curve-section center, straight-section edge, and straight-section center, was conducted to evaluate the skid resistance of the high-speed vehicles that test field pavement. The results show that the Marshall stabilities of asphalt mixture with three kinds of fibers have been improved, whereas the stability of asphalt mixture prepared by polypropylene fiber and polyester fiber particularly increased before immersion. Among the three kinds of fiber asphalt mixtures, the polyester fiber asphalt mixture has enhanced water susceptibility. Skid resistance in the field test indicated that high skid resistance and good surface-texture depth were achieved.

Research on Basalt Fiber Oil/Asphalt Absorption Performance and Test Methods Suitable for Asphalt Mixture with Different Structures

“…Due to the characteristics of gap-graded asphalt mixtures, the coarse aggregates were well embedded to form a skeleton, which bore the main compressive load and the fiber bore little pressure. The incorporation of fiber in asphalt mixtures mainly adsorbed asphalt and filled voids [19][20][21]. In densegraded asphalt mixtures, the coarse aggregates were not embedded in each other to form a skeleton, while the fibers in the asphalt mixture played the role of the reinforcement, bridging and crack resistance, and the fibers needed to bear greater pressure [22].…”

Modification and Enhancing Contribution of Fiber to Asphalt Binders and Their Corresponding Mixtures: A Study of Viscoelastic Properties

“…Nowadays, lignin fiber, polyester fiber, polypropylene fiber, glass fiber, etc., are the most often used fibers in road engineering. Several qualities of the asphalt mixture are enhanced to varying degrees by different fibers [ 8 , 9 , 10 , 11 , 12 ]. In recent years, the enhancement of fiber on the viscoelastic properties of asphalt binders has been the main focus of research on fiber-reinforced asphalt mixtures [ 13 , 14 ].…”