关键词: 沥青混合料, 纤维, 性能

Abstract: This experiment analyzed the road function properties of four familiar type's fibers in bituminous concrete by contrast, which are lignin fibers, acrylic fibers, polyester fibers and mineral fibers. The fibers can notably enhance the performance of bituminous concrete, but the function of fibers and the degrees of enhancement have bigger differences. The acrylic fibers can enhance the high temperature function, low temperature function and the water stability properties of bituminous concrete best, and the polyester fibers and lignin fibers can respectively enhance the above properties less and lest. Although the mineral fibers has the natural function advantage, its function performances are common in the mixture. So the choice of fibers used for road must be considered comprehensively combined with its function in bituminous mixture.

Key words: bituminous concrete mixture, fiber, performance