The invention relates to a method for enhancing bituminous mixtures by adopting chopped
basalt fibers, belonging to the technical field of novel compound materials. According to the invention, continuous
basalt protofilaments or twistless rovings the surfaces of which are expanded into fibers in certain length, and then the fibers are used for enhancing the bituminous mixtures in a certain
doping proportion and can be respectively used for maintaining the bituminous mixtures used for new construction and reconstruction and extension of highways and SMA and OGFC bituminous mixtures as well as
fiber seals. In addition, the fibers can also be used for the enhancement of high-speed railway packing layer CA
mortar and relevant hydraulic architectures. The chopped
basalt fiber plays roles of enhancing,
toughening and elasticizing the
cracking prevention,
crack resistance and reinforcement and 'bridging' in the enhanced bituminous mixtures, can obviously increase the anti-rutting ability of highways of the enhanced bituminous mixtures and reduces the whole life costs of the enhanced bituminous mixtures; if the fibers are used for high-speed railway plate-type ballastless tracks and CA
mortar, the bending strength and the deformation resistance can be increased, i.e. the fibers play a role of crack prevention and
crack resistance; in addition, the fibers have better anti-
water leakage action if being used for Hydraulic and Hydro-
Power Engineering.