Experimental Study on Road Performance of Mixed Fiber Modified Asphalt Mixture
Basalt fiber(BF)and polypropylene fiber(PP)with different content were mixed into asphalt mixture for modification and the high temperature rutting,low temperature trabecular bending,immersion Marshall,freeze-thaw splitting and bending fatigue were used.Laboratory tests were carried out to comprehensively investigate its road performance.the modification of AC-20 grade as phalt mixture for bridge deck pavement was studied.The results show that basalt fiber can effectively improve the strength and hardness of asphalt mixture,while PP fiber can provide better flexibility and viscosity of asphalt mixture.Single-doped BF fiber can effectively improve the high temperature stability,low temperature crack resistance and fatigue resistance of asphalt mixture.The effect of single-doped PP fiber on improving water stability is better than that of BF,and the service performance and service life of asphalt mixture can be comprehensively improved by using a reasonable proportion of BF and PP fiber.
万方数据
维普
