Optimal Design and Performance of Composite Fiber Asphalt Mortar
In order to find the optimal ratio of lignin fiber,polyester fiber,and basalt fiber in the composite fiber asphalt mortar,the optimal mixture design and rheological test were adopted,the regression model between the ratio of fiber and the rutting factor,the ratio of creep rate to stiffness were established,the effect of fiber ratio on the rheological properties of asphalt mortar was analyzed,and the optimal ratio of composite fiber was obtained.The results show that the high-temperature rheological properties of composite fiber asphalt mortar have multiple relationships with factors,and there are significant interactions between lignin fibers and basalt fibers,and between polyester fibers and basalt fibers;there is a multiple linear relationship between low-temperature rheological properties and factors,and the degree of influence of each factor on the response value is polyester fiber＞basalt fiber＞lignin fiber;the optimal ratio of lignin fiber,polyester fiber,and basalt fiber is 0∶0.55∶0.45.
composite fiberasphalt mortarhigh temperature rheological propertylow temperature rheological propertyoptimal design
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