粉煤灰/玄武岩纤维改性沥青混合料配合比优化研究

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中图分类号：U414 文献标志码：A 文章编号：1673-3851（2025）07-0533-08

引用格式：俞烨炜，王修山，李震南，等．粉煤灰/玄武岩纤维改性沥青混合料配合比优化研究[J．浙江理工大学学报（自然科学），2025，53（4）：533-540.

Abstract： To optimize the mix ratio of fly ash and basalt fiber asphalt mixture，the effect of fly ash and basalt fiber on the road performance of asphalt mixture was analyzed. The basalt fiber content，fly ash content and asphalt-stone ratio were taken as influencing factors，and the optimal content of the mixture was obtained through response surface analysis. Then，the road performance of the asphalt mixture with optimized mix ratio was analyzed through Marshall test， immersed Marshall test and low-temperature beam bending test.The results show that the optimal mix ratio of fly ash and basalt fiber asphalt mixture is 6.92% fly ash， 0.39% basalt fiber，and 5.30% asphalt-rock ratio；the maximum error between the predicted value and the measured value of each response index of Marshall stability is only 4.04% ，which shows that the response surface analysis has high reliability；compared with the single fiber asphalt mixture，the stability of the optimal mix ratio mixture is increased by 7.7% ，the residual stability is increased by 7.52% ，and the maximum bending tensile strain is increased by 13.47% . Furthermore，the high temperature stability，low temperature crack resistance， water stability and other indicators are greatly improved. The two materials have a significant composite modification efect on the road performance of AC-13C graded modified asphalt mixture. The optimized mix ratio results in this paper can provide a basis for the use of fly ash and basalt fiber in pavement engineering.

Key Words： road engineering；basalt fiber； fly ash；modified asphalt； response surface methodpavement performance

0 引言

沥青混合料是由石油沥青和矿物结合料在一定温度下拌合而成的工程材料，在高等级路面工程中广泛使用[。（剩余8131字）