纤维沥青混合料抗裂性的试验评价方法

Test on Anti-Cracking Performance of Fiber-reinforced Asphalt Mixture

根据马歇尔试验方法设计AC沥青混合料和SMA沥青混合料,采用间接拉伸试验、三点弯曲试验和开口半圆弯拉试验3种试验方法比较纤维沥青混凝土抗裂性能,比较不同试验方法和试验评价指标的稳定性。研究表明,最大应变和应变能是较为稳定的评价指标;间接拉伸试验试件制备较为简单,比较适合工程应用,并且试验结果较为稳定。

AC asphalt mixture and SMA asphalt mixture are designed using Marshall Design Method,the crack resistance performance is compared based on indirect tensile test,three point beam bending test and semicircle flexural tensile test,and the stability of different test methods and evaluation indexes are compared to obtain the optimal test method and evaluation index.