摘要
纤维沥青混合料是一种长寿命沥青路面新材料,由于纤维种类及掺量的差异对沥青混合料的性能有较大影响,因此将采用3种纤维种类(玄武岩纤维、玻璃纤维、聚酯纤维)及5种纤维掺量(0.1％、0.2％、0.3％、0.4％、0.5％)作为研究对象,研究纤维沥青混合料的路用性能.结果表明:玄武岩纤维、玻璃纤维、聚酯纤维的最佳掺量分别为0.4％、0.3％、0.3％,最佳掺量下玄武岩纤维增强效果最优,动稳定度提高30.0％,贯入强度提高14.0％,最大弯拉应变提高20.1％,浸水残留稳定度提高1.9％,冻融劈裂强度比提高1.7％.
Abstract
Fiber asphalt mixture is a new material for long-term asphalt pavement.Due to the significant impact of fiber types and dosages on the performance of asphalt mixture,this paper will use different fiber types(basalt fiber,glass fiber,polyester fiber)and contents(0.1％,0.2％,0.3％,0.4％,0.5％)as the research object,and first use Marshall test design method to test the raw material performance of AC-13 asphalt mixture.Afterwards,rut test,low temperature trabecular bending test,immersion Marshall test and freeze-thaw splitting test were conducted to study the road performance of fiber asphalt mixture.The results show that the optimal dosage of basalt fiber,glass fiber,and polyester fiber is 0.4％,0.3％,and 0.3％,respectively.Under the optimal dosage,the reinforcement effect of basalt fiber is the best,with a dynamic stability increase of 30.0％,a penetration strength increase of 14.0％,a maximum bending tensile strain increase of 20.1％,a residual stability increase of 1.9％after immersion,and a freeze-thaw splitting strength ratio increase of 1.7％.
基金项目
扬州大学大学生创新项目(202311117036Z)
NETL
NSTL
万方数据