河南理工大学学报（自然科学版）2025，Vol.44Issue(2)：186-194,9.DOI:10.16186/j.cnki.1673-9787.2023110016
超强基层沥青路面力学分析与材料制备
Mechanical analysis and material preparation of ultra-high-strength base asphalt pavement
摘要
Abstract
Objectives To improve the structural performance of asphalt pavement and achieve low-carbon goals,an AC+ultra-high-strength base asphalt pavement structure is proposed to reduce the thickness of the asphalt pavement structurue.Methods Bisar software was used to analyze the mechanical response of the ultra-high-strength base pavement structure,proposing the design parameters for the asphalt pavement structure and ultra-high-strength base material.Orthogonal experimental design was then conducted to ana-lyze the influence of silica fume,fly ash,and cement-sand ratio parameters on the mechanical properties of the ultra-high-strength base material.Range and variance analysis were performed to determine the opti-mal mix proportion.Finally,the bonding performance between asphalt layers and the ultra-high-strength base layer was evaluated through splitting tensile tests using five methods:spreading crushed stones,brush-ing grooves,epoxy resin,spraying modified asphalt,and rubber asphalt.Results The results show that when the thickness of the ultra-high-strength base is 0.08 m,with an elastic modulus of 40 GPa,the total thickness of the structure is 0.52 m.The fatigue cracking life of the asphalt mixture and inorganic binder layers in the ultra-high-strength base asphalt pavement is higher than that of a conventional asphalt pave-ment with a total thickness of 0.74 m.The optimal mix ratio for the ultra-high-strength base material is 13%silica fume,11%fly ash,a cement-sand ratio of 0.8,and a water-cement ratio of 0.25.The splitting tensile strength tests indicate that epoxy resin provides the best bonding,followed by crushed stone,and rubber asphalt provides the weakest bonding.Conclusions Under reduced pavement thickness,the AC+ultra-high-strength base asphalt pavement performs better than conventional asphalt pavement.This study proposes a low-carbon and cost-effective asphalt pavement structure and material preparation method.The interlayer bonding performance between the asphalt surface layer and ultra-high-strength base layer is ana-lyzed,and the use of spreading crushed stones is recommended,providing a new feasible approach for composite asphalt pavement.关键词
复合式路面/超高性能混凝土/正交试验/配合比设计/层间结合Key words
composite pavement/ultra-high-performance concrete/orthogonal test/mix proportion design/interlayer bonding分类
交通运输引用本文复制引用
谭波,郑港,李青,谢恩连,刘敬霜..超强基层沥青路面力学分析与材料制备[J].河南理工大学学报（自然科学版）,2025,44(2):186-194,9.基金项目
国家自然科学基金资助项目(52268039) （52268039）
