沥青路面反射裂缝影响因素分析及抗裂性能提升技术研究

Analyze the Influencing Factors of Reflective Crack in Asphalt Pavement and Research on Improving Anti-crack Performance

半刚性基层开裂一直是世界性难题,在荷载、温度、湿度等耦合作用下逐步演变为沥青路面裂缝。路面开裂已经成为我国最为典型的路面病害类型,严重影响路面使用的耐久性。本研究分析了荷载场、温度场以及层间接触状态对裂缝产生与发展的影响,通过对沥青路面混合料类型、胶结料种类进行比选研究,以及层间接触及粘结状态对抗裂影响分析,提出消能层、材料抗裂功能提升、高粘层间结合状态抗裂技术措施,将抗裂技术效果与沥青路面结构层相匹配,进而大幅度提升路面耐久性。

Cracking of semi-rigid bases is a worldwide problem.Under the effect of vehicle load,temperature and humidity,it gradually develops into cracks of asphalt pavement.Pavement cracking has become the most typical type of pavement disease in our country.It has seriously affected the durability of pavement.In this paper,this research focuses on fracture generation and development path under load field,temperature field and interlayer contact state.Through the comparing the types of asphalt pavement mixture,cement,as well as the effect of interlayer bonding state on anti-cracking,proposed the anti-cracking measures of energy dissipation layer,material anti-cracking reinforcement,and high viscosity interlayer bonding state.Integrating the anti-cracking technology with the asphalt pavement structure layer,thus greatly improves the durability of the road surface.