公路沥青路面弯沉与耐久性关系探讨

Discussion on the Relationship Between Defl ection and Durability of Highway Asphalt Pavement

公路沥青路面的性能不仅决定其使用寿命,对行车安全的影响也不容忽视。文章分析了沥青路面弯沉机制与影响因素,以及沥青路面耐久性评价与影响因素,基于实验研究与理论分析相结合的方法,以弯沉与耐久性的内在关联为重点,对沥青路面的耐久性进行了全方位考核。研究结果表明,柏油路面过度弯沉严重影响路面使用寿命和行车安全,弯道沉降值每增加1 mm,路面耐久性指标下降约2.5%。

The performance of highway asphalt pavement not only determines its service life,but also has the impact on driving safety that can not be ignored.This paper analyzes the defl ection mechanism and infl uencing factors of asphalt pavement,as well as its durability evaluation and influencing factors.Based on the combination of experimental research and theoretical analysis,focusing on the internal relationship between defl ection and durability,the durability of asphalt pavement is comprehensively evaluated.The results show that the excessive deflection of asphalt pavement seriously aff ects the service life and driving safety of the pavement.For every 1 mm increase in deflection value,the durability index of the pavement decreases by about 2.5%.