Development of a life extension method for asphalt pavements in urban international airports

针对国内国际机场沥青道面的一种主要破坏形式，探讨了延长其使用寿命的方法。对东京国际机场的现场调查表明，停机坪附近滑行道车辙破坏严重。为了设计耐久性沥青混凝土，研究了级配碎石沥青混合料中刚性集料结构的形成过程，并提出了设计参数的指导原则和建议值，以确定空隙率和沥青膜的适当平衡。

This study investigated a main failure form in asphalt pavements of domestic international airports and discussed a method for life extension. The field investigation on Tokyo International Airport showed that rutting damage in the taxiway near apron area was serious. To design a durable asphalt concrete, procedures for a rigid aggregate structure in asphalt mixtures were studied using classified stone particles.A guideline of design parameters and their recommended values for deciding the appropriate balance of air voids and asphalt film was suggested from the discussion.