一、前 言 在沥青路面的设计和施工工艺中,在铺筑沥青联结层或单独的沥青磨耗层之前,通常而且在很多情况下在粒料基层的顶面规定要用沥青透层。设计沥青透层的基本目的,是使基层表面结硬和坚韧,提供基层与沥青 I. INTRODUCTION In asphalt pavement design and construction processes, it is usual and in many cases to prescribe the use of bituminous permeable layers on the top surface of the aggregate base prior to paving the asphalt tie layer or the individual asphalt wear layers. The basic purpose of designing a permeable layer of asphalt is to make the surface of the base layer hard and tough, providing a base layer with asphalt