美国SMA混合料路用性能研究

Pavement Performance of Stone Mateix Asphalt (SMA)Mixtures in USA

介绍美国对沥青马蹄脂碎石 ( SMA)路面的研究情况 ,SMA的混合料组成设计 。

Stone Matrix Asphalt (SMA)mixtures have been widely used in the USA since 1991.The Federal Highway Administration awarded a contract to the National Center for Asphalt Technology(NCAT) to deterrmine the performance of SMA pavements. Then NCAT provides a Summary of mix design and performance data obtained from 86 SMA Projects.Data were collected on material and mixture properties,and performance was evaluated on the basis of several factors including rutting, cracking, raveling, and fat spots.