国道321线SMA技术应用

The Application of SMA Technology on National Route 321

SMA混合料是近些年来国内外研究的一个热点。文中首先介绍了SMA的理论、主要特点和使用情况,然后结合国道G321线肇庆市段路面大修工程,简要介绍SMA组合设计,并通过用马歇尔试验法确定SMA混合料配合比。最后对SMA混合料在加铺层设计中涉及的一些关键问题提出一些体会。

SMA mix is one of the heat material in recent study.First,the paper introduces the Stone Mastic Asphalt （SMA） technology, the characteristics, and its operational application, and then, the paper discusses the SMA mixture design the optimal mix for SMA can be determined with Marshall Tests. The discussion is developed with the pavement rehabilitation project on National Route 321 （Zhaoqing segment）, At last, the paper puts forward with some empirical points in designing SMA mix for the pavement overlaying.