SMA施工工艺研究

Research on SMA Construction Technology

沥青玛蹄脂碎石混合料（SMA）是一种密实式粗集料嵌挤型间断级配沥青混凝土．属于骨架密实结构．空隙率约为3～4％．既有一定数量的粗集料形成骨架结构．又有足够的细集料填充到粗集料之间的空隙中去。SMA兼具嵌挤和密实型混合料的长处．即同时具有较高的粘结力和内摩阻力．

Mastic asphalt mixture of Stone (SMA) is a dense-crowded embedded coarse aggregate level of continuity with asphalt concrete, with a dense skeleton structure and porosity of about 3 to 4 percent. SMA possesses both a certain amount of coarse aggregate form skeleton structure and enough fine aggregate coarse aggregate filled to the gap. SMA embedded advantages of both crowded and dense mixture, thus making SMA maintained advantages as good drainage function and overcome shortcomings as poor durability. Besides, it possesses characteristics of anti-rutting, anti-crack, slide proof, bleeding and durability, and so on.