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随着我国城市建设事业的发展和交通量的增长,大多数城市道路的路面型式已不能满足需要。以哈尔滨市为例,全市街道黑色路面,仅占路面总面积的17%左右,其余都是泥结碎石和级配路面等,这些旧有路面从当前来看都迫切需要进行改造和加强。过去哈市历来都采用碎石作为沥青混凝土的骨料,成本较高,产量少,远远满足不了旧路改造的需要。如果能够用一部分或全部分砾石代替碎石,则可以大大降低沥青混凝土的成本,降低路面的造价。去年在本市试用过砾石沥青混凝土,从施工和使用情况来看,证明
With the development of urban construction in our country and the increase of traffic volume, most urban road pavement patterns can not meet the needs. Taking Harbin as an example, the black pavement of the city’s streets only accounts for about 17% of the total pavement area. The rest are clay-bonded gravel and graded pavement. These old pavement areas urgently need to be rebuilt and strengthened from the current perspective. In the past, Hashi City always used gravel as the aggregate of asphalt concrete, resulting in higher costs and less output, which could not meet the needs of the transformation of old roads. If you can use part or all of gravel instead of gravel, you can greatly reduce the cost of asphalt concrete, reduce the cost of the road. Last year in the city tried gravel asphalt concrete, from the construction and use of view, that