我区专业养护公路1682.39km,其中沥青路面260余 km,特别是330国道,车辆密度达5000～6000辆,路面严重超龄服役,雨季坑槽连片,对养护的压力很大。我们参照大连市公路管理处科学养护的经验,利用沥青预制块修补坑槽,取得了自己的经验。一、沥青预制块的制作我们根据大连经验制作沥青预制块,采用热料拌和、木模、木锤制作,矿料为粗粒型,油石比5.5%,经实际操作难度较大,不易击 In our district, there are 1682.39km of highway for professional maintenance, of which more than 260km of asphalt pavement, especially 330 national highway, the density of vehicles is 5000-6000. Serious over-pavement service and rainy season pit connection have great pressure on conservation. We refer to Dalian City Highway Management Division of conservation experience, the use of asphalt prefabricated patch repair pit, made his own experience. First, the production of asphalt prefabricated blocks According to our experience in the production of asphalt prefabricated block, the use of hot mix, wood, wood hammer production, ore material coarse type, oil to stone ratio of 5.5%, the actual operation more difficult, not easy to hit