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4-1 维修路面用的沥青沥青是石油工业制品,在38℃以下的常温条件下为固体或半固体。在道路维修施工中,为使其能充分地包裹骨料,必须将沥青制成液体状态,其方法有以下三种: (1) 用加热沥青锅或贮藏罐加热; (2) 将沥青溶于石油溶剂(稀释沥
4-1 asphalt pavement maintenance asphalt pavement is petroleum products, at room temperature below 38 ℃ under the conditions of solid or semi-solid. In road maintenance construction, the asphalt must be made into a liquid state so that it can fully cover the aggregate. There are three ways to do this: (1) heating with a heated asphalt tank or storage tank; (2) dissolving the asphalt in Petroleum solvent (diluted leaching