Maintenance method of ultrathin overlay for white-to-black pavement

The invention relates to the technical field of white-to-black road treatment, in particular to an ultrathin overlay maintenance method for a white-to-black road surface. The method comprises the following steps: 1) treating an original cement concrete pavement so that the pavement structure is complete, clean and smooth; (2) uniformly stirring and mixing the asphalt mixture, and trowelling by using a flat plate type vibration rammer compactor after paving; the asphalt mixture comprises the following components in parts by weight: 20-30 parts of modified emulsified asphalt, 3-5 parts of basalt fibers, 25-40 parts of limestone particles, 1-5 parts of cement, 1-5 parts of a silane coupling agent and 20-50 parts of water, and (3) after the water in the asphalt mixture is completely evaporated, rolling to obtain the ultrathin asphalt overlay of 1-2cm. 本发明涉及白改黑路处理技术领域，具体而言，涉及一种用于白改黑路面的超薄罩面层养护方法。该方法包括：1)对原水泥混凝土路面进行处理以使得路面结构完整、清洁、平顺；2)将沥青混合料搅拌混匀，铺摊后使用平板型震动夯实机抹平；所述沥青混合料重量份计，包括改性乳化沥青20～30份、玄武岩纤维3～5份、石灰岩颗粒25～40份、水泥1～5份