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传统厂拌热再生是将旧沥青混凝土路面面层经过铣刨、翻挖,回收集中到再生拌合厂,通过添加专用设备拌合后,将厂拌热再生沥青混凝土运至摊铺现场,经摊铺碾压后形成新的沥青混凝土路面结构层。直投式厂拌热再生是通过提升机将路面回收材料直接投放至拌缸与新骨料及沥青进行干拌,再通过向沥青储存罐里添加沥青再生剂加速骨料与新沥青的融合。本文介绍了直投式厂拌热再生沥青混合料的室内评价方法及施工关键技术。
Traditional hot mix plant regeneration is the old asphalt concrete pavement surface after milling, digging, recycling concentrated to the regeneration of the mixing plant, by adding special equipment mixing, the plant mix hot recycled asphalt concrete to the paving site, the Paving and rolling to form a new asphalt pavement structure layer. Direct-fired hot mix plant regeneration is through the hoist the road recycled material directly to the mixing tank and the new aggregate and asphalt dry mix, and then through the asphalt storage tank to add asphalt recycling agent to accelerate the integration of aggregate and new asphalt. This paper introduces the indoor evaluation method and key construction technology of direct-injection hot mix asphalt plant.