沥青混凝土热再生方法分厂拌热再生和就地热再生两种,两者各有利弊。从再生的质量方面比较,前者由于计量精确、筛分严格,故容易保证施工配合比的精度,而后者较难控制配合比的准确性;前者采用双层滚筒拌合设备,旧料依靠新集料在加热过程中产生的辐射热来加热,并通过内层滚筒外表面叶片进行搅拌,故加热过程均匀,一般不会产生过热老化现象,相反,后者旧料加热不均匀,部分沥青老化加剧。但是,前者存在旧料往返运输、需要复杂的称量系统和供料设 Hot asphalt recycling plant branch hot mix regeneration and on-site thermal regeneration of two, both have their own advantages and disadvantages. From the quality of renewable compared to the former due to precise measurement, screening strict, it is easy to ensure the accuracy of the construction mix, while the latter is more difficult to control the accuracy of the mix; the former with double drum mixing equipment, the old materials rely on the new set The radiant heat generated in the heating process is heated by the blades on the outer surface of the inner drum for stirring. Therefore, the heating process is uniform and generally does not cause overheating and aging. On the contrary, the heating of the latter is uneven and the aging of some of the asphalt worsens . However, the former has the problem of back-and-forth transportation of used materials and requires complex weighing systems and feeding facilities