路面再生技术就是充分利用现有路面的旧材料，对需要维修养护的旧路面进行翻新改造，从而恢复其使用功能。利用专用路面再生机械将旧沥青路面及部分基层材料原地拌和后，掺加适量结合料，使其成为新路的基层或底基层，以达到对旧沥青路面的利用，达到简化施工程序、降低工程造价之目的。

Road surface regeneration technology is to fully utilize the old materials of the existing road surface, renovate and renovate the old road surface that needs maintenance, in order to restore its functional use. Using specialized pavement recycling machinery to mix the old asphalt pavement and some base materials in place, adding an appropriate amount of binder to make it the base or sub base of the new road, in order to achieve the utilization of the old asphalt pavement, simplify the construction process, and reduce project costs.

沥青混凝土路面再生技术按照掺加结合料的不同分为两种：

The regeneration technology of asphalt concrete pavement can be divided into two types according to the different types of added binders:

（1）将旧面层的结合料、旧集料进行再生，组配成合格的再生沥青混合料重新铺筑路面使用，叫做再生利用。

(1) Recycling the binder and aggregate of the old surface layer, assembling them into qualified recycled asphalt mixture, and re paving the road surface for use is called recycling.

（2）在旧路面层破碎后仅需掺加少量的结合料或矿料后使用，叫做重复利用。目前，国内就地冷再生一般为掺加少量的水泥或石灰等无机结合料，冷再生由专门的再生机械完成，其核心为一装备有大量硬质合金刀具的工作转子。转子旋转时，铣刨现有铺装材料并将新旧材料拌和再生。再铣刨的同时，来自由再生机推动前行的水罐车的水通过软管输送给再生机，并由其喷洒系统喷入其拌和罩壳内。加入的水经过微机控制洒水系统的精确计量，然后被充分地拌和到材料中，以便获得压实所需要的含水量。以水泥为粘结料的就地冷再生目前为常见，再生过程中，水泥与现有铺装材料被充分均匀地拌和再一起。压实后，材料中的颗粒被粘结到一起，形成一个贫水泥的稳定基层，结果使得在不必要添加新骨料的同时，现有新结构层的承载力显著提高。

(2) After the old pavement layer is crushed, only a small amount of binder or mineral material needs to be added before use, which is called reuse. At present, on-site cold regeneration in China generally involves adding a small amount of inorganic binders such as cement or lime. Cold regeneration is completed by specialized regeneration machinery, with the core being a working rotor equipped with a large number of hard alloy cutting tools. When the rotor rotates, the existing pavement material is milled and mixed with new and old materials for regeneration. At the same time of milling and planing, the water from the water tank truck pushed forward by the free regeneration machine is transported to the regeneration machine through a hose and sprayed into its mixing cover through its spraying system. The added water is accurately measured by a microcomputer controlled sprinkler system and then thoroughly mixed into the material to obtain the optimal moisture content required for compaction. The on-site cold regeneration using cement as the bonding material is currently the most common. During the regeneration process, cement is thoroughly and uniformly mixed with existing paving materials. After compaction, the particles in the material are bonded together to form a stable base layer of lean cement, resulting in a significant increase in the bearing capacity of the existing new structural layer without the need to add new aggregates.