Generally speaking, the pavement will be damaged by heavy traffic for a long time. In order to eliminate this damage, the whole pavement needs to be structurally repaired. The road cold recycling machine has used all kinds of milling materials from scratch. Combined with its economic processing mode, the cold recycling construction of foamed asphalt has become a pioneering solution, and ultimately achieves the environmental protection and economic effect.

路面冷再生机的组成和作业原理

Composition and operation principle of pavement cold regenerator

组成：路面冷再生机是沥青路面冷再生施工中的首要设备，一般由 动力体系、传动体系、作业设备、喷洒体系和操作操控体系组成。

Composition: pavement cold recycling machine is the primary equipment in asphalt pavement cold recycling construction. It is generally composed of power system, transmission system, operation equipment, spraying system and operation control system.

作业原理：路面冷再生机向前行进时，转子向上旋转铣刨原路面资料，同时， 水经过软管从路面冷再生机衔接的水车中输送过来，并在路面冷再生机的搅拌仓中喷洒。水的输送量经过微处理器操控的泵送体系精确操控，以到达需要的含水量。铣刨转子将水与铣刨料充沛搅拌。液体稳定剂，例如热沥青 (冷再生机自带泡沫沥青发泡设备，可将热沥青加热到160- 180 °C，与少量水混合发泡)可经过专门规划的喷洒嘴被喷洒到搅拌腔；粉状稳定剂如水泥需按规划增加量事先洒布在路面冷再生机前的路面上，路面冷再生机将粉状稳定剂与再生料和水一次性搅拌。如遇再生层原级配不良的情况，可在再生前将所缺少的部分集料洒布在 路面上，经过与旧料搅拌来改善原路面资料的级配。

Operation principle: when the pavement cold regenerator moves forward, the rotor rotates upward to mill the original pavement data. At the same time, the water is transported from the water truck connected with the pavement cold regenerator through the hose and sprayed in the mixing bin of the pavement cold regenerator. The delivery volume of water is accurately controlled by the microprocessor-controlled pumping system to reach the required water content. The milling rotor will fully mix the water with the milling material. Liquid stabilizer, such as hot asphalt (cold recycling machine with foam asphalt foaming equipment, can be heated to 160-180 degrees C hot asphalt, mixing with a small amount of water) can be sprayed to the mixing chamber through a specially designed spray nozzle. Powdery stabilizer such as cement shall be sprinkled on the pavement in front of the pavement cold regenerator according to the planned increase. The pavement cold regenerator will mix the powdery stabilizer with recycled materials and water at one time. If the original gradation of the recycled layer is poor, the missing part of the aggregate can be sprinkled on the pavement before regeneration, and the gradation of the original pavement data can be improved by mixing with the old material.

路面冷再生机的施工办法在全球范围内已得到遍及认可，它在沥青路面的修理方面受到了路途建设部门和修建公司越来越多的关注。

The construction method of pavement cold recycling machine has been widely recognized all over the world. It has attracted more and more attention from road construction departments and construction companies in the repair of asphalt pavement.