With the acceleration of urbanization process, large-scale demolition and maintenance of the road surface have been started all over the country. The pavement maintenance needs to use the cold recycling machine. Let's learn about it!
Generally speaking, the roadbed will be damaged when the pavement is subjected to heavy traffic for a long time. In order to eliminate this damage, it is necessary to carry out structural maintenance on the whole pavement. The road cold recycling machine reuses all the milling materials, and its economic treatment mode makes the cold recycling construction of foamed asphalt become a pioneering solution, and finally achieves the environmental protection and economic role.
Composition and working principle of pavement cold recycling machine
Composition: pavement cold recycling machine is the main equipment in asphalt pavement cold recycling construction, which is generally composed of power system, transmission system, working device, spraying system and control system.
工作原理：路麵冷再生機向前行進時，轉子向上旋轉銑刨原路麵材料，同時， 水通過軟管從路麵冷再生機連接的水車中輸送過來，並在路麵冷再生機的拌和倉中噴灑。水的輸送量通過微處理器控製的泵送係統準確控製，以達到需要的含水量。銑刨轉子將水與銑刨料充分拌和。液體穩定劑，例如熱瀝青 (冷再生機自帶泡沫瀝青發泡裝置，可將熱瀝青加熱到160- 180 °C，與少量水混合發泡)可通過專門設計的噴灑嘴被噴灑到拌和腔；粉狀穩定劑如水泥需按設計添加量事先灑布在路麵冷再生機前的路麵上，路麵冷再生機將粉狀穩定劑與再生料和水一次性拌和。如遇再生層原級配不良的情況，可在再生前將所缺少的部分集料灑布在 路麵上，通過與舊料拌和來改善原路麵材料的級配。
Working principle: when the road surface cold recycling machine moves forward, the rotor rotates upward to mill the raw road materials. At the same time, water is transported from the water truck connected with the road cold recycling machine through the hose, and is sprayed in the mixing bin of the road cold recycling machine. The water delivery capacity is accurately controlled by the microprocessor controlled pumping system to achieve the required water content. The milling rotor fully mixes water and milling material. Liquid stabilizer, such as hot asphalt (cold recycling machine) with foam asphalt foaming device, can heat asphalt to 160-180. (C, mixed with a small amount of water) can be sprayed into the mixing chamber through a specially designed spray nozzle; the powder stabilizer such as cement should be sprayed on the road surface in front of the pavement cold recycling machine according to the design amount, and the powder stabilizer is mixed with recycled materials and water at one time. If the original gradation of the recycled layer is poor, the missing aggregate can be spread on the pavement before regeneration, and the gradation of the raw pavement material can be improved by mixing with the old material.