就地冷再生摊铺工艺

　　On site cold recycling paving process

　　虽然生产冷再生材料有几种不同的方法，但其摊铺工艺与典型的铣刨回填工艺相似。

　　Although there are several different methods for producing cold recycled materials, their paving process is similar to typical milling and backfilling processes.

　　在传统的铣刨回填工艺中，摊铺作业由铣刨机将铣刨好的材料送入卡车。废料被运走，工作人员跟随铣刨机清理剩余的灰尘和碎屑。然后，摊铺人员跟进铺设新的沥青。在施工现场、沥青搅拌站和垃圾填埋场或再生沥青（RAP）料堆之间来回运输材料可能需要数百卡车。

　　In the traditional milling and backfilling process, the paving operation first involves the milling machine feeding the milled material into the truck. The waste was transported away, and the staff followed the milling machine to clean up the remaining dust and debris. Then, the paving personnel follow up to lay new asphalt. Transporting materials back and forth between construction sites, asphalt mixing plants, and landfills or recycled asphalt (RAP) piles may require hundreds of trucks.

　　采用就地冷再生工艺时，几乎所有材料都留在施工现场。再生机将沥青粉碎，然后将粘合剂注入材料中，材料随后被输送到摊铺机。摊铺机紧跟在再生机后面运行，将材料铺回原位，两到三个压路机跟在后面进行压实。再生材料压实后，传统的摊铺机便会铺设一层磨耗层——厚度为一英寸半到两英寸的热拌沥青路面。

　　When using on-site cold recycling technology, almost all materials are left at the construction site. The recycling machine crushes the asphalt and then injects the binder into the material, which is then transported to the paver. The paver runs closely behind the rejuvenator, laying the material back in place, and two to three rollers follow behind to compact it. After compacting the recycled materials, traditional pavers will lay a layer of wear layer - a hot mix asphalt pavement with a thickness of one and a half inches to two inches.

　　泡沫沥青这种粘合剂是将再生沥青 (RAP) 材料打造成柔韧耐用基层的秘诀。它由加热 175 摄氏度的普通沥青制成，并在高压下注入少量水和空气，使其发泡膨胀。泡沫沥青被注入冷再生机内的再生沥青 (RAP) 中，终产品被称为沥青稳定材料 (BSM)。

　　Foam asphalt is the secret of making recycled asphalt (RAP) material into flexible and durable base course. It is made of ordinary asphalt heated to 175 degrees Celsius and injected with a small amount of water and air under high pressure to make it foam and expand. The foam asphalt is injected into the recycled asphalt (RAP) in the cold recycling machine, and the final product is called asphalt stabilized material (BSM).

　　这一工艺效率显著提高，并节省了与传统铺路过程相关的运输和材料成本。Stahl的热情显而易见：“当我们进行再生时，好处是于几乎所有材料，95%的材料，都能够保持原位。”

　　This process significantly improves efficiency and saves transportation and material costs associated with traditional paving processes. Stahl's enthusiasm is evident: "When we carry out regeneration, the benefit is that almost all materials, 95% of them, can remain in place

　　Wirtgen提供CR系列和WR系列冷回收机。CR系列机器需要传统的铺路机，而WR系列冷回收机和土壤稳定机则不需要。根据斯塔尔的说法，对于将骨料回收到沥青中的812英寸深度的典型全深度再生（FDR）应用，其中骨料被回收用于沥青，设备组将使用一台橡胶轮胎WR系列机，以及一台羊脚压路机和一台平地机，然后再加两台压实机。羊脚压实机是实现该深度厚度的适当压实所必需的。

　　Wirtgen offers CR series and WR series cold recycling machines. The CR series machines require traditional paving machines, while the WR series cold recycling machines and soil stabilizers do not. According to Starr, for typical full depth recycling (FDR) applications that recycle aggregate into asphalt at depths of 8 to 12 inches, where the aggregate is recycled for asphalt, the equipment team will use a rubber tire WR series machine, as well as a sheep foot roller and a grader, followed by two compactors. The sheep foot compactor is necessary to achieve appropriate compaction at this depth and thickness.

　　CR机器非常适合三到五英寸的部分深度更换。需要更少的整体压实，可以通过在铺路机上安装标准振动熨平板来实现，然后使用压路机即可完成。在这种情况下，无需使用羊脚压路机或平地机。

　　CR machines are very suitable for partial depth replacement of three to five inches. Less overall compaction is required, which can be achieved by installing a standard vibrating screed on the paving machine and then using the roller to complete it. In this case, there is no need to use a sheep foot roller or grader.

　　当与高密度熨平板配对时，CR机器可用于FDR，但这并不常见。Stahl将这种应用称为“摊铺机铺设FDR”。

　　When paired with high-density ironing boards, CR machines can be used for FDR, but this is not common. Stahl refers to this application as "paver laying FDR".

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