冷再生机作为路面修复的专用设备，通过现场对旧路面材料的破碎、拌和与再生利用，重塑路面结构层，在公路养护、市政道路翻新等工程中发挥着不可替代的作用。其作业过程无需将旧路面材料搬运离场，既能减少资源浪费，又能缩短施工周期，改变了传统 “开挖 - 清运 - 重建” 的路面修复模式，成为绿色养护技术的重要代表。

　　As a specialized equipment for road surface repair, the cold recycling machine plays an irreplaceable role in highway maintenance, municipal road renovation and other projects by crushing, mixing and recycling old road materials on site, reshaping the road structure layer. The operation process does not require the removal of old pavement materials, which can reduce resource waste and shorten the construction period, changing the traditional "excavation clearing reconstruction" pavement repair mode and becoming an important representative of green maintenance technology.

　　冷再生机的核心作用在于实现旧路面材料的循环利用，大幅降低资源消耗与环境污染。传统路面修复需将破损的沥青或水泥路面破碎后运至填埋场，不仅占用土地资源，还会产生粉尘与运输尾气污染。冷再生机则能在现场将旧路面材料（包括沥青混合料、水泥稳定碎石、砂石等）破碎后，与新添加的再生剂（如乳化沥青、水泥）充分拌和，重新形成符合强度要求的基层或底基层材料，旧料利用率可达 90% 以上。这种 “就地取材” 的方式，减少了新石料的开采量，也降低了废弃物运输量，尤其在石料资源匮乏或运输成本高的地区，经济效益与环保效益更为显著。

　　The core function of a cold recycling machine is to achieve the recycling of old road materials, significantly reducing resource consumption and environmental pollution. Traditional road surface repair requires crushing damaged asphalt or cement pavement and transporting it to landfills, which not only occupies land resources but also generates dust and transportation exhaust pollution. The cold recycling machine can crush the old pavement materials (including asphalt mixture, cement stabilized crushed stone, sand and gravel, etc.) on site, fully mix them with newly added recycling agents (such as emulsified asphalt, cement), and re form base or sub base materials that meet the strength requirements. The utilization rate of old materials can reach over 90%. This "local material" method reduces the mining output of new stone and the transportation of waste. Especially in areas where stone resources are scarce or transportation costs are high, economic and environmental benefits are more significant.

　　在施工效率提升方面，冷再生机通过一体化作业流程缩短路面修复工期。传统路面修复需经历开挖、清运、摊铺、碾压等多个环节，各环节需不同设备配合，工序衔接耗时较长。冷再生机可一次性完成旧路面破碎、材料拌和、摊铺整型等工序，作业效率大幅提升，修复相同长度的公路所需时间明显缩短。对于交通流量大的路段（如城市主干道），这种高效作业能减少交通中断时间，降低因施工造成的交通拥堵影响，通过半幅施工、半幅通行的方式，可实现 “边施工边通车”，最大限度减少对市民出行的干扰。

　　In terms of improving construction efficiency, the cold recycling machine shortens the road repair period through an integrated operation process. Traditional road surface repair involves multiple stages such as excavation, transportation, paving, and compaction, which require different equipment to cooperate and take a long time to connect the processes. The cold recycling machine can complete the processes of old road surface crushing, material mixing, paving and shaping in one go, greatly improving operational efficiency and significantly reducing the time required to repair roads of the same length. For road sections with high traffic flow (such as urban main roads), this efficient operation can reduce traffic interruption time and minimize the impact of traffic congestion caused by construction. Through the method of half construction and half traffic, it is possible to achieve "simultaneous construction and traffic opening", minimizing interference with citizens' travel.

　　冷再生机能够针对性处理不同类型的路面病害，提升修复后路面的结构强度。对于沥青路面的龟裂、车辙、沉陷等病害，冷再生机可根据病害深度调整破碎拌和深度，将破损层与部分健康基层一并破碎，加入适量乳化沥青后重新拌和，形成均匀的再生沥青基层，其抗压强度与抗变形能力可达到新建路面的较高比例。对于水泥路面的断板、裂缝等问题，冷再生机破碎后添加水泥作为稳定剂，拌和后形成的水泥稳定再生基层，能有效消除原路面的应力集中点，减少修复后路面的反射裂缝。此外，冷再生机可通过精确控制材料配合比，根据设计要求调整再生层的强度等级，满足不同交通荷载的需求。

　　The cold recycling machine can target different types of road surface diseases and improve the structural strength of the repaired road surface. For diseases such as cracking, rutting, and sinking on asphalt pavement, the cold recycling machine can adjust the crushing and mixing depth according to the depth of the disease. The damaged layer and some healthy base layer can be crushed together, and an appropriate amount of emulsified asphalt can be added and re mixed to form a uniform recycled asphalt base layer. Its compressive strength and deformation resistance can reach a high proportion of new pavement. For problems such as broken boards and cracks in cement pavement, cement is added as a stabilizer after being crushed by a cold recycling machine. The cement stabilized recycled base formed after mixing can effectively eliminate stress concentration points on the original pavement and reduce reflection cracks on the repaired pavement. In addition, the cold recycling machine can adjust the strength grade of the recycling layer according to design requirements by precisely controlling the material mix ratio, to meet the needs of different traffic loads.

　　在成本控制方面，冷再生机作业能显著降低路面修复的综合费用。直接成本上，由于旧料利用率高，新料采购费用可减少 60%-70%；运输费用降低（减少旧料外运与新料进场的双向运输）。间接成本上，施工周期缩短意味着机械租赁费用与人工费用减少；交通管制成本降低（如临时围挡、交通疏导人员的投入减少）。据测算，采用冷再生技术的路面修复工程，总成本通常比传统工艺低 30%-50%，尤其适合预算有限的养护工程或低等级公路修复。

　　In terms of cost control, the operation of cold recycling machines can significantly reduce the overall cost of road surface repair. In terms of direct costs, due to the high utilization rate of old materials, the procurement cost of new materials can be reduced by 60% -70%; Reduced transportation costs (reducing the two-way transportation of old materials and new materials entering the site). In terms of indirect costs, shortening the construction period means a reduction in machinery rental and labor costs; The cost of traffic control has been reduced (such as temporary fences and reduced input of traffic diversion personnel). According to calculations, the total cost of road surface repair projects using cold recycling technology is usually 30% -50% lower than traditional processes, especially suitable for maintenance projects with limited budgets or the repair of low-grade highways.

　　冷再生机通过材料循环利用、效率提升、成本降低等多重作用，推动路面修复技术向绿色化、集约化方向发展。其作业过程不仅解决了旧路面材料的处理难题，还能保证修复后路面的使用性能，延长道路使用寿命。随着养护技术的不断升级，冷再生机的功能也在拓展（如智能化控制拌和比例、精准调节压实度），进一步提升了路面修复的质量与可靠性，成为现代道路养护体系中的关键设备。

　　The cold recycling machine promotes the development of road surface repair technology towards green and intensive direction through multiple functions such as material recycling, efficiency improvement, and cost reduction. The homework process not only solves the problem of handling old pavement materials, but also ensures the performance of the repaired pavement and extends the service life of the road. With the continuous upgrading of maintenance technology, the functions of cold recycling machines are also expanding (such as intelligent control of mixing ratio, precise adjustment of compaction degree), further improving the quality and reliability of road surface repair, and becoming a key equipment in the modern road maintenance system.

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