冷再生機是道路養護與改造工程中的關鍵設備，通過對舊路面材料的現場再生利用，實現路面結構的修復與升級，因其的特點，在城鄉道路維護中應用廣泛。

　　Cold recycling machine is a key equipment in road maintenance and renovation projects. By on-site recycling of old pavement materials, it achieves the repair and upgrading of pavement structures. Due to its environmentally friendly and efficient characteristics, it is widely used in urban and rural road maintenance.

　　在舊路面翻新工程中，冷再生機承擔著核心的破碎與拌和任務。當瀝青路面出現龜裂、沉陷或車轍等病害時，無需將舊路面材料全部清運出場，冷再生機可直接對路面進行銑刨破碎，將原有瀝青面層、基層材料粉碎成粒徑均勻的顆粒（通常控制在 30 毫米以下）。同時，設備自帶的噴灑系統會按比例添加再生劑（如乳化瀝青、水泥或石灰），通過銑刨轉子的高速攪拌，使舊料與新添加的結合料充分混合，形成符合強度要求的再生混合料。這一過程能保留 80% 以上的舊路面材料，大幅減少建筑垃圾外運量，尤其適合濟南那些周邊場地有限、運輸不便的城區道路翻新。

　　In the renovation project of old road surfaces, the cold recycling machine undertakes the core tasks of crushing and mixing. When asphalt pavement cracks, sinks, or ruts, there is no need to remove all the old pavement materials from the site. The cold recycling machine can directly mill and crush the pavement, crushing the original asphalt surface layer and base material into uniformly sized particles (usually controlled below 30 millimeters). At the same time, the equipment's built-in spraying system will add rejuvenators (such as emulsified asphalt, cement, or lime) in proportion, and through high-speed mixing by milling rotors, the old materials and newly added binders will be fully mixed to form a regenerated mixture that meets the strength requirements. This process can preserve more than 80% of the old pavement materials, significantly reducing the amount of construction waste transported outside, especially suitable for the renovation of urban roads in Jinan with limited surrounding areas and inconvenient transportation.

　　冷再生機可直接在現場完成基層與面層的再生施工，簡化傳統修路流程。對于基層破損的道路，設備先對原基層進行深度破碎（通常達 15-30 厘米），摻入水泥等穩定劑后拌和均勻，經碾壓后形成新的基層結構；隨后在其上再生瀝青面層，實現 “一次施工、兩層成型”，比傳統 “開挖 - 清運 - 回填” 工藝縮短 50% 以上工期。在鄉村道路升級改造中，冷再生機可將原水泥路面破碎后，添加乳化瀝青再生劑，拌和后碾壓成瀝青基層，既解決了水泥路面接縫多、易碎裂的問題，又降低了新材料采購成本，每可節省材料費用 30% 左右。

　　The cold recycling machine can directly complete the recycling construction of the base and surface layers on site, simplifying the traditional road repair process. For roads with damaged base layers, the equipment first deeply crushes the original base layer (usually up to 15-30 centimeters), mixes it evenly with stabilizers such as cement, and forms a new base structure after rolling; Subsequently, the asphalt surface layer is regenerated on it, achieving "one-time construction, two-layer molding", which shortens the construction period by more than 50% compared to the traditional "excavation clearing backfilling" process. In the upgrading and renovation of rural roads, the cold recycling machine can crush the original cement pavement, add emulsified asphalt rejuvenator, mix and roll it into asphalt base, which not only solves the problem of multiple joints and fragility of cement pavement, but also reduces the cost of new material procurement, saving about 30% of material costs per kilometer.

　　適應多種路面類型，靈活應對不同修復需求。在瀝青路面養護中，冷再生機能針對性處理表層病害，通過添加再生劑恢復舊瀝青的黏結性能，使再生混合料的馬歇爾穩定度達到 8kN 以上，滿足路面承載要求。對于水泥穩定碎石基層，可摻入 3%-5% 的水泥作為再生結合料，拌和后形成的基層 7 天無側限抗壓強度能達到 3-5MPa，適合中等交通量道路使用。甚在砂石路面升級為硬化路面時，冷再生機可將原有砂石材料與水泥拌和，直接碾壓成型，減少砂石料外運與新料進場，適應鄉村地區就地取材的需求。

　　Adapt to various types of road surfaces and flexibly respond to different repair needs. In the maintenance of asphalt pavement, cold recycling can effectively treat surface diseases, restore the bonding performance of old asphalt by adding recycling agents, and achieve a Marshall stability of over 8kN for the recycled mixture, meeting the pavement bearing requirements. For cement stabilized crushed stone base, 3% -5% cement can be added as recycled binder. After mixing, the base formed can achieve a 7-day unconfined compressive strength of 3-5 MPa, which is suitable for use on medium traffic roads. Even when upgrading sand and gravel pavement to hardened pavement, the cold recycling machine can mix the original sand and gravel materials with cement, directly roll them into shape, reduce the transportation of sand and gravel materials and the entry of new materials, and meet the demand for local materials in rural areas.

　　低溫作業特性拓展了施工窗口期。與熱再生設備需對材料加熱 160℃以上不同，冷再生機在常溫下即可作業，避免了高溫加熱產生的有害氣體排放，也不受冬季低溫影響（只要地面不結冰，均可施工）。這一特點讓濟南的道路養護工程能突破季節限制，在春秋季黃金施工期外，冬季也可進行小規模病害修復，避免病害因拖延而擴大。同時，常溫作業減少了對周邊環境的熱污染和噪音干擾，適合學校、醫院周邊等對施工環境要求高的區域。

　　The low-temperature operation characteristics have extended the construction window period. Unlike hot regeneration equipment that requires heating materials to above 160 ℃, cold regeneration machines can operate at room temperature, avoiding harmful gas emissions from high-temperature heating and not affected by low winter temperatures (as long as the ground is not frozen, construction can be carried out). This feature allows road maintenance projects in Jinan to break through seasonal limitations. In addition to the golden construction period in spring and autumn, small-scale disease repairs can also be carried out in winter to avoid the expansion of diseases due to delays. At the same time, working at room temperature reduces thermal pollution and noise interference to the surrounding environment, making it suitable for areas with high construction environment requirements such as schools and hospitals.

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