冷再生機(jī)是道路養(yǎng)護(hù)與改造工程中的關(guān)鍵設(shè)備，通過(guò)對(duì)舊路面材料的現(xiàn)場(chǎng)再生利用，實(shí)現(xiàn)路面結(jié)構(gòu)的修復(fù)與升級(jí)，因其環(huán)保出色的特點(diǎn)，在城鄉(xiāng)道路維護(hù)中應(yīng)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(jī)承擔(dān)著核心的破碎與拌和任務(wù)。當(dāng)瀝青路面出現(xiàn)龜裂、沉陷或車轍等病害時(shí)，無(wú)需將舊路面材料全部清運(yùn)出場(chǎng)，冷再生機(jī)可直接對(duì)路面進(jìn)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(shí)，設(shè)備自帶的噴灑系統(tǒng)會(huì)按比例添加再生劑（如乳化瀝青、水泥或石灰），通過(guò)銑刨轉(zhuǎn)子的高速攪拌，使舊料與新添加的結(jié)合料充分混合，形成符合強(qiáng)度要求的再生混合料。這一過(guò)程能保留 80% 以上的舊路面材料，大幅減少建筑垃圾外運(yùn)量，尤其適合濟(jì)南那些周邊場(chǎng)地有限、運(yùn)輸不便的城區(qū)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(jī)可直接在現(xiàn)場(chǎng)完成基層與面層的再生施工，簡(jiǎn)化傳統(tǒng)修路流程。對(duì)于基層破損的道路，設(shè)備先對(duì)原基層進(jìn)行深度破碎（通常達(dá) 15-30 厘米），摻入水泥等穩(wěn)定劑后拌和均勻，經(jīng)突出后形成新的基層結(jié)構(gòu)；隨后在其上再生瀝青面層，實(shí)現(xiàn) “一次施工、兩層成型”，比傳統(tǒng) “開挖 - 清運(yùn) - 回填” 工藝縮短 50% 以上工期。在鄉(xiāng)村道路升級(jí)改造中，冷再生機(jī)可將原水泥路面破碎后，添加乳化瀝青再生劑，拌和后突出成瀝青基層，既解決了水泥路面接縫多、易碎裂的問(wèn)題，又降低了新材料采購(gòu)成本，每公里可節(jié)省材料費(fèi)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(yīng)多種路面類型，靈活應(yīng)對(duì)不同修復(fù)需求。在瀝青路面養(yǎng)護(hù)中，冷再生機(jī)能針對(duì)性處理表層病害，通過(guò)添加再生劑恢復(fù)舊瀝青的黏結(jié)性能，使再生混合料的馬歇爾穩(wěn)定度達(dá)到 8kN 以上，滿足路面承載要求。對(duì)于水泥穩(wěn)定碎石基層，可摻入 3%-5% 的水泥作為再生結(jié)合料，拌和后形成的基層 7 天無(wú)側(cè)限抗壓強(qiáng)度能達(dá)到 3-5MPa，適合中等交通量道路使用。甚至在砂石路面升級(jí)為硬化路面時(shí)，冷再生機(jī)可將原有砂石材料與水泥拌和，直接突出成型，減少砂石料外運(yùn)與新料進(jìn)場(chǎng)，適應(yīng)鄉(xiāng)村地區(qū)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(yè)特性拓展了施工窗口期。與熱再生設(shè)備需對(duì)材料加熱至 160℃以上不同，冷再生機(jī)在常溫下即可作業(yè)，避免了高溫加熱產(chǎn)生的有害氣體排放，也不受冬季低溫影響（只要地面不結(jié)冰，均可施工）。這一特點(diǎn)讓濟(jì)南的道路養(yǎng)護(hù)工程能突破季節(jié)限制，在春秋季黃金施工期外，冬季也可進(jìn)行小規(guī)模病害修復(fù)，避免病害因拖延而擴(kuò)大。同時(shí)，常溫作業(yè)減少了對(duì)周邊環(huán)境的熱污染和噪音干擾，適合學(xué)校、醫(yī)院周邊等對(duì)施工環(huán)境要求高的區(qū)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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