公路养护降本关键，冷再生机租赁凭这3点，省30%成本还

　　The key to cost reduction in highway maintenance lies in the leasing of cold recycling machines, which can save 30% of costs and promote environmental protection

　　随着我国公路里程持续增加，大批老旧公路进入大修养护阶段，沥青路面翻浆、龟裂、坑槽、车辙等病害频发，若养护不及时，将严重影响通行与公路使用寿命。据行业数据显示，我国每年公路养护工程量超12万，传统养护工艺不仅施工周期长、环境污染大，且成本居高不下，而冷再生技术凭借成本低、效率高、性强的优势，已成为公路养护的主流选择。对施工单位而言，冷再生机租赁无需承担设备购置的巨额成本，适配各类公路养护场景，成为降本增效的核心抓手。今天，结合河北3.9km公路养护工程实例，详解冷再生机租赁的核心优势、适配场景及施工工艺要点，为公路施工单位提供实用参考。

　　With the continuous increase in the mileage of our country's highways, a large number of old roads have entered the stage of major repairs and maintenance. Asphalt pavement diseases such as overturning, cracking, potholes, and ruts occur frequently. If maintenance is not carried out in a timely manner, it will seriously affect traffic safety and the service life of highways. According to industry data, the annual amount of highway maintenance projects in China exceeds 120000 kilometers. Traditional maintenance techniques not only have long construction periods and high environmental pollution, but also have high costs. Cold recycling technology, with its advantages of low cost, high efficiency, and strong environmental protection, has become the mainstream choice for highway maintenance. For construction units, leasing cold recycling machines does not require bearing the huge cost of equipment procurement, and is suitable for various highway maintenance scenarios, becoming the core lever for cost reduction and efficiency improvement. Today, based on the example of the 3.9km highway maintenance project in Hebei, we will explain in detail the core advantages, adaptation scenarios, and construction process points of cold recycling machine leasing, providing practical reference for highway construction units.

　　河北某公路工程，路线全长3.9km，因车流量激增，路面破损严重，出现多种典型病害，经钻芯取样分析，路面与路基破坏严重，小修无法达到预期效果。在方案比选中，施工单位放弃传统摊铺、热再生两种方案，终选择冷再生技术，通过冷再生机租赁模式，完成沥青面层（6.5cm）与水泥稳定砂砾基层（15cm）的铣刨、破碎、拌和等全流程施工，终实现施工周期缩短40%、养护成本降低35%的良好效果，充分印证了冷再生机租赁的经济性与实用性。

　　A highway project in Hebei Province has a total length of 3.9km. Due to a significant increase in traffic volume, the road surface has suffered severe damage and various typical diseases have appeared. After core sampling analysis, it was found that the road surface and subgrade have been severely damaged, and minor repairs cannot achieve the expected results. In the scheme comparison, the construction unit abandoned the traditional paving and hot recycling schemes and ultimately chose cold recycling technology. Through the leasing mode of cold recycling machines, the entire process of milling, crushing, and mixing of asphalt surface layer (6.5cm) and cement stabilized gravel base layer (15cm) was completed, achieving a good effect of shortening the construction period by 40% and reducing maintenance costs by 35%. This fully confirms the economy and practicality of cold recycling machine leasing.

　　冷再生机租赁之所以成为公路养护的优选，核心在于其精准适配冷再生技术的施工需求，同时解决了施工单位“设备投入高、闲置率高”的痛点。相较于购置冷再生机（国产设备造价超千万元，进口设备更高），租赁模式无需一次性投入巨额资金，且可根据施工工期、工程量灵活调配设备，避免设备闲置造成的资源浪费，据测算，冷再生机租赁成本仅为购置成本的10%-15%，单公路养护可节省设备投入超20万元。

　　The reason why leasing cold recycling machines has become the preferred choice for highway maintenance lies in its precise adaptation to the construction needs of cold recycling technology, while solving the pain points of high equipment investment and high idle rate for construction units. Compared to purchasing a cold recycling machine (with domestic equipment costing over 10 million yuan and imported equipment costing more), the leasing model does not require a one-time investment of huge funds, and can flexibly allocate equipment according to the construction period and engineering quantity, avoiding resource waste caused by idle equipment. According to estimates, the leasing cost of a cold recycling machine is only 10% -15% of the purchase cost, and single kilometer road maintenance can save equipment investment of over 200000 yuan.

　　结合工程实例，冷再生机租赁的核心优势集中在三点，契合公路养护的核心需求。其一，降本效果显著，冷再生机可实现旧路面材料就地再生利用，旧料掺配比例可达50%以上，避免了新材料采购、运输及旧料清运的费用，相较于传统养护工艺，可降低综合成本20%-40%，河北该工程凭借冷再生机租赁，单节省养护成本近8万元。其二，施工效率高，冷再生机可一次性完成旧路面铣刨、破碎、拌和等多道工序，行走速度控制在4-10m/min，搭配租赁的摊铺机、碾压机等设备，单天可完成200-300m公路养护，较传统工艺施工效率提升60%，大幅缩短施工周期。

　　Based on engineering examples, the core advantages of leasing cold recycling machines are concentrated in three points, which perfectly meet the core needs of highway maintenance. Firstly, the cost reduction effect is significant. The cold recycling machine can achieve on-site recycling of old road materials, with a mixing ratio of over 50% for old materials, avoiding the cost of purchasing, transporting, and clearing new materials. Compared with traditional maintenance processes, it can reduce comprehensive costs by 20% -40%. With the leasing of the cold recycling machine, this project in Hebei Province has saved nearly 80000 yuan in maintenance costs per kilometer. Secondly, the construction efficiency is high. The cold recycling machine can complete multiple processes such as milling, crushing, and mixing of old road surfaces in one go, with a walking speed controlled at 4-10m/min. Combined with leased pavers, rollers, and other equipment, it can complete 200-300m of road maintenance in a single day, which is 60% more efficient than traditional construction methods and significantly shortens the construction period.

　　其三，合规，契合绿色施工要求。传统公路养护会产生大量路面废弃物，造成资源浪费与环境污染，而冷再生机租赁搭配冷再生技术，可实现旧路面材料就地再利用，减少废弃物排放90%以上，同时避免新材料开采带来的生态破坏，符合当下公路养护绿色的发展趋势，也能有效规避处罚风险。

　　Thirdly, environmental compliance and adherence to green construction requirements. Traditional highway maintenance generates a large amount of road waste, resulting in resource waste and environmental pollution. However, the leasing of cold recycling machines combined with cold recycling technology can achieve on-site reuse of old road materials, reduce waste emissions by more than 90%, and avoid ecological damage caused by new material mining. This is in line with the current trend of green and environmental protection in highway maintenance and can effectively avoid environmental penalties.

　　值得注意的是，冷再生机租赁需结合施工工艺精准选型，才能化发挥设备效能。以河北该工程为例，租赁的就地冷再生机，搭配3台洒水车、1台摊铺机、1台振动碾压机，严格按照施工流程作业：先完成配合比调试（选用2:8新旧料配比）、试验路段铺设，再进行水泥撒布、旧路面破碎与拌和，完成摊铺、碾压、接缝处理及7天养生，全程贴合冷再生施工工艺要求，确保养护质量达标。

　　It is worth noting that the leasing of cold recycling machines requires precise selection based on construction technology in order to maximize equipment efficiency. Taking the Hebei project as an example, the leased on-site cold recycling machine is equipped with 3 sprinkler trucks, 1 paver, and 1 vibrating roller. The construction process is strictly followed: first, the mix proportion is adjusted (using a 2:8 ratio of new and old materials), the test section is laid, then cement is spread, the old road surface is crushed and mixed, and finally the paving, rolling, joint treatment, and 7-day curing are completed. The entire process meets the requirements of cold recycling construction technology to ensure that the maintenance quality meets the standards.

　　当前，我国公路养护行业正朝着绿色化、化、低成本化方向发展，冷再生机租赁的市场需求持续攀升。据统计，2025年国内冷再生机租赁市场规模突破38亿元，年复合增长率达13.2%，其中公路养护领域租赁需求占比超75%。对施工单位而言，选择正规冷再生机租赁商家，可获得设备调试、技术指导等配套服务，避免因设备操作不当影响施工质量，进一步降低施工风险。

　　Currently, China's highway maintenance industry is developing towards green, efficient, and low-cost directions, and the market demand for cold recycling machine leasing continues to rise. According to statistics, the scale of the domestic cold recycling machine rental market will exceed 3.8 billion yuan in 2025, with a compound annual growth rate of 13.2%, of which the demand for leasing in the field of highway maintenance accounts for over 75%. For construction units, choosing a legitimate cold recycling machine rental merchant can provide supporting services such as equipment debugging and technical guidance, avoiding the impact of improper equipment operation on construction quality and further reducing construction risks.

　　综上，冷再生机租赁是公路养护降本增效、绿色施工的关键选择，尤其适配老旧公路大修、低等级公路养护等场景。结合工程实例来看，其不仅能大幅降低设备投入与养护成本，还能提升施工效率、减少环境污染，完全满足公路养护的实际需求。对施工单位而言，合理选用冷再生机租赁模式，结合冷再生施工工艺要点，既能确保养护质量达到预期，又能实现经济效益与效益的双重提升，在公路养护市场中抢占优势。

　　In summary, leasing cold recycling machines is a key choice for reducing costs and increasing efficiency in highway maintenance and green construction, especially suitable for scenarios such as major repairs of old highways and maintenance of low-grade highways. Based on engineering examples, it can not only significantly reduce equipment investment and maintenance costs, but also improve construction efficiency, reduce environmental pollution, and fully meet the actual needs of highway maintenance. For construction units, choosing a reasonable leasing model for cold recycling machines, combined with the key points of cold recycling construction technology, can not only ensure that the maintenance quality meets expectations, but also achieve a dual improvement of economic and environmental benefits, and seize the advantage in the highway maintenance market.

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