2.1 冷再生技术

2.1 Cold regeneration technology

采用现场冷再生技术进行施工时，需要应用功率大的路面铣刨拌和机对原沥青路面实施铣刨、翻挖、破碎等处理，然后加入符合工程要求的骨料、水、水泥、沥青再生剂等进行充分拌和处理，制作符合工程要求的施工材料，在现场完成摊铺、碾压等工序。冷再生技术具有生产成本低，设备要求不高等特点，但多用于低等级的公路施工，具体特点表现如下。

When using on-site cold recycling technology for construction, it is necessary to use a high-power pavement milling and mixing machine to carry out milling, excavation, crushing and other treatments on the original asphalt pavement, and then add aggregates, water, cement, asphalt rejuvenators, etc. that meet the engineering requirements for sufficient mixing treatment to prepare construction materials that meet the engineering requirements. The paving, rolling and other processes are completed on site. Cold regeneration technology has the characteristics of low production cost and low equipment requirements, but it is mostly used for low-grade highway construction. The specific characteristics are as follows.

2.1.1 成本较低

2.1.1 Low cost

在实际应用中，冷再生技术所用底料是旧的铺层材料，避免了采购和运输大量新材料，有效减少了工程开支与造价，施工成本大幅降低。一般情况下，不同的再生层厚度会产生不同的成本，例如，随着厚度的增加，该技术可节约更多的成本。

In practical applications, the bottom material used in cold recycling technology is old laying materials, which avoids the procurement and transportation of a large amount of new materials, effectively reduces engineering expenses and costs, and significantly reduces construction costs. In general, different thicknesses of regeneration layers will result in different costs. For example, as the thickness increases, this technology can save more costs.

2.1.2 施工效率较高

2.1.2 High construction efficiency

冷再生技术所用机械设备能够一次性实现多道复杂工序，可有效节约人力、物力，提高施工效率，缩短工期。与此同时，该技术还能使施工现场各种施工器械开展密集施工，从而减小施工对交通带来的影响。

The mechanical equipment used in cold regeneration technology can achieve multiple complex processes at once, which can effectively save manpower and material resources, improve construction efficiency, and shorten the construction period. At the same time, this technology can also enable various construction equipment on the construction site to carry out intensive construction, thereby reducing the impact of construction on traffic.

2.1.3 施工质量较高

2.1.3 High construction quality

冷再生技术对铺层材料和添加剂具有较高要求，确保添加剂与混合料配比合理、再生材料性能符合要求，促使路面养护质量得到提升。

Cold recycling technology has high requirements for paving materials and additives, ensuring a reasonable ratio of additives and mixtures, and meeting the performance requirements of recycled materials, promoting the improvement of road maintenance quality.

2.1.4 污染小

2.1.4 Low pollution

传统的公路养护技术往往会对环境造成污染，路面废弃物、施工材料与尘土会给周边环境带来影响。与此同时，传统技术主要使用新材料，需要对开采大量新材料，倘若不能够充分利用就会导致资源浪费。相比而言，冷再生技术能有效防止资源浪费，减少环境污染。

Traditional highway maintenance techniques often cause environmental pollution, and road waste, construction materials, and dust can have an impact on the surrounding environment. At the same time, traditional technology mainly uses new materials and requires the extraction of a large amount of new materials. If not fully utilized, it will lead to resource waste. By comparison, cold regeneration technology can effectively prevent resource waste and reduce environmental pollution.