2.1 冷再生技術

2.1 Cold regeneration technology

采用現場冷再生技術進行施工時，需要應用功率大的路面銑刨拌和機對原瀝青路面實施銑刨、翻挖、破碎等處理，然后加入符合工程要求的骨料、水、水泥、瀝青再生劑等進行充分拌和處理，制作符合工程要求的施工材料，在現場完成攤鋪、碾壓等工序。冷再生技術具有生產成本低，設備要求不高等特點，但多用于低等級的公路施工，具體特點表現如下。

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 成本較低

2.1.1 Low cost

在實際應用中，冷再生技術所用底料是舊的鋪層材料，避免了采購和運輸大量新材料，有效減少了工程開支與造價，施工成本大幅降低。一般情況下，不同的再生層厚度會產生不同的成本，例如，隨著厚度的增加，該技術可節約更多的成本。

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 施工效率較高

2.1.2 High construction efficiency

冷再生技術所用機械設備能夠一次性實現多道復雜工序，可有效節約人力、物力，提高施工效率，縮短工期。與此同時，該技術還能使施工現場各種施工器械開展密集施工，從而減小施工對交通帶來的影響。

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 施工質量較高

2.1.3 High construction quality

冷再生技術對鋪層材料和添加劑具有較高要求，確保添加劑與混合料配比合理、再生材料性能符合要求，促使路面養護質量得到提升。

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

傳統的公路養護技術往往會對環境造成污染，路面廢棄物、施工材料與塵土會給周邊環境帶來影響。與此同時，傳統技術主要使用新材料，需要對開采大量新材料，倘若不能夠充分利用就會導致資源浪費。相比而言，冷再生技術能有效防止資源浪費，減少環境污染。

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.