On site cold regeneration of roads belongs to the category of road maintenance and renovation, which mainly solves the problem of damage to the base layer of asphalt pavement. Specifically, road cold recycling refers to making full use of the old paving materials (surface course and base course) of existing asphalt roads, adding some new aggregates when necessary, and adding a certain amount of additives (cement, foam asphalt, emulsified asphalt, lime, fly ash, etc.) in proportion to continuously complete the milling, crushing, mixing, paving and compaction of materials in situ at natural ambient temperature, The process of constructing a new base with the required performance and quality

（1）設(shè)計施工規(guī)范與驗收評定標準

(1) Design and construction specifications and acceptance evaluation standards

鑒于瀝青路面再生具有顯著的經(jīng)濟效益和社會環(huán)境效益，應(yīng)該廣泛應(yīng)用，同時，隨著我國高等級瀝青路面增多，今后必將面臨更多的舊路面再生利用的問題。因此，怎樣現(xiàn)有研究成果的基礎(chǔ)上有組織地再對該項技術(shù)進行的、系統(tǒng)的整理加工，并進行必要的試驗驗證，使該項技術(shù)達到規(guī)范和標準化，用以指導(dǎo)的道路養(yǎng)護工程建設(shè)項目，是擺在我們面前的一項重要任務(wù)。

Given the significant economic and social environmental benefits of asphalt pavement recycling, it should be widely applied. At the same time, with the increase of high-grade asphalt pavement in China, there will inevitably be more problems with the recycling and utilization of old pavement in the future. Therefore, how to organize and process the technology comprehensively and systematically on the basis of existing research results, and conduct necessary experimental verification to achieve standardization and standardization of the technology, in order to guide national road maintenance engineering construction projects, is an important task before us.

（2）再生劑的規(guī)格化與系列化

(2) Standardization and serialization of regenerants

國外再生劑在都是化工部門研究提供的，我國石油部門目前尚未能顧及。由于過去我國公路大部分瀝青路面結(jié)構(gòu)厚度較薄，一般不用再利用，所以對再生劑總的需求量不大。然而，隨著我國公路建設(shè)的發(fā)展，今后瀝青路面再生利用作為公路的一項日常應(yīng)用技術(shù)，對再生劑的需求量必將大大增加，為此，擴大再生劑的料源和品種，使之規(guī)格化、系列化、將是石化部門和公路部門的共同研究課題。

Regenerative agents are provided by the chemical industry sector in foreign countries, but the petroleum sector in China has not yet taken them into account. Due to the thin thickness of most asphalt pavement structures on highways in China in the past, they were generally not reused, so the total demand for recycled agents was not significant. However, with the development of highway construction in China, the recycling and utilization of asphalt pavement, as a daily application technology for highways, will greatly increase the demand for recycling agents. Therefore, expanding the sources and varieties of recycling agents to standardize and serialize them will be a joint research topic for the petrochemical and highway departments.

（3）舊瀝青再生效果的檢測

(3) Detection of the regeneration effect of old asphalt

舊料在熱態(tài)下，舊瀝青呈熔融狀態(tài)，能夠與液態(tài)的新瀝青交融混和而成。然而，這僅是一種理論推測，實際交隔混和的情況到底如何，并無法得知。雖然以再生混合料的物理力學性能試驗可間接分析再生效果的優(yōu)劣，但仍不是一種直觀的檢測方法。為此，必須研究方便而快速的檢測方法。

In the hot state, the old asphalt is in a molten state and can be mixed with new asphalt in liquid form. However, this is only a theoretical speculation, and it is not known what the actual situation of interspecific mixing is. Although the physical and mechanical performance test of recycled mixtures can indirectly analyze the advantages and disadvantages of regeneration effects, it is still not an intuitive detection method. Therefore, it is necessary to study convenient and fast detection methods.

（4）再生機械

(4) Regenerative machinery

鋪筑再生瀝青路面，工序多，工藝復(fù)雜，既要增加用工，又相當麻煩，以致使有些人望而卻步。因此，如何提高施工機械化水平，減輕手工勞動，是瀝青路面再生技術(shù)能否大面積推廣的關(guān)鍵。大面積鋪筑再生瀝青路面，迫切需要路面翻挖機械，舊料破碎、篩分機械，混合料拌和機械等。既要有適于集中廠拌的大型機械，又要有適于養(yǎng)路部門使用的各種小型機具。積極組織力量，制訂計劃，切實抓好各種再生機械的研制和生產(chǎn)，是刻不容緩。

Paving recycled asphalt pavement involves multiple processes and complex processes, which not only requires additional labor but also is quite troublesome, causing some people to hesitate. Therefore, how to improve the level of construction mechanization and reduce manual labor is the key to the large-scale promotion of asphalt pavement regeneration technology. The large-scale construction of recycled asphalt pavement urgently requires road excavation machinery, old material crushing and screening machinery, and mixture mixing machinery. There should be both large machinery suitable for centralized plant mixing and various small machinery suitable for use by road maintenance departments. It is urgent to actively organize forces, formulate plans, and effectively carry out the research and production of various regenerative machinery.

采用瀝青再生技術(shù)，可以充分利用舊料，通過選擇適當?shù)呐浔燃靶屡f料的摻和比例，可以再生得到質(zhì)量相當不錯的再生混和料。初步的研究和實踐均表明，這種再生混合料可以使用于高等級公路的瀝青面層。同時，利用瀝青再生技術(shù)可以取得相當可觀的經(jīng)濟效益和的社會效益。

By using asphalt regeneration technology, old materials can be fully utilized. By selecting appropriate proportions and blending ratios of new and old materials, high-quality recycled mixtures can be obtained through regeneration. Preliminary research and practice have shown that this recycled mixture can be used for asphalt pavement on high-grade highways. Meanwhile, utilizing asphalt regeneration technology can achieve considerable economic and social benefits.

（5）瀝青添加劑特性及其混合料路用性能研究

(5) Research on the Characteristics of Asphalt Additives and the Road Performance of Their Mixtures

針對瀝青路面在使用過程中出現(xiàn)的諸多病害，人們進行了大量的研究，并指出摻入瀝青添加劑可明顯改善瀝青路面的使用性能；除了常用的樹脂類、橡膠類和共聚物類瀝青改性劑外，近年來國際上又出現(xiàn)了一些新型添加劑。

A lot of research has been conducted on the various diseases that occur in the use of asphalt pavement, and it has been pointed out that adding asphalt additives can significantly improve the performance of asphalt pavement; In addition to commonly used resin, rubber, and copolymer asphalt modifiers, some new additives have emerged internationally in recent years.

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