高速公路上的冷再生是一种新型的道路施工工艺。沥青路面冷再生是利用旧面层和部分基层来改建成新的基层（或底基层）。这种工艺称为旧沥青路面材料的就地再利用。

Cold regeneration on expressway is a new road construction technology. Cold recycling of asphalt pavement is to use the old surface course and part of the base course to rebuild into a new base course (or subbase). This process is called in-situ reuse of old asphalt pavement materials.

路面就地冷再生的工作原理，是在原有旧路铺层的基础上，按照新的设计要求，掺入适量的骨料，水泥、石灰、粉煤灰、和水等外加材料，利用就地冷再生机，在自然常温下，就地连续完成对旧铺层（路面和部分基层）的铣刨、破碎、添加料、拌和、摊铺等工序，随后进行找平和碾压，修建出一种特殊级配的道路基层（或底基层）。

The working principle of in-situ cold recycling of pavement is to add an appropriate amount of aggregate, cement, lime, fly ash, water and other additional materials on the basis of the original old pavement layer according to the new design requirements, and use the in-situ cold recycling machine to continuously complete the milling, crushing, additive, mixing, paving and other processes of the old pavement layer (pavement and part of the base course) at natural normal temperature, followed by leveling and rolling, Build a special graded road base (or subbase).

此外冷生材料级配以及冷再生材料成形对于高速公路上的养护起到了很大的作用，比如：

In addition, the grading of cold raw materials and the forming of cold recycled materials play a great role in the maintenance of highways, such as:

冷再生机出租厂家经过调查得知，国内研究中常见的路面级配是水泥冷再生材料一般选用《公路路面基层施工技术规范》中的级配范围；沥青（+水泥）稳定类材料篇采用路面设计规范中的AC13或AC20级配范围，也有采用再生规范中的级配范围。其他曾经使用的级配有：维特根手册中的级配范围、ARRA法中的级配范围、贝雷法控制级配，也有研究者自行设计级配。

According to the investigation of the rental manufacturer of the cold recycling machine, the common pavement gradation in the domestic research is the gradation range in the technical code for construction of highway pavement base course for cement cold recycling materials; For asphalt (+ cement) stabilized materials, the grading range of AC13 or ac20 in the pavement design specification is adopted, and the grading range in the recycling specification is also adopted. Other used gradings are: the grading range in wittgens manual, the grading range in arra method, the grading controlled by Beret method, and some researchers design the grading by themselves.

冷再生材料的性质与传统道路材料不完全相同，因而对成形的要求也不完全相同。冷再生材料按再生剂大致可以区分为两类：无机再生剂和沥青再生剂，沥青再生时往往加入少量水泥以提高其抗水损坏能力。常用的无机再生剂是水泥，其他还有二灰、水泥粉煤灰等。

The properties of cold recycled materials are different from those of traditional road materials, so the requirements for forming are also different. Cold recycled materials can be roughly divided into two types according to the regenerants: inorganic regenerants and asphalt regenerants. When asphalt is regenerated, a small amount of cement is often added to improve its water damage resistance. The commonly used inorganic regenerant is cement, and others include lime fly ash, cement fly ash, etc.

无机稳定冷再生一般按照传统的半刚性材料进行成形和养生。常温下进行重型击实试验或者振动击实试验，在20℃或者25℃下养生7天。通过含水量-强度关系确定佳含水量。沥青稳定剂冷再生时的情况比较复杂，尚无统一方法。

Inorganic stable cold regeneration is generally formed and cured according to traditional semi-rigid materials. Carry out heavy compaction test or vibration compaction test under normal temperature, and maintain at 20 ℃ or 25 ℃ for 7 days. The optimum moisture content is determined by the moisture content strength relationship. The situation of cold regeneration of asphalt stabilizer is complex, and there is no unified method.

冷再生材料组成设计方法常见的方法是用击实法确定佳液体量，用马歇尔稳定度、干劈裂强度、湿劈裂强度中的一个或几个达到优来确定沥青用量。

The common method for composition design of cold recycled materials is to use compaction method to determine the optimal liquid volume, and use one or more of Marshall stability, dry splitting strength and wet splitting strength to determine the asphalt content.

本公司是一家从事冷再生机租赁、冷再生施工等的公司，公司主要服务于道路施工企业,提供工程承包,机械设备租赁,路面养护施工咨询，积累了丰富的施工经验，施工技术成熟。您有需求可以来关注我们www.tclqgc.com进行咨询或者购买服务。

The company is a professional company engaged in the lease of cold recycling machines, cold recycling construction, etc. the company mainly serves road construction enterprises, provides engineering contracting, mechanical equipment leasing, and pavement maintenance construction consulting, and has accumulated rich construction experience and mature construction technology. You can follow us at www.tclqgc Com for consulting or purchasing services.