高速公路上的冷再生是一種新型的道路施工工藝。瀝青路面冷再生是利用舊面層和部分基層來改建成新的基層（或底基層）。這種工藝稱為舊瀝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，是在原有舊路鋪層的基礎上，按照新的設計要求，摻入適量的骨料，水泥、石灰、粉煤灰、和水等外加材料，利用就地冷再生機，在自然常溫下，就地連續(xù)完成對舊鋪層（路面和部分基層）的銑刨、破碎、添加料、拌和、攤鋪等工序，隨后進行找平和碾壓，修建出一種特殊級配的道路基層（或底基層）。

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).

此外冷生材料級配以及冷再生材料成形對于高速公路上的養(yǎng)護起到了很大的作用，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:

冷再生機出租廠家經(jīng)過調(diào)查得知，國內(nèi)研究中常見的路面級配是水泥冷再生材料一般選用《公路路面基層施工技術規(guī)范》中的級配范圍；瀝青（+水泥）穩(wěn)定類材料篇采用路面設計規(guī)范中的AC13或AC20級配范圍，也有采用再生規(guī)范中的級配范圍。其他曾經(jīng)使用的級配有：維特根手冊中的級配范圍、ARRA法中的級配范圍、貝雷法控制級配，也有研究者自行設計級配。

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.

冷再生材料的性質(zhì)與傳統(tǒng)道路材料不完全相同，因而對成形的要求也不完全相同。冷再生材料按再生劑大致可以區(qū)分為兩類：無機再生劑和瀝青再生劑，瀝青再生時往往加入少量水泥以提高其抗水損壞能力。常用的無機再生劑是水泥，其他還有二灰、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.

無機穩(wěn)定冷再生一般按照傳統(tǒng)的半剛性材料進行成形和養(yǎng)生。常溫下進行重型擊實試驗或者振動擊實試驗，在20℃或者25℃下養(yǎng)生7天。通過含水量-強度關系確定佳含水量。瀝青穩(wěn)定劑冷再生時的情況比較復雜，尚無統(tǒng)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.

冷再生材料組成設計方法常見的方法是用擊實法確定佳液體量，用馬歇爾穩(wěn)定度、干劈裂強度、濕劈裂強度中的一個或幾個達到優(yōu)來確定瀝青用量。

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.

本公司是一家從事冷再生機租賃、冷再生施工等的公司，公司主要服務于道路施工企業(yè),提供工程承包,機械設備租賃,路面養(yǎng)護施工咨詢，積累了豐富的施工經(jīng)驗，施工技術成熟。您有需求可以來關注我們www.wlc189.com進行咨詢或者購買服務。

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.