The increase in domestic engineering has gradually promoted the development of construction engineering machinery.

Asphalt pavement Cold recycler machine technology is not a single technology, but a general term for a class of technologies. Classifications vary from country to country. China's "Asphalt Pavement Recycling Technical Specifications" (JTG F41-2008) divides the asphalt pavement Road cold recycler machine technology into four categories, namely plant-mixed hot regeneration, in-situ thermal regeneration, plant-mixed cold regeneration, and in-situ cold regeneration.

In-situ Road cold recycler refers to the use of special in-situ Road cold recycler equipment, which mixes a certain amount of new aggregates, recycled binders, active fillers (cement, lime, etc.), water and other materials into asphalt pavement, then performs on-site milling, The process of crushing, mixing, shaping, paving, rolling, etc., realizes the technology of Road cold recycler of old asphalt pavement. It includes two ways of Road cold recycler of asphalt layer in situ and full-depth Road cold recycler of situ. The in-situ regeneration of the asphalt material layer only is called the in-situ cold regeneration of the asphalt layer: the regeneration layer includes both the asphalt material layer and the non-asphalt material layer, which is called full-depth in-situ cold regeneration.

 Asphalt pavement in-situ Cold recycler is not what people usually understand is to restore the damaged asphalt pavement to its original state, but to change the old surface layer and part of the base layer into a new base layer or subbase layer on the spot. This technology enables full reuse of old asphalt pavement materials.

From the perspective of current engineering practice, the in-situ cold-recycler technology for asphalt pavement has obvious advantages in road regeneration, and the specific performance is as follows.

(1) Save material and transportation costs. Compared with other traditional construction methods, the total investment can be saved by 20% -50%.

(2) Do not interrupt traffic. Because the cold-in-place regeneration process is simple and insensitive to traffic disturbances, it can be opened to traffic and construction in half the traffic volume.

(3) As there is no need to transport and crush the old materials, the construction period is greatly shortened.

(4) Road cold recycler the environment and saves resources. Because all the old materials can be used in situ, the mining of new materials is reduced, and the problems of old material transportation and waste disposal do not exist, which not only saves investment but also has environmental protection significance.