The renovation of old roads is the primary part of road maintenance. There are two kinds of regeneration methods for old roads, i.e. hot and cold recycling system regeneration. There are actually four kinds as follows: CIR, cold plant mix regeneration, in situ geothermal regeneration and hot plant mix regeneration. Among them, the reconstruction of rural grass-roots surface structure is not expected to be very good, and no in-situ cold recycling technology is available, which can complete the local conversion.

不但能够降低材料的浪费，及其减少物流成本。另外它不容易危害一切正常的总流量。不毁坏路面道路绿化和植物群落，它是优选的道路养护施工人员。但它的缺陷是有关机器设备是昂贵的，而且该材料匀称组成物的设计方案差别会导致艰难。

It can not only reduce the waste of materials, but also reduce the logistics cost. In addition, it is not easy to harm all normal total flow. It does not damage the road greening and plant community, and is the preferred road maintenance construction personnel. But its defect is that the relevant machinery and equipment are expensive, and the design differences of the symmetrical components of the material will lead to difficulties.

为底座上的道路冷再生搅拌机械，及其一个下一层，维护保养二级公路的表面层。此项技术的优势是过程管理，该技术是完善的，缺陷是，以便完成在遮盖表面的一定薄厚需要的技术。

For the base of the road cold recycling mixing machine, and its next layer, maintenance of the surface layer of the secondary road. The advantage of this technology is process management, the technology is perfect, the defect is, in order to complete the covering surface of a certain thickness of the required technology.

本地热再生技术合适于防止肌肤再生和维护，并以这类方法的材料，还可以灵活运用，物流成本低,但其高些的机器设备成本费，医不好的构造的病症;热拌厂适用再生聚集再生，材料成份设计方案严苛的方法，也是有优良的技术适用，但很大的机器设备及有关化学物质转换成本费.

Local thermal regeneration technology is suitable for preventing skin regeneration and maintenance. Materials in this way can also be used flexibly with low logistics cost, but it has higher cost of machinery and equipment and can not cure the structural diseases; The hot mix plant is suitable for recycling, gathering and recycling. The design scheme of material composition is strict, and it also has excellent technology application, but it has a large cost of machinery, equipment and related chemical substance conversion