冷再生技术适用于大部分旧沥青混凝土道路大修改造工程，我们需要对旧路进行详细调查，主要包括以下内容：

Cold recycling technology is applicable to most of the old asphalt concrete road overhaul and reconstruction projects. We need to conduct a detailed investigation of the old road, mainly including the following:

（1）多年来对旧路结构进行调查和修复改造，了解路面病害，包括变形、裂缝、边缘损坏等。

(1) Over the years, the old road structure has been investigated, repaired and reconstructed to understand the pavement diseases, including deformation, cracks, edge damage, etc.

（2）对旧路进行挠度检测，分析旧路的破坏情况和承载力，确定旧路基层冷再生的必要性。

(2) The deflection of the old road is tested, the damage and bearing capacity of the old road are analyzed, and the necessity of cold regeneration of the old road base is determined.

（3）钻芯确定旧路结构层的厚度和材料的工程特性。

(3) Drill the core to determine the thickness of the structural layer of the old road and the engineering characteristics of the material.

尽管现场冷再生的应用范围受到路面标高的限制，但与传统的施工方法相比，在大多数普通道路改造中仍具有许多优点，冷再生机出租厂家介绍如下：

Although the application scope of on-site cold recycling is limited by the road surface elevation, compared with the traditional construction method, it still has many advantages in most ordinary road reconstruction. The cold recycling machine rental manufacturer is as follows:

（1）国外一些成本较低的建筑材料表明，与传统的施工方法相比，再生层厚度不同，成本可降低20%~46%，因为可以充分利用旧路料。厚度越深，成本降低越多。根据我省该施工方法定额测算结果，确定该技术可降低工程造价。

(1) Some foreign building materials with low cost show that compared with traditional construction methods, the thickness of recycled layer is different, and the cost can be reduced by 20%~46%, because the old road materials can be fully utilized. The deeper the thickness, the lower the cost. According to the calculation results of the construction method quota in our province, it is determined that this technology can reduce the project cost.

（2）由于旧路面材料全部在当地使用，工序简单，省去了6家工厂的开挖、运输、加工、回填等一系列工作，大大简化了施工工序。

(2) As the old pavement materials are all used locally, the process is simple, which saves a series of work such as excavation, transportation, processing and backfilling in six factories, greatly simplifying the construction process.

（3）保护环境和资源，因为旧材料可以就地充分利用，减少新材料的开采，不存在旧材料运输和随意处置废物的问题。施工过程中无粉尘和废气污染，节约资源，保护环境。因此，有人称之为“绿色”建筑技术。

(3) Protect the environment and resources, because old materials can be fully used on the spot, reduce the exploitation of new materials, and there is no problem of old materials transportation and waste disposal at will. There is no dust and waste gas pollution during the construction process, saving resources and protecting the environment. Therefore, some people call it "green" building technology.

（4）由于现场冷再生机工艺简单，施工设备很少，交通施工可以不间断进行。它对交通干扰反应不敏感。

(4) Due to the simple process of the on-site cold regenerator and the few construction equipment, the traffic construction can be carried out without interruption. It is insensitive to traffic interference.

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