行业资讯
冷再生机出租浅谈冷再生机在公路养护中作用！
来源：https://www.sddhfjx.com/ 日期：2020-08-13
在对道路进行养护工作时，我们需要对原先的道路进行调查，以确保在使用冷再生机进行道路养护工作的顺利进行。下面冷再生机出租就带大家一起来看一下吧。
In the road maintenance work, we need to investigate the original road, in order to ensure that the use of cold recycling machine road maintenance work smoothly. Let's take you to have a look at it.
1、旧路调查
1. Old road survey
冷再生技术适用于大部分沥青混凝土旧路大修与改建工程。先需要对旧路进行详细的调查，主要包括以下内容:
Cold recycling technology is suitable for most of the old asphalt concrete road repair and reconstruction projects. First of all, a detailed investigation of the old road is needed, mainly including the following contents:
1、对旧路结构和历年修补改造情况进行调查，了解路面病害情况，包括变形、裂缝、边缘破坏等。
1. To investigate the old road structure and repair and reconstruction over the years to understand the pavement diseases, including deformation, cracks, edge damage, etc.
2、对旧路进行弯沉检测，以分析旧路的破坏状况和承载能力，确定重复利用旧路基层进行冷再生的必要性。
2. In order to analyze the damage condition and bearing capacity of the old road by deflection detection, the necessity of cold recycling of old road base is determined.
3、对旧路结构层进行钻芯取样，以确定旧路结构层的厚度及各层材料的工程特性。
3. In order to determine the thickness of the old road structure layer and the engineering characteristics of each layer material, core drilling and sampling are carried out for the old road structure layer.
2、材料组成设计
2. Material composition design
通过试验分析，我们认为冷再生层的性能与混合料级配有着显著而密切的关系。如若旧料中4.75mm以上的粒料含量过低(<40%)，则需加入部分级配的新骨料；若旧料中4.75mm 以上的粒料含量过高(>80%)，则会导致细料(特别是<0.6mm 的集料)对空隙的填充不足，混合料强度偏低，则需在冷再生混合料中加入部分级配的细集料，以便形成具有良好级配的骨架密实结构，提高混合料的强度。但这无疑都会提高冷再生结构层的造价，需与新建的结构层进行经济比较以后再实施。
Through the test and analysis, we think that the performance of cold recycled layer has a significant and close relationship with the gradation of mixture. If the content of particles above 4.75mm in old materials is too low (< 40%), it is necessary to add new aggregates with partial gradation; if the content of particles above 4.75mm in old materials is too high (> 80%), it will lead to fine materials (especially < 0.6mm) In order to form a well graded skeleton dense structure and improve the strength of the mixture, it is necessary to add some graded fine aggregate into the cold recycled mixture due to insufficient filling of voids and low strength of the mixture. But this will undoubtedly increase the cost of cold regeneration structure layer, which needs to be compared with the new structure layer before implementation.
以上是有关冷再生机在公路养护中的作用，感谢您的阅读，希望对您有所帮助，如您想要了解更多内容欢迎点击我们的http://www.sddhfjx.com官网首页。
The above is about the role of cold recycling machine in highway maintenance, thank you for your reading, hope to help you, if you want to know more, welcome to click our http://www.sddhfjx.com Home page of the official website.
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