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旧沥青路面冷再生机械如何进行施工?

来源:http://www.tclqgc.com/ 日期:2024-04-09 发布人:

根据原有道路结构和新设计方案的不同, 就地冷再生可以组合出多种施工方案!其实各种施工方案的工作原理都是一样, 区别只是掺入材料的不同而加入的方法也有所不同而已!

According to the difference between the original road structure and the new design scheme, on-site cold regeneration can combine multiple construction schemes! In fact, the working principle of various construction plans is the same, and the only difference is that the materials added are different, and the methods used are also different!

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在利用水泥进行就地冷再生时,外加料主要是水泥,水泥的通常用量按重量计在2%-5%之间比较合适。如果水泥的用量过多,容易使再生层变脆。为了获得良好的压实效果,同时还要加入适量的水。水泥的加入方法有两种!一种是利用人工或专用机械将水泥预先撒布在需要再生的路面上。这时水的加入方法,是通过再生机上所配备的微机控制系统从跟班作业的运水车内输送到再生机的拌和仓中,另一种方法是采用水泥稀浆搅拌输送车,将需要添加的水泥和水搅拌成水泥稀浆,再通过再生机上的控制系统将其输送到再生机的拌和仓中。

When using cement for on-site cold regeneration, the main additive is cement, and the usual dosage of cement is between 2% and 5% by weight, which is more suitable. If the amount of cement used is too much, it is easy to make the recycled layer brittle. In order to achieve a good compaction effect, an appropriate amount of water should also be added. There are two ways to add cement! One method is to use manual or specialized machinery to pre distribute cement on the road surface that needs to be recycled. The method of adding water at this time is to transport it from the accompanying water transport truck to the mixing bin of the regeneration machine through the microcomputer control system equipped on the regeneration machine. Another method is to use a cement slurry mixing truck to mix the cement and water that needs to be added into cement slurry, and then transport it to the mixing bin of the regeneration machine through the control system on the regeneration machine.

上述两种加入方法各有利弊,预撒水泥法工艺简单, 但在施工过程中容易产生灰尘,不过这种方法有一个很大的优点,就是在控制用量方面非常方便。因为在施工中“ 再生机要分几个工作行程才能完成一个作业段内整幅路面的铣刨,而再生层的终碾压要等到整个作业段全部施工工序完成之后才能进行,这就形成先铣刨的路面和后铣刨的路面到终碾压时所等待的时间间隔相差很多,在较热或较干燥的气候里,随着时间的拖延,先铣刨的路面水分蒸发得较多,而后铣刨的路面水分蒸发得较少。

The above two methods of adding each have their own advantages and disadvantages. The pre spreading cement method has a simple process, but it is prone to generating dust during the construction process. However, this method has a great advantage, which is that it is very convenient in controlling the dosage. Because in construction, the regeneration machine needs to divide into several working journeys to complete the milling and planing of the entire road surface within a working section, and the final compaction of the regeneration layer can only be carried out after the entire construction process of the working section is completed. This results in a significant difference in the waiting time interval between the milling and planing road surfaces. In hot or dry climates, as time goes on, the moisture on the milling road surface evaporates more, while the moisture on the milling road surface evaporates less.

如果预先加入的水量相同,则在终碾压时,道路各个部位的含水量就不同。解决这一矛盾的办法, 就是调整先后施工顺序中的加水量。凭着施工经验,先施工的多加水,后施工的少加水。因为预撒水泥法是灰水分开,所以在调整加水量时不会影响水泥的用量。采用水泥稀浆输入法可以施工中的粉尘污染” 减少施工污染“ 但对单独调整用水量就较困难。

If the amount of water added in advance is the same, the moisture content of each part of the road will be different during the final compaction. The only way to solve this contradiction is to adjust the amount of water added in the construction sequence. Based on construction experience, add more water first and less water later. Because the pre sprinkled cement method separates cement and water, adjusting the amount of water added will not affect the amount of cement used. The use of cement slurry input method can eliminate dust pollution during construction and reduce construction pollution, but it is more difficult to adjust the water consumption separately.

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