Blower motor The cold recycling of asphalt concrete is a method
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Blower motor The cold recycling of asphalt concrete is a method of recycling asphalt that has been available for decades. An innovative application of this technique involves the construction of a small temporary plant site and disposal, reprocessing and transmit the asphalt all in one place. This technique is known as the Cold Central Plant Recycling.

However, sometimes the plant is constructed near the site if the area to be paved will not support a plant. This option consists of trucks to and from the site, with the associated environmental impact and cost. The more specific technical name for cold recycling facilities refers to the situation where a plant can be built on site. This article lists the benefits of cold recycling facilities over other traditional paving options.

Significantly reduces costs

1. Experience has shown that the cost of Cold On-Site Recycling is less expensive than conventional paving methods.

2. To begin with, all or most of the material needed is in place, so that the total cost of the new asphalt is quite less. Often, the only new purchase necessary equipment is the layer of hot mix asphalt.

3. Because the material is recycled in place, much less number of sets of trucks required.

4. No dump fees for recycling asphalt concrete.

5. Labor costs are reduced significantly due to the short duration of the project.

In August 2008 Cold On- Site Recycling was used to repave a portion of the Vintage Trade Fair in Modesto, CA. The estimated cost to pave this mall using traditional milling and paving was $ 1.8 million. He took the job in using cold recycling facilities was $ 1.2 million, for a real cost savings $ 600,000.

SHORTER DOWNTIME POTENTIALLY

The process of in situ cold recycling removes only the top 2-4 inches of asphalt concrete. Remove and replace traditional methods take not only the asphalt, but the rock and, potentially, some of the layers of soil and replaced. Because this is not necessary, in the course of the sub grade is in good condition, do not need to take the time (and spend money) to replace the rock and prepare the soil, resulting in shorter stop. Another advantage that both cold facilities and methods Plant Central - cold recycling is that if there are problems of sub -base asphalt pavement can still be removed and stored on site. Then, the failed base section areas can be repaired before recycling asphalt concrete placement recovered.

As durable as TRADITIONAL METHODS SURFACING

motor for elevator One concern often raised with recycling is the quality of the recycled product, cold asphalt recycling has different properties "virgin" hot mix. On a structural basis, CALTRANS Cold Recycled Asphalt assigned a ' Gravel Equivalency Factor ' 1.7, while for most Hot Mix Asphalt ( " HMA " ) gravel Factor is 2.0 . Often in the field this results in a slightly thicker section when using cold recycled asphalt. For example , if the design requires 4 "section of CA and the owner wants to replace cold recycling by section , asphalt then make a normal change is 3 " of asphalt cold recycling on - set by 1.5 ' HMA . Outcome 4.5" section is structurally equivalent to 4 " HMA. But, because the processing of asphalt cold recycling has a different internal structure and the new section is a two-layer system, the pavement is more resistant to thermal and reflective cracking.





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تاریخ انتشار : جمعه 14 ارديبهشت 1397 | نظرات ()
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