Road cold recycler technology and construction technology

What is in-situ Road cold recycler technology

Asphalt pavement regeneration technology can be divided into: plant-mixed hot regeneration, in-situ thermal regeneration, plant-mixed cold regeneration, and in-situ cold regeneration.

In-situ cold regeneration refers to the use of special in-situ cold regeneration equipment, which mixes a certain amount of new aggregates, recycled binders, active fillers (cement, lime, etc.), water, etc. into the asphalt pavement and then performs on-site milling and crushing , Mixing, shaping, paving, rolling and other processes to achieve the technology of recycling old asphalt pavement.

 

Second, in-situ Cold recycler machine construction technology

1. Investigate the condition of the old road structure and pave the test road to determine the process parameters such as the depth to be regenerated and the amount of new aggregate added. The length should not be less than 200 meters.

2. Before the Road cold recycler construction, the old road surface should be cleaned, and the obvious subsidence and pits of the old road should be filled.

3. Add additives (cement, lime, new aggregate, etc.) manually or mechanically, and calculate the added amount per square meter according to the designed added amount.

4, Road cold recycler machine for operation. During the construction process, the depth and speed should be checked at any time to ensure that the regeneration depth and the broken gradation of the mixture are reasonable.

5. Use the bulldozer to initially level and evenly discharge pressure, and then use the grader to scrape to the design elevation.

6. Detect the water content, replenish water if necessary to make it meet the optimal water content, and then roll the road to form a new road base.

7, road grassroots health. The health period is not less than 7 days, and traffic control is performed during the health period.

8. Paving surface course, compacting to form new pavement.

   Cold recycler Cement pavement crushing has 6 advantages compared to traditional construction methods

  (1) Low cost (2) Improve the old road grade (3) Do not damage the roadbed

  (4) No interruption of traffic (5) Short construction period (6) Protection of environment and resources

 

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