就地热再生：这种再生法就是利用沥青路面热再生联合机组来就地完成沥青路面的热再生修复。原有路面材料100％地利用，不需要搬运废料及废弃物堆放场地，可减少环境污染；能够改变个别 的混合料成分，以便给定沥青 混合料的佳配比；可以快速就地再生，并随着工程进度开放道路交通，对交通干扰小，现在国外应用很广。
On site geothermal regeneration: This regeneration method utilizes a combined unit of asphalt pavement thermal regeneration to complete on-site thermal regeneration and repair of asphalt pavement. The original road materials are 100% utilized, and there is no need to handle waste materials or waste storage sites, which can reduce environmental pollution; Being able to change individual mixture components in order to provide an optimal mix ratio for asphalt mixtures; It can quickly regenerate on site and open up road traffic with the progress of the project, with minimal traffic interference. It is now widely used abroad.
The on-site thermal regeneration of asphalt pavement refers to the 100% completion of the original asphalt pavement regeneration on site. The original asphalt pavement is first heated and softened to facilitate loosening, and then the loosened asphalt pavement is fully mixed, followed by paving and rolling.
The aging of asphalt pavement is mainly due to the reduction of lightweight components in its asphalt and a small amount of loss of stone materials. The thermal regeneration of asphalt pavement is achieved by adding regenerants to adjust the chemical components of aging asphalt in the old asphalt pavement, in order to restore the performance of aging asphalt. At the same time, a small amount of fresh asphalt mixture is added to adjust the grading of the original asphalt mixture, in order to achieve the effect of asphalt pavement regeneration.
Add new asphalt mixture and recycling agent in proportion as needed. Usually, new asphalt mixtures are controlled within 30% of the quality of recycled mixtures. The addition rate of various materials is determined based on the performance analysis of the original asphalt pavement and its laboratory mix design, and in accordance with the corresponding mixture specifications.
According to the process used, on-site thermal regeneration can be divided into three types, namely raking and shaping regeneration, re laying regeneration, and re mixing regeneration.
1. Raking and shaping regeneration: First, use heating equipment to heat and soften the asphalt pavement, and then use the equipment's own loosening device to loosen and shape the pavement. At the same time, add regeneration agent, and then use a roller to compact it.
2. Re paving and regeneration: First, use heating equipment to heat and soften the asphalt pavement, then mill the old asphalt layer. The difference is that the milled asphalt material is directly spread, and then a new layer of asphalt mixture is laid on top of it, and then compacted with a roller.
3. Re mixing and regeneration: First, use heating equipment to heat and soften the asphalt pavement, then use a milling machine to mill the old asphalt layer, and then add a certain proportion of regeneration agent before adding new materials for adjusting the mixing. After mixing, collect and discharge the mixture onto the paver for paving, and use a roller to compact it.
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