What is in situ cold regeneration and geothermal regeneration?

就地冷再生(CIR）是指采用專用的就地冷再生設(shè)備，對瀝青路面進(jìn)行現(xiàn)場冷銑刨、破碎和篩分（必要時(shí)），滲入一定數(shù)量的新集料、再生結(jié)合料、活性填料（水泥、石灰等）、水，經(jīng)過常溫拌和、攤鋪、碾壓等工序，一次性實(shí)現(xiàn)舊瀝青路面再生的技術(shù)，它包括瀝青層就地冷再生和全深式就地冷再生兩種方式。僅對瀝青材料層進(jìn)行的就地冷再生稱為瀝青層就地冷再生。瀝青層就地冷再生是一種循環(huán)利用的再生技術(shù)，再生后的材料仍將用于瀝青層，主要用于道路的聯(lián)結(jié)層、下面層或柔性基層，也常用于鄉(xiāng)村道路的翻修。再生層既包括瀝青面層又包括非瀝青材料層。稱為全深式就地冷再生。全深式就地冷再生可以解決瀝青路面面層、基層的所有病害，但其施工工序復(fù)雜、施工成本高。

In situ cold recycling (CIR) refers to the technology of using special in-situ cold recycling equipment to carry out on-site cold milling, crushing and screening of asphalt pavement (if necessary), infiltrate a certain amount of new aggregate, recycled binder, active filler (cement, lime, etc.) and water, and realize the regeneration of old asphalt pavement at one time through normal temperature mixing, paving, rolling and other processes, It includes in-situ cold regeneration of asphalt layer and full depth in-situ cold regeneration. The in-situ cold regeneration of asphalt material layer only is called in-situ cold regeneration of asphalt layer. In situ cold recycling of asphalt layer is a recycling technology. The recycled materials will still be used for asphalt layer, mainly for the connecting layer, lower layer or flexible base of road, and also commonly used for the renovation of rural roads. The recycled layer includes both asphalt surface layer and non asphalt material layer. It is called full depth in-situ cold regeneration. Full depth in-situ cold recycling can solve all the diseases of asphalt pavement surface and base, but its construction process is complex and the construction cost is high.

就地?zé)嵩偕℉IR）是通過現(xiàn)場加熱、翻松、拌和、攤鋪、碾壓等工序，一次性實(shí)現(xiàn)舊瀝青路面材料的100%就地再生利用的路面再生技術(shù)，施工過程中具有無須銑刨、收集和運(yùn)輸舊路面瀝青混合料等優(yōu)點(diǎn)。此外，就地?zé)嵩偕┕に俣瓤?，效率高，通常采用單車道施工，對道路運(yùn)營影響程度低。但需要非標(biāo)準(zhǔn)專業(yè)化施工設(shè)備，對設(shè)備的功能和性能要求較高。

Geothermal recycling (HIR) is a pavement recycling technology that realizes 100% local recycling of old asphalt pavement materials at one time through on-site heating, scarifying, mixing, paving, rolling and other processes. It has the advantages of no milling, collection and transportation of old pavement asphalt mixture in the construction process. In addition, geothermal regeneration construction is fast and efficient. Single lane construction is usually adopted, which has a low impact on road operation. However, non-standard professional construction equipment is required, and the function and performance requirements of the equipment are high.

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