在道路的生命周期中，隨著時(shí)間的推移和交通荷載的不斷作用，路面會(huì)逐漸出現(xiàn)各種病害，如裂縫、車轍、坑槽等。為了恢復(fù)道路的使用性能，延長其使用壽命，道路養(yǎng)護(hù)工作至關(guān)重要。而就地冷再生技術(shù)，作為一種高效、環(huán)保且經(jīng)濟(jì)的養(yǎng)護(hù)方法，正逐漸在道路工程領(lǐng)域嶄露頭角。

　　In the lifecycle of roads, with the passage of time and the continuous action of traffic loads, various diseases such as cracks, ruts, potholes, etc. will gradually appear on the road surface. In order to restore the performance and prolong the service life of roads, road maintenance work is crucial. On site cold recycling technology, as an efficient, environmentally friendly, and economical maintenance method, is gradually emerging in the field of road engineering.

　　01就地冷再生技術(shù)的核心原理

　　The core principle of on-site cold regeneration technology

　　就地冷再生技術(shù)（In-Situ Cold Recycling）是一種直接在原路面上進(jìn)行的道路修復(fù)工藝，通過破碎舊路面材料（瀝青層或部分基層），加入再生劑（如泡沫瀝青、乳化瀝青、水泥等），經(jīng)拌和、攤鋪、壓實(shí)后形成新的路面結(jié)構(gòu)層。該技術(shù)實(shí)現(xiàn)舊料100%循環(huán)利用，屬于綠色可持續(xù)的道路養(yǎng)護(hù)技術(shù)。

　　In Situ Cold Recycling is a road repair process that is directly carried out on the original pavement. By crushing the old pavement materials (asphalt layer or part of the base course), adding regenerants (such as foam asphalt, emulsified asphalt, cement, etc.), a new pavement structure layer is formed after mixing, paving, and compaction. This technology achieves 100% recycling of old materials and belongs to green and sustainable road maintenance technology.

　　以泡沫瀝青冷再生為例，其原理是將常溫水注入熱瀝青中，使瀝青瞬間膨脹形成大量瀝青泡沫 。這些泡沫破裂后與集料接觸，化為無數(shù)“小顆粒”散布于細(xì)集料表面，形成粘有大量瀝青的細(xì)料。經(jīng)過拌和壓實(shí)，細(xì)料填充粗料間空隙，讓混合料達(dá)到穩(wěn)定狀態(tài)，從而形成性能良好的路面結(jié)構(gòu)層。

　　Taking the cold recycling of foam asphalt as an example, the principle is to inject normal temperature water into hot asphalt to make asphalt expand instantaneously to form a large amount of asphalt foam. These foam come into contact with the aggregate after breaking and become numerous "small particles" scattered on the surface of the fine aggregate, forming fine aggregate with a large amount of asphalt. After mixing and compacting, fine materials fill the gaps between coarse materials to achieve a stable state of the mixture, thereby forming a high-performance pavement structure layer.

　　02因地制宜：不同就地冷再生技術(shù)的選用策略

　　02 Tailored to local conditions: selection strategies for different on-site cold recycling technologies

　　水泥混凝土路面全厚式移動(dòng)破碎就地冷再生：是指利用移動(dòng)破碎設(shè)備，就地將舊水泥混凝土路面板全厚度破碎成具有一定級(jí)配的再生集料（或者通過添加適量的新集料后使再生集料的合成級(jí)配滿足公路水泥穩(wěn)定碎石基層的級(jí)配要求），然后添加再生劑（通常是水泥，或者摻配一定比例的其它膠凝結(jié)合料）、活性劑（如鋼渣超微粉等，改善再生結(jié)構(gòu)層的性能）、水后，通過再生機(jī)就地拌和成水泥穩(wěn)定碎石混合料，經(jīng)初壓、整平、終壓、養(yǎng)生，最終形成一定厚度的再生水泥穩(wěn)定（或其它材料穩(wěn)定）碎石基層（或者中、下面層）。

　　Full thickness mobile crushing on-site cold recycling of cement concrete pavement: refers to the use of mobile crushing equipment to crush the entire thickness of old cement concrete pavement panels into recycled aggregates with a certain grading (or by adding an appropriate amount of new aggregates to make the composite grading of recycled aggregates meet the grading requirements of highway cement stabilized crushed stone base), and then adding recycling agents (usually cement, or mixed with a certain proportion of other cementitious binders), active agents (such as steel slag ultrafine powder, etc., to improve the performance of the recycled structural layer), water, and then mixing them on site with a recycling machine to form a cement stabilized crushed stone mixture. After initial pressing, leveling, final pressing, and curing, a certain thickness of recycled cement stabilized (or other material stabilized) crushed stone base is finally formed. Or the middle and lower layers.

　　瀝青路面就地冷再生雙層連鋪技術(shù)：是指使用兩套后出料模式的就地冷再生機(jī)機(jī)組，依次對(duì)原瀝青路面的瀝青面層進(jìn)行泡沫瀝青就地冷再生和水穩(wěn)基層進(jìn)行水泥就地冷再生，在水穩(wěn)基層冷再生層壓實(shí)后（初凝前）鋪設(shè)泡沫瀝青冷再生混合料，從而雙層冷再生一次性完成的瀝青路面結(jié)構(gòu)性修復(fù)技術(shù)。

　　In situ cold recycling double-layer continuous paving technology of asphalt pavement: it refers to the structural repair technology of asphalt pavement that uses two sets of in situ cold recycling machine units in the rear discharge mode to carry out foam asphalt in situ cold recycling on the asphalt surface course of the original asphalt pavement and cement in situ cold recycling on the water stabilized base course in turn. After the cold recycling layer of the water stabilized base course is compacted (before initial setting), foam asphalt cold recycling mixture is paved, so that the double-layer cold recycling can be completed once.

　　本文由  冷再生機(jī)租賃 友情奉獻(xiàn).更多有關(guān)的知識(shí)請(qǐng)點(diǎn)擊  http://www.622410.cn/   真誠的態(tài)度.為您提供為全面的服務(wù).更多有關(guān)的知識(shí)我們將會(huì)陸續(xù)向大家奉獻(xiàn).敬請(qǐng)期待.

　　This article is a friendly contribution from Cold Recycling Machine Rental For more related knowledge, please click http://www.622410.cn/ Sincere attitude To provide you with comprehensive services We will gradually contribute more relevant knowledge to everyone Coming soon.