道路維護(hù)領(lǐng)域中，瀝青路面與水泥路面的再生工藝呈現(xiàn)出截然不同的技術(shù)路徑。瀝青路面再生以材料性能恢復(fù)為核心，通過熱再生或溫拌同步再生技術(shù)實(shí)現(xiàn)舊料循環(huán)利用。施工過程中，專用加熱設(shè)備將舊瀝青路面軟化130-260℃，配合銑刨裝置將路面耙松指定深度。再生劑與新骨料的添加比例經(jīng)過嚴(yán)格計(jì)算，例如某高速公路養(yǎng)護(hù)項(xiàng)目采用4.5%-7.8%的ZS型再生劑，使老化瀝青性能恢復(fù)90%以上。混合料級配調(diào)整通過三維重建相機(jī)矩陣實(shí)時監(jiān)控，確保20%輝綠巖新礦料精準(zhǔn)摻配。攤鋪環(huán)節(jié)采用雙層攤鋪工藝，初壓溫度控制在120℃±5℃，終壓溫度不低于65℃，壓實(shí)度檢測要求達(dá)98%以上。

　　In the field of road maintenance, the recycling process of asphalt pavement and cement pavement presents completely different technological paths. The regeneration of asphalt pavement focuses on the recovery of material properties, and achieves the recycling of old materials through hot regeneration or warm mixing synchronous regeneration technology. During the construction process, specialized heating equipment softens the old asphalt pavement to 130-260 ℃ and, in conjunction with milling and planing devices, loosens the pavement to the specified depth. The addition ratio of rejuvenator to new aggregate is strictly calculated. For example, a certain highway maintenance project uses 4.5% -7.8% ZS type rejuvenator to restore the performance of aged asphalt to over 90%. The gradation adjustment of the mixture is monitored in real-time through a 3D reconstruction camera matrix to ensure accurate blending of 20% new diabase mineral material. The paving process adopts a double-layer paving technique, with the initial compaction temperature controlled at 120 ℃± 5 ℃ and the final compaction temperature not lower than 65 ℃. The compaction degree detection requirement is above 98%.

　　水泥路面再生工藝則聚焦于結(jié)構(gòu)層轉(zhuǎn)化，通過全厚式移動破碎設(shè)備將舊水泥板破碎成再生集料。以湖南省S527線改造為例，施工團(tuán)隊(duì)采用預(yù)破、一破、二破三級破碎工藝，將路面破碎10厘米級配料。再生劑與活性劑的撒布量通過電腦精確控制，每每厘米厚度水泥用量不超過1公斤。混合料含水量維持在8-10%，由再生機(jī)電子閥自動噴淋調(diào)節(jié)。壓實(shí)環(huán)節(jié)采用30噸羊足碾強(qiáng)震3遍初壓，配合26噸單鋼輪與30噸膠輪組合終壓，30-40厘米厚再生基層在3-4天內(nèi)即可達(dá)到通車強(qiáng)度。

　　The cement pavement recycling process focuses on the transformation of structural layers, using full thickness mobile crushing equipment to crush old cement slabs into recycled aggregates. Taking the S527 line renovation in Hunan Province as an example, the construction team adopted a three-level crushing process of pre crushing, first crushing, and second crushing to crush the road surface to a 10 centimeter level. The spreading amount of rejuvenator and activator is precisely controlled by the computer, and the amount of cement used per square meter and centimeter thickness does not exceed 1 kilogram. The moisture content of the mixture is maintained at 8-10%, which is automatically sprayed and regulated by the electronic valve of the regeneration machine. In the compaction process, a 30 ton sheep foot roller is used for strong earthquake initial compaction for 3 times, combined with a 26 ton single steel wheel and a 30 ton rubber wheel for final compaction. The 30-40 centimeter thick recycled base layer can reach the traffic strength within 3-4 days.

　　經(jīng)濟(jì)性對比顯示，瀝青再生每噸混合料可節(jié)省瀝青用量20-30%，但設(shè)備投入較高。某廠拌熱再生項(xiàng)目初期設(shè)備改造費(fèi)用約300萬元，通過20-30%舊料摻量可在2年內(nèi)收回成本。水泥再生技術(shù)設(shè)備綜合效率更高，單臺全厚式破碎機(jī)日均作業(yè)面積達(dá)4000-5000，配合再生劑循環(huán)使用系統(tǒng)，使單造價降低40%以上。在材料運(yùn)輸環(huán)節(jié)，瀝青再生需要溫控運(yùn)輸車維持130℃以上溫度，而水泥再生料可常溫運(yùn)輸，每運(yùn)輸成本降低60%。

　　Economic comparison shows that asphalt recycling can save 20-30% of asphalt usage per ton of mixture, but the equipment investment is relatively high. The initial equipment renovation cost of a certain factory's hot recycling project is about 3 million yuan, and the cost can be recovered within 2 years by adding 20-30% old materials. The comprehensive efficiency of cement recycling technology equipment is higher, with a daily operating area of 4000-5000 square meters for a single full thickness crusher. Combined with a recycling system for recycling agents, the cost per square meter is reduced by more than 40%. In the material transportation process, asphalt recycling requires temperature controlled transport vehicles to maintain a temperature above 130 ℃, while cement recycled materials can be transported at room temperature, reducing transportation costs by 60% per kilometer.

　　兩種工藝在質(zhì)量控制維度存在本質(zhì)差異。瀝青再生通過FTIR特征峰分析確定再生劑摻量，馬歇爾殘留穩(wěn)定度需達(dá)85%以上。某山區(qū)高速公路應(yīng)用溫拌再生技術(shù)后，路面疲勞壽命預(yù)測值提升2倍。水泥再生則依賴無側(cè)限抗壓強(qiáng)度指標(biāo)，7天齡期強(qiáng)度需達(dá)到2.0-3.0MPa，通過添加水性再生劑使舊料包裹率提升35%。在耐久性方面，瀝青再生層需加鋪4厘米以上AC-13罩面，而水泥再生基層可直接承載瀝青面層，減少結(jié)構(gòu)層數(shù)量。

　　There are essential differences between the two processes in terms of quality control. The optimal dosage of asphalt rejuvenator is determined through FTIR characteristic peak analysis, and the Marshall residual stability needs to be above 85%. After the application of warm mix regeneration technology on a mountainous highway, the predicted fatigue life of the road surface has doubled. Cement regeneration relies on the unconfined compressive strength index, and the 7-day strength needs to reach 2.0-3.0MPa. By adding water-based regeneration agents, the old material wrapping rate can be increased by 35%. In terms of durability, the asphalt recycled layer requires an AC-13 overlay of at least 4 centimeters, while the cement recycled base layer can directly support the asphalt surface layer, reducing the number of structural layers.

　　技術(shù)發(fā)展呈現(xiàn)融合趨勢，瀝青再生領(lǐng)域開發(fā)出復(fù)拌加鋪工藝，在修復(fù)5厘米深度病害的同時加鋪2厘米磨耗層，施工效率提升40%。水泥再生技術(shù)則引入共振碎石化工藝，通過高頻振動使舊板形成嵌擠結(jié)構(gòu)，反射裂縫發(fā)生率降低75%。這些創(chuàng)新使兩種工藝的應(yīng)用邊界逐漸模糊，但材料特性決定的工藝本質(zhì)仍保持差異。未來隨著3D智能攤鋪和再生劑靶向輸送技術(shù)的發(fā)展，兩種再生工藝將在各自領(lǐng)域形成更的解決方案。

　　Technological development is showing a trend of integration. In the field of asphalt recycling, a compound mixing and paving process has been developed, which not only repairs a 5cm deep disease but also adds a 2cm wearing layer, resulting in a 40% increase in construction efficiency. The cement recycling technology introduces the resonance crushing process, which uses high-frequency vibration to form an embedded structure in the old board, reducing the incidence of reflection cracks by 75%. These innovations have gradually blurred the application boundaries of the two processes, but the essence of the processes determined by material properties still remains different. In the future, with the development of 3D intelligent paving and targeted delivery technology for regenerants, the two regeneration processes will form more professional solutions in their respective fields.

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