道路维护领域中，沥青路面与水泥路面的再生工艺呈现出截然不同的技术路径。沥青路面再生以材料性能恢复为核心，通过热再生或温拌同步再生技术实现旧料循环利用。施工过程中，专用加热设备将旧沥青路面软化130-260℃，配合铣刨装置将路面耙松指定深度。再生剂与新骨料的添加比例经过严格计算，例如某高速公路养护项目采用4.5%-7.8%的ZS型再生剂，使老化沥青性能恢复90%以上。混合料级配调整通过三维重建相机矩阵实时监控，确保20%辉绿岩新矿料精准掺配。摊铺环节采用双层摊铺工艺，初压温度控制在120℃±5℃，终压温度不低于65℃，压实度检测要求达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%.

　　水泥路面再生工艺则聚焦于结构层转化，通过全厚式移动破碎设备将旧水泥板破碎成再生集料。以湖南省S527线改造为例，施工团队采用预破、一破、二破三级破碎工艺，将路面破碎10厘米级配料。再生剂与活性剂的撒布量通过电脑精确控制，每每厘米厚度水泥用量不超过1公斤。混合料含水量维持在8-10%，由再生机电子阀自动喷淋调节。压实环节采用30吨羊足碾强震3遍初压，配合26吨单钢轮与30吨胶轮组合终压，30-40厘米厚再生基层在3-4天内即可达到通车强度。

　　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.

　　经济性对比显示，沥青再生每吨混合料可节省沥青用量20-30%，但设备投入较高。某厂拌热再生项目初期设备改造费用约300万元，通过20-30%旧料掺量可在2年内收回成本。水泥再生技术设备综合效率更高，单台全厚式破碎机日均作业面积达4000-5000，配合再生剂循环使用系统，使单造价降低40%以上。在材料运输环节，沥青再生需要温控运输车维持130℃以上温度，而水泥再生料可常温运输，每运输成本降低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.

　　两种工艺在质量控制维度存在本质差异。沥青再生通过FTIR特征峰分析确定再生剂掺量，马歇尔残留稳定度需达85%以上。某山区高速公路应用温拌再生技术后，路面疲劳寿命预测值提升2倍。水泥再生则依赖无侧限抗压强度指标，7天龄期强度需达到2.0-3.0MPa，通过添加水性再生剂使旧料包裹率提升35%。在耐久性方面，沥青再生层需加铺4厘米以上AC-13罩面，而水泥再生基层可直接承载沥青面层，减少结构层数量。

　　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.

　　技术发展呈现融合趋势，沥青再生领域开发出复拌加铺工艺，在修复5厘米深度病害的同时加铺2厘米磨耗层，施工效率提升40%。水泥再生技术则引入共振碎石化工艺，通过高频振动使旧板形成嵌挤结构，反射裂缝发生率降低75%。这些创新使两种工艺的应用边界逐渐模糊，但材料特性决定的工艺本质仍保持差异。未来随着3D智能摊铺和再生剂靶向输送技术的发展，两种再生工艺将在各自领域形成更的解决方案。

　　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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