乳化沥青厂拌冷再生技术是以高品质再生乳化沥青作为结合料，采用专用拌和机械、化特种施工工艺的冷再生成套技术，实现公路建设低碳排放与绿色养护的减排高新技术，拌合过程中不消耗燃油，全程常温拌合与施工，无碳、粉尘及其他污染物排放，保护环境及人体健康。保护环境，有效合理利用现有资源在施工适应性和经济指标上有着独特的优势。

The emulsified asphalt plant mixing cold regeneration technology is a complete set of cold regeneration technology that uses high-quality recycled emulsified asphalt as the binder, specialized mixing machinery, and specialized construction technology to achieve energy-saving and emission reduction of low-carbon emissions and green maintenance in highway construction. The mixing process does not consume fuel, and the entire process is mixed and constructed at room temperature without carbon, dust, and other pollutant emissions, protecting the environment and human health. Protecting the environment and effectively and reasonably utilizing existing resources have unique advantages in construction adaptability and economic indicators.

面铣刨的沥青旧料 100%利用；通过乳化沥青厂拌冷再生的研究应用，研发了一套联合破碎筛分设备，该设备可以将沥青旧料筛分成 0-5mm、5-10mm、10-30mm 三档，并对超粒径颗粒、沥青旧料结团颗粒也可以进行了破碎筛分处理，为实现沥青旧料 100%再生利用创造了条件。通过对依托实际工程项目试验路的铺筑，研究出厂拌冷再生作为上面层的混合料配合比设计方法，并制定混合料相关材料性能指标要求。

100% utilization of asphalt old materials from surface milling and planing; A set of combined crushing and screening equipment has been developed through the research and application of cold recycling in emulsified asphalt plants. This equipment can screen asphalt old materials into three levels: 0-5mm, 5-10mm, and 10-30mm. It can also crush and screen oversized particles and agglomerated asphalt old materials, creating conditions for achieving 100% recycling and utilization of asphalt old materials. Through the paving of experimental roads based on actual engineering projects, research is conducted on the design method of mix proportion for factory mixed cold recycling as the upper layer of the mixture, and the relevant material performance index requirements for the mixture are formulated.

（4）乳化沥青厂拌冷再生混合料作为上面层使用一个月后，经

(4) After using emulsified asphalt plant mixed cold recycled mixture as the upper layer for one month

检测路表构造深度大于 0.55mm，摆式值大于 0.58，间隙小于 5mm，渗水系数小于 200ml/min，满足规范对抗滑性能、平整度与渗水性能的要求；路面无病害，整体技术状况较好。

The depth of the road surface construction should be greater than 0.55mm, the pendulum value should be greater than 0.58, the maximum gap should be less than 5mm, and the water permeability coefficient should be less than 200ml/min, meeting the requirements of anti slip performance, flatness, and water permeability performance in the specifications; The road surface has no defects and the overall technical condition is good.

（5）通过添加不同种类、不同剂量的再生剂，根据针入度、软化点、延度试验确定了合适的再生剂，建议再生剂添加量为旧沥青含量的 4‰。

(5) By adding different types and doses of rejuvenators, suitable rejuvenators were determined based on penetration, softening point, and ductility tests. It is recommended to add 4 ‰ of the content of old asphalt as rejuvenators.

乳化沥青厂拌冷再生技术符合循环经济“减量化”、“再利用”、“资源化”原则，是应对交通行业公路养护日益严重的能源与环境问题的必由之路，符合建设资源节约型、环境友好型社会的需要。以三级公路上面层宽度按 6.5 米，厚度为 6 厘米计算，每 100 三级公路节约建设资金余额 1350 万元，说明与传统热拌沥青混合料相比，厂拌乳化沥青冷再生具有较大的经济优势，采用厂拌乳化沥青冷再生应用于公路维修及建设，具有良好减排效果和意义，具体体现在废旧材料的无尘筛分、无沥青加工环节、无烟常温拌和、节约能源及资源、零排放、零污染、零伤害等方面，更适用于边施工边保畅的工程项目，在公路提级改造、抢修保畅工程项目占将具有更加广泛的应用前景。

The cold recycling technology of emulsified asphalt plant conforms to the principles of "reduction", "reuse", and "resource utilization" in the circular economy. It is the only way to address the increasingly serious energy and environmental problems in the transportation industry and highway maintenance, and meets the needs of building a resource-saving and environmentally friendly society in the country. Taking the width of the upper layer of third-class highway as 6.5m and the thickness as 6cm, the balance of construction funds saved for every 100km of third-class highway is 13.5 million yuan, which shows that compared with the traditional hot mix asphalt mixture, the cold recycling of factory mixed emulsified asphalt has greater economic advantages. The cold recycling of factory mixed emulsified asphalt is applied to highway maintenance and construction, which has good energy conservation and emission reduction effects and environmental significance. It is specifically reflected in the aspects of dust-free screening of waste materials, asphalt processing links, smoke-free mixing at room temperature, energy and resource conservation, zero emission, zero pollution, zero injury, etc., and is more suitable for projects that keep smooth while constructing. It will be more widely used in highway upgrading, reconstruction, rush repair and smooth maintenance projects The application prospect of.

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