乳化沥青冷再生混合料应用技术研究

发布时间：2018-01-07 21:41

本文关键词：乳化沥青冷再生混合料应用技术研究　出处：《长安大学》2014年硕士论文　论文类型：学位论文

【摘要】：结合连霍高速郑洛段改扩建工程，通过室内大量试验和工程经验，全面评价了适合再生的RAP性能、原材料性能及冷再生混合料路用性能，深入研究了乳化沥青冷再生混合料配合比设计和冷再生混合料施工工艺，为乳化沥青冷再生混合料的应用和推广奠定了基础，主要研究结论如下：（1）系统研究再生料RAP的材料特性，通过不同的RAP取样方法，获得有代表性的旧料来评价集料状况和沥青的老化程度，分析乳化沥青的再生机理，研究各因素对再生沥青混合料的影响。（2）在对比分析国内外配合比设计级配范围和指标要求的基础上，结合以往冷再生技术应用的成功经验，提出了适合连霍高速郑洛段改建工程配合比设计和控制指标，确定了最佳乳化沥青用量和外加水量。（3）对冷再生原材料进行系统研究，提出本工程采用的配合比设计方法，并通过室内试验，系统研究水泥掺量和再生方式对冷再生混合料路用性能影响的影响规律。（4）针对连霍高速郑洛段旧路路况进行调查、检测及评价，提出在路面病害严重路段采用乳化沥青厂拌冷再生的路面修复方案。结合改扩建工程实际，系统研究乳化沥青冷再生施工工艺，提出一整套施工与质量控制体系，评价其经济及社会效益。研究结果表明，在连霍高速郑洛段改扩建工程中成功铺筑实体工程，应用效果良好，说明乳化沥青冷再生混合料应用技术具有科学性和可行性，，适合我国的工程实际，具有良好的经济社会效益。
[Abstract]:Combined with the extension project of Zhengluo section of Lianghuo Expressway, the performances of RAP, raw materials and cold recycled mixture were comprehensively evaluated through a large number of laboratory tests and engineering experience. The proportion design of emulsified bitumen cold recycled mixture and the construction technology of cold recycled mixture are deeply studied, which lays a foundation for the application and popularization of emulsified asphalt cold recycled mixture. The main research conclusions are as follows: 1) the material characteristics of recycled RAP are systematically studied. Through different RAP sampling methods, representative old materials are obtained to evaluate aggregate status and asphalt aging degree, and the regeneration mechanism of emulsified asphalt is analyzed. The influence of various factors on recycled asphalt mixture is studied. 2) on the basis of comparing and analyzing the gradation range and index requirements of mix ratio design at home and abroad, combining with the successful experience of the application of cold regeneration technology in the past. The design and control index of mix ratio for the reconstruction project of Zhengluo section of Lianghuo high speed are put forward, and the optimum amount of emulsified asphalt and the amount of added water are determined. (3) A systematic study on cold recycled raw materials is carried out, and a mix ratio design method adopted in this project is put forward, and the experiment is carried out in the laboratory. The influence of cement content and recycling method on road performance of cold recycled mixture is studied systematically. 4) according to the investigation, detection and evaluation of the old road condition in Zhengluo section of Lianghuo Expressway, the paper puts forward the pavement restoration scheme of cold regeneration with emulsified asphalt factory in the seriously damaged section of the road surface, combining with the reality of the reconstruction and extension project. The cold regeneration construction technology of emulsified asphalt is studied systematically. A set of construction and quality control system is put forward, and its economic and social benefits are evaluated. The research results show that the application effect of the solid project is good in the reconstruction and extension project of Zhengluo section of Lianghuo Expressway, which indicates that the application technology of emulsified bitumen cold recycled mixture is scientific and feasible. It is suitable for the engineering practice of our country and has good economic and social benefits.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U414

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