新工艺在呼包高速改扩建工程中的应用

发布时间：2018-01-18 01:30

本文关键词：新工艺在呼包高速改扩建工程中的应用　出处：《长安大学》2015年硕士论文　论文类型：学位论文

【摘要】：目前国内沥青混凝土路面的改性技术主要分为沥青改性技术和沥青混合料改性技术。本文通过对实体工程的具体分析,总结了改性沥青混凝土路面和沥青混合料经过改性的路面施工技术,分析了两种技术的优劣之分。其中,两种技术中,沥青改性技术具有生产工艺复杂、生产成本高、消耗能源大、污染严重、改性沥青存储时间有限以及质量不稳定等缺点;而沥青混合料改性技术具有简化工艺、使用简单、降低成本、性能优异、环保节能、资源再生、缩短工期、延长路面使用寿命等优势特点,对提升柔性路面道路性能和服务品质具有巨大的经济效益和社会效益。在此基础上,本文结合呼和浩特至包头高速公路改扩建工程的应用实践,认识到沥青混合料通过改性其高温稳定性、低温抗裂性等性能均有不同程度的提高。此外,还详细介绍了沥青路面施工工艺及施工注意事项。本文通过对以往中小跨径梁式桥空心板预制的调查和实践,认为其芯模基本是采用充气橡胶芯模、钢模或木模。采用传统芯模虽然可以反复利用,但是都存在一定的弊端,尤其传统的橡胶芯模不可使用。当采用聚乙烯苯板芯模进行施工时无需取出芯模,简化工序,降低了施工难度,在施工过程中保证密闭进行,不变形、不漏筋,杜绝内存空气,最大程度防止氧化钢筋和钢绞线。同时,空心板截面尺寸得到了保证,与传统芯模相比,有效的提高了工程质量。本文还介绍了聚乙烯苯板抗高压、轻质防潮、不吸水、不透气、不变形、耐腐蚀等特性和相应的施工工艺。
[Abstract]:At present, the modification technology of domestic asphalt concrete pavement is mainly divided into asphalt modification technology and asphalt mixture modification technology. The construction technology of modified asphalt concrete pavement and asphalt mixture is summarized, and the advantages and disadvantages of the two technologies are analyzed. High production cost, high energy consumption, serious pollution, limited storage time of modified asphalt and unstable quality. The modified technology of asphalt mixture has the advantages of simplified technology, simple use, low cost, excellent performance, environmental protection and energy saving, resource regeneration, shortening construction period, prolonging pavement service life and so on. It has great economic and social benefits to improve the performance and service quality of flexible pavement. On this basis, this paper combines the application practice of Huhhot-Baotou Expressway Reconstruction and extension Project. It is recognized that the properties of asphalt mixture, such as high temperature stability, low temperature crack resistance and so on, have been improved in varying degrees by modifying its high temperature stability. The paper also introduces the construction technology of asphalt pavement and points for attention in detail. Through the investigation and practice of hollow slab prefabrication of medium and small span beam bridge in the past, it is considered that the core form is basically inflatable rubber core form. Steel or wood formwork. Although the use of traditional core mold can be repeatedly used, but there are certain drawbacks, especially traditional rubber core mold can not be used. When the use of polyethylene benzene core mold construction does not need to take out the core form. Simplify the working procedure, reduce the difficulty of construction, in the construction process to ensure that the airtight, no deformation, no leakage of reinforcement, no memory air, to prevent the maximum degree of oxidation of steel bars and steel strands. At the same time. The section size of hollow plate is guaranteed, compared with the traditional core mold, the engineering quality is improved effectively. This paper also introduces the polyethylene benzene board anti-high pressure, light moisture-proof, no water absorption, no air permeability, no deformation. Corrosion resistance and other characteristics and the corresponding construction process.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U418.8

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