厂拌热再生方案及施工工艺研究

发布时间：2018-04-09 08:05

本文选题：再生方案　切入点：再生方案设计　出处：《长安大学》2014年硕士论文

【摘要】：从高速公路路网建设以来，对于新建高速公路技术日益成熟，但在走向成熟过程中会遗留下许多问题，除了显而易见的环境污染问题，以及越来越得到重视的资源浪费问题，更重要也日益突出的问题是原先因在探索阶段所建的高速公路的各方面性能虽然短期满足要求，但是长期性能下降严重，导致寿命远低于设计使用寿命，再加上我国公路交通负荷较大，公路损坏更是频繁，对公路的养护维护产生巨大的压力。针对我国公路面临大规模改扩建及大修的大环境，需要对再生的方案进行必要的研究。从再生方案选择、再生方案的设计及施工质量的监控入手，把再生的应用在技术层面上加深研究，，从而达到资源最大利用的目的。本文依托石安高速公路改扩建工程，从现有国内外再生技术入手，分析各个再生方法的适用性，提出石安高速改扩建的再生方法，并调查国内外已建厂拌热再生改造公路的旧料掺配比例及再生层位选择，结合石安旧料筛分后的级配及性能，对石安现有旧料掺配比例进行改进，并从沥青老化程度、旧料掺配率及是否添加改性剂方面进行高比例厂拌热再生方案选择标准的拟定。对石安高速高比例混合料的级配进行研究，对旧料的控制、级配选择及调整提出改进意见，并对施工中需要注意的操作进行改进建议，提出一整套高比例再生混合料设计的方案，并对于路用性能实验的选择进行一定的研究。
[Abstract]:Since the highway network construction, the technology of newly built expressway has become more and more mature, but in the process of becoming mature, many problems will be left behind, in addition to the obvious environmental pollution problem, as well as the problem of waste of resources, which has been paid more and more attention to.More important and increasingly prominent is the fact that, although the various aspects of the highway originally built during the exploration phase met the requirements in the short term, the long-term performance declined seriously, leading to a life span well below the designed service life.In addition, the highway traffic load is heavy and the highway damage is more frequent in our country, which has great pressure on the maintenance and maintenance of the highway.In view of the large scale reconstruction and extension and overhaul of highway in our country, it is necessary to study the plan of regeneration.Starting with the selection of regeneration scheme, the design of regeneration scheme and the monitoring of construction quality, the application of regeneration in the technical level is further studied, so as to achieve the purpose of maximum utilization of resources.Based on the reconstruction and extension project of Shi'an Expressway, starting from the existing domestic and foreign regeneration technology, this paper analyzes the applicability of each regeneration method, and puts forward the regeneration method of Shi'an High Speed Reconstruction and extension Project.It also investigates the mix proportion of used materials and the selection of regenerative layer of the road that has been reclaimed by domestic and foreign factories, and combines the gradation and performance of Shi'an used materials after screening, and improves the proportion of existing used materials in Shi'an, and from the degree of asphalt aging, it improves the existing mix proportion of used materials in Shian.The selection criteria of high proportion of heat regeneration scheme for mill mixing were worked out in terms of blending ratio of used materials and whether to add modifier or not.This paper studies the gradation of Shi'an high speed and high proportion mixture, puts forward some suggestions for improving the control, gradation selection and adjustment of used materials, and puts forward some suggestions for improving the operation that should be paid attention to in construction.This paper puts forward a set of design scheme of high proportion recycled mixture, and studies the choice of road performance experiment.
【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;U418.8

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