沥青冷再生混合料性能研究及应用

发布时间：2018-05-30 07:38

本文选题：沥青冷再生混合料 + 级配设计　；参考：《北京交通大学》2017年硕士论文

【摘要】：近年来,我国高速公路得到了快速的发展,但是现在很多道路出现了损坏,道路发展已经进入了养修与保护时代。公路沥青路面的翻修产生了大量的废弃料,如果我们将这些沥青废弃料循环利用,将会产生巨大的经济价值,同时也保护了环境。为了充分利用好这些沥青废弃料,沥青再生技术的研究将很有必要。论文在充分分析国内外沥青路面冷再生技术的研究现状后,以江苏徐州北段G206国道的大修为研究对象,重新研究RAP含量更高的HIRM冷再生技术。具体研究内容如下:(1)对G206公路的自然条件、交通量、原有路面的结构以及产生的路面病害进行了调查和分析。对G206的路面状况如破损状况、车辙深度、平整度、病害进行了评价,给出了几种不同的维修方案并进行了比选。(2)查阅文献,提出了 HIRM沥青冷再生的一套设计方法和步骤:对HIRM原材料的级配进行了检测,提出了一套HIRM混合料的设计方法。根据配合好的级配进行试验,确定了 HIRM再生混合料的最佳液体含量、最佳乳化沥青用量。根据选定的试验方法对混合料的性能进行了检验。(3)通过查阅文献,在总结国内外设计方法的基础上提出了设再生层路面的设计步骤。通过正交试验方法,对设再生层的路面结构的主要影响因素进行了研究。针对路面破坏形式的不同,进行了设再生层的轴载换算的研究。(4)以G206为研究对象,对HIRM再生工程的级配控制方法、施工工艺、施工验收进行了研究,并且比较了其经济性。
[Abstract]:In recent years, expressway has been developing rapidly in our country, but now many roads have been damaged, and road development has entered the age of maintenance and protection. The renovation of highway asphalt pavement has produced a large amount of waste materials. If we recycle these asphalt waste materials, it will produce great economic value and protect the environment at the same time. In order to make full use of these asphalt wastes, the research of asphalt recycling technology will be necessary. After fully analyzing the research status of cold recycling technology of asphalt pavement at home and abroad, this paper takes the overhauling of G206 National Highway in Xuzhou North Section of Jiangsu Province as the research object, and restudies the cold recycling technology of HIRM with higher RAP content. The specific research contents are as follows: (1) the natural condition, traffic volume, the structure of the original pavement and the pavement diseases caused by the G206 highway are investigated and analyzed. The pavement condition of G206, such as damaged condition, rut depth, smoothness and disease, is evaluated, and several different maintenance schemes are given. A set of design methods and steps for cold regeneration of HIRM asphalt are put forward. The gradation of HIRM raw materials is tested and the design method of HIRM mixture is put forward. The optimum liquid content and emulsified asphalt content of HIRM recycled mixture were determined according to the good gradation test. According to the selected test methods, the performance of the mixture is tested. 3) based on the summary of the domestic and foreign design methods, the design steps of the recycled pavement are put forward by consulting the literature. The main influencing factors of pavement structure with regenerated layer are studied by orthogonal test method. Aiming at the different failure forms of pavement, the paper studies the axle load conversion of regenerated layer. Taking G206 as the research object, the gradation control method, construction technology and construction acceptance of HIRM regeneration project are studied, and its economy is compared.
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U414

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