排水性沥青路面在道路养护中的应用研究
发布时间：2018-12-20 07:08
【摘要】：目前国内大部分的公路网络已经初步形成,在经济发展中发挥了重要作用。然而在公路发挥着积极有效作用的同时,随着路龄的增加、交通量的增长,其许多服务功能正在逐渐退化,此时需要对原有道路进行养护,改善其路用状况。作为旧沥青路面上的超薄罩面,它是道路养护的最主要措施。而OGFC路面是一种具有良好排水、防滑、降噪功能的新型沥青路面结构,因此,为了提高道路的行驶安全性,有必要在道路的养护建设中开展排水性沥青路面的研究,将这种具有高抗滑性能和抗滑耐久性的沥青路面技术方案充实到道路的养护对策中。本文借鉴国内、外有关研究成果,结合室内试验、实体工程及OGFC混合料特点对原材料、配合比设计方法及路用性能进行了深入研究,得到了比较系统的OGFC在道路养护过程中应用的技术成果。在原材料方面,本课题建议采用SBS改性沥青,试验表明其改性效果完全可以满足要求,对粗集料提出要求具有高强、耐磨、表面粗糙、棱角性好等特点。在配合比方面,提出了OGFC配合比设计目标,并围绕设计目标,系统分析研究了矿料级配与最佳沥青用量的确定方法。进行了大量OGFC混合料路用性能方面的室内试验研究,结果表明其路面力学性能等方面均能够满足要求,甚至部分性能(如高温性能)显著优于传统抗滑表层;同时研究表明OGFC具有良好的排水性能,这对于降雨频繁的高速公路上增加雨天行车安全系数有很大的意义。特别是作为养护路面类型,OGFC在抗滑耐久性方面具有其他类型沥青混合料所不具备的优势,能大大延长路面使用寿命。利用试验段的铺筑研究其施工工艺,提出了OGFC路面的施工机械组合、施工温度控制方法以及OGFC混合料拌和、运输、摊铺、碾压等方面系统的施工工艺。
[Abstract]:At present, most of the highway network in China has been formed, which plays an important role in economic development. However, with the increase of road age and the increase of traffic volume, many of the service functions of highway are gradually degraded. At this time, it is necessary to maintain the existing roads and improve their road use. As the super thin overlay of old asphalt pavement, it is the main measure of road maintenance. OGFC pavement is a new asphalt pavement structure with good drainage, anti-skid and noise reduction. Therefore, in order to improve the driving safety of the road, it is necessary to carry out the research on the drainage asphalt pavement in the road maintenance and construction. The technical scheme of asphalt pavement with high skid resistance and anti-skid durability is enriched in the maintenance strategy of the road. In this paper, the raw materials, mix ratio design method and road performance are deeply studied in combination with indoor test, solid engineering and OGFC mixture characteristics, with reference to domestic and foreign related research results. The technical results of systematic application of OGFC in road maintenance are obtained. In raw materials, SBS modified asphalt is proposed in this paper. The test results show that the modified asphalt has the characteristics of high strength, wear resistance, rough surface and good angularity. In the aspect of mix ratio, the design goal of OGFC mixture ratio is put forward, and the determination method of mineral aggregate gradation and optimum asphalt content is systematically analyzed and studied around the design goal. A large number of indoor tests on the pavement performance of OGFC mixture have been carried out. The results show that the pavement mechanical properties can meet the requirements, and even some properties (such as high temperature performance) are obviously superior to the traditional anti-skid layer. At the same time, the study shows that OGFC has good drainage performance, which has great significance for increasing the safety factor of driving on rainy days on the highway with frequent rainfall. Especially as a kind of pavement maintenance, OGFC has advantages over other kinds of asphalt mixture in the aspect of anti-skid durability, which can greatly prolong the pavement service life. The construction technology of OGFC pavement is studied by using the paving of test section. The construction machinery combination, construction temperature control method and systematic construction technology of OGFC mixture mixing, transportation, spreading and rolling are put forward.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U416.217;U418.6
本文编号：2387626
[Abstract]:At present, most of the highway network in China has been formed, which plays an important role in economic development. However, with the increase of road age and the increase of traffic volume, many of the service functions of highway are gradually degraded. At this time, it is necessary to maintain the existing roads and improve their road use. As the super thin overlay of old asphalt pavement, it is the main measure of road maintenance. OGFC pavement is a new asphalt pavement structure with good drainage, anti-skid and noise reduction. Therefore, in order to improve the driving safety of the road, it is necessary to carry out the research on the drainage asphalt pavement in the road maintenance and construction. The technical scheme of asphalt pavement with high skid resistance and anti-skid durability is enriched in the maintenance strategy of the road. In this paper, the raw materials, mix ratio design method and road performance are deeply studied in combination with indoor test, solid engineering and OGFC mixture characteristics, with reference to domestic and foreign related research results. The technical results of systematic application of OGFC in road maintenance are obtained. In raw materials, SBS modified asphalt is proposed in this paper. The test results show that the modified asphalt has the characteristics of high strength, wear resistance, rough surface and good angularity. In the aspect of mix ratio, the design goal of OGFC mixture ratio is put forward, and the determination method of mineral aggregate gradation and optimum asphalt content is systematically analyzed and studied around the design goal. A large number of indoor tests on the pavement performance of OGFC mixture have been carried out. The results show that the pavement mechanical properties can meet the requirements, and even some properties (such as high temperature performance) are obviously superior to the traditional anti-skid layer. At the same time, the study shows that OGFC has good drainage performance, which has great significance for increasing the safety factor of driving on rainy days on the highway with frequent rainfall. Especially as a kind of pavement maintenance, OGFC has advantages over other kinds of asphalt mixture in the aspect of anti-skid durability, which can greatly prolong the pavement service life. The construction technology of OGFC pavement is studied by using the paving of test section. The construction machinery combination, construction temperature control method and systematic construction technology of OGFC mixture mixing, transportation, spreading and rolling are put forward.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U416.217;U418.6
【参考文献】
相关期刊论文 前1条
1 王吉忠,李日春,庄继德;胎面单元对轮胎薄膜湿牵引性能的影响[J];汽车技术;1998年12期
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