沥青路面再生技术在高速公路养护中的应用

发布时间：2018-06-07 10:29

本文选题：沥青路面 + 高速公路　；参考：《山东大学》2014年硕士论文

【摘要】：目前,我国公路总里程已突破400万公里,二级以上公路46万公里,其中高速公路8万公里,居世界第二。到“十二五”末,随着公路网规模进一步扩大,公路总里程将达到450万公里,国家高速公路网基本建成,高速公路总里程达到10.8万公里。当前,我国公路己陆续进入大、中修期,我国道路工作的重心也从新修建设向大中修养护转移。养护维修方式的选择,关系到成本的节约,路面行驶性能的恢复,环境污染的减少。旧沥青路面再生利用近几年在我国发展比较迅速,已经得到各方面重视,无论从设备还是从技术上都达到了一个新的高度,可以在养护维修工程中大力推广本文主要对沥青路面就地热再生技术在青银高速北绕城项目上的应用进行研究。主要进行了原有老路面混合料(RAP)的级配分析、再生混合料配合比设计、热再生设备组合、就地热再生的主要施工工艺、再生后路面相关指标的分析。就地热再生路面质量与沥青混合料的材料组成及施工工艺的控制好坏直接相关。如果通过合理添加沥青再生剂,将再生沥青混合料所含旧料中的那部分老化沥青的性能恢复到新沥青的水平,再通过精心地施工组织,热再生沥青混合料就能基本满足路用性能,甚至于优于普通新拌沥青。沥青路面热再生技术不但具有一定的经济效益,而且还有良好的社会效益和环境效益。热再生技术能充分利用旧沥青混合料,避免废旧沥青的污染,能节约大量的沥青和砂石材料,符合我国可持续发展战略的要求。本文还对乳化沥青厂拌冷再生技术在胶州湾高速公路路面大修工程上的应用进行了研究。山东省胶州湾高速公路路面大修工程中进行了乳化沥青厂拌冷再生用于基层的试验段施工。针对乳化沥青厂拌冷再生混合料的材料特性,对再生混合料的配合比及性能进行评价研究,优化乳化沥青厂拌冷再生混合料设计方法,总结乳化沥青厂拌冷再生的施工工艺、配合比以及摊铺工艺,通过施工提高和完善我国现行的冷再生技术,从而推动该项技术在我国大面积的推广应用。
[Abstract]:At present, the total mileage of highways in China has exceeded 4 million km, and 460000 km of highways above the second level, of which 80,000 km of highways, rank second in the world. By the end of the 12th Five-Year Plan, with the further expansion of the highway network, the total mileage of the highway will reach 4.5 million kilometers, the national highway network will be basically completed, and the total mileage of the expressway will reach 108000 km. At present, the highway of our country has entered the period of large and medium repair one after another, and the focus of road work in our country has also shifted from the new construction to the maintenance of the major and medium repair. The choice of maintenance mode is related to the cost saving, the recovery of pavement driving performance and the reduction of environmental pollution. The recycled utilization of old asphalt pavement has developed rapidly in China in recent years, and has been paid attention to by all sides. It has reached a new height in terms of equipment and technology, and can be popularized in maintenance and repair engineering. This paper mainly studies the application of bituminous pavement geothermal regeneration technology in the project of Qingyin Expressway North Roundabout. In this paper, the gradation analysis of the old pavement mixture (rap), the mix ratio design of the recycled mixture, the combination of the hot regeneration equipment, the main construction technology of the geothermal regeneration and the analysis of the road surface related indexes after the regeneration are mainly carried out. The quality of geothermal recycled pavement is directly related to the material composition of asphalt mixture and the control of construction technology. If the performance of the aging asphalt in the recycled asphalt mixture is restored to the level of the new asphalt through the reasonable addition of the asphalt regenerative agent, and then it is organized through careful construction, Hot-recycled asphalt mixture can basically meet the road performance, even better than ordinary fresh asphalt. Asphalt pavement thermal regeneration technology not only has certain economic benefits, but also has good social and environmental benefits. Thermal regeneration technology can make full use of old asphalt mixture, avoid the pollution of waste asphalt, save a lot of asphalt and sand materials, and meet the requirements of sustainable development strategy of our country. This paper also studies the application of emulsified bitumen cold recycling technology in road surface overhaul of Jiaozhou Bay Expressway. In Shandong Province Jiaozhou Bay Expressway pavement overhaul project carried on the emulsified asphalt factory mix cold regeneration to use in the base course test section construction. According to the material characteristics of emulsified asphalt mixture, the mix ratio and performance of recycled asphalt mixture are evaluated, the design method of emulsified asphalt factory mix cold recycled mixture is optimized, and the construction technology of emulsified asphalt factory mix cold recycling mixture is summarized. In order to promote the popularization and application of this technology in China, the existing cold regeneration technology in China is improved and perfected through the construction of mix ratio and spreading technology.
【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U416.217

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