九景高速公路改造沥青冷再生技术研究
发布时间：2019-03-27 19:47
【摘要】：江西省1996年建成的省内的第一条高速公路,至今已近二十年,随续修建的各条高速已陆续进入大修期,因而也将产生大量的旧沥青混合料。路面冷再生技术可将旧沥青路面混合料重复利用,提高资源利用率,保护生态环境,符合当前国家提倡的低碳循环经济。因此,对沥青路面冷再生技术有重要的意义。本项目以江西省九景高速公路技术改造工程为依托。首先,根据原路面的设计情况,指出了存在的问题,从整体上分析了整个路段的路面结构强度及使用性能,分析结果发现,整个路段公里代表弯沉值普遍较大,全线大部分路段承载力不足,整体质量较差,亟待进行补强以提高现有道路的承载能力和使用状况。本文根据弯沉检测资料以及交通荷载分析,并结合结构力学计算设计出了三种对应于不同损坏路面情况的补强方案。其次,阐述分析了沥青路面再生技术分类及其适用性,确定本项目利用厂拌冷再生技术来进行路面改造。通过室内试验,研究了不同水泥、乳化沥青含量的厂拌冷再生沥青混合料的路用性能,如水稳定性、高温稳定性、低温抗裂性、疲劳性能、强度等。试验结果显示,设计的厂拌冷再生沥青混合料性能符合规范要求。最后本文还对乳化沥青厂拌冷再生混合料施工施工过程中各个环节的工艺控制提出相关要求,归纳整理了相关施工质量控制要点和验收标准,为厂拌合冷再生混合料的推广应用提供了参考。
[Abstract]:The first expressway built in Jiangxi Province in 1996 has been built for nearly 20 years. The highway built along with it has entered the overhaul period one after another, so a large number of old asphalt mixtures will be produced. The cold recycling technology of pavement can reuse the old asphalt pavement mixture, improve the utilization rate of resources and protect the ecological environment, which accords with the low-carbon circular economy advocated by our country at present. Therefore, it is of great significance for cold recycling technology of asphalt pavement. This project is based on the technical reconstruction project of Jiujing Expressway in Jiangxi Province. First of all, according to the design of the original road surface, the existing problems are pointed out, and the pavement structural strength and service performance of the whole road section are analyzed as a whole. The results show that the whole road section km represents a large deflection value generally. The load-carrying capacity of most sections of the whole line is insufficient and the overall quality is poor. It is urgent to strengthen the existing road to improve the load-carrying capacity and the use of the road. Based on the data of deflection detection and traffic load analysis and combined with structural mechanics calculation, three reinforcement schemes corresponding to different damaged pavement conditions are designed in this paper. Secondly, this paper analyzes the classification and applicability of asphalt pavement regeneration technology, and determines that this project uses plant cold recycling technology to carry out pavement reconstruction. The road performance, such as water stability, high temperature stability, low temperature crack resistance, fatigue performance and strength of cold reclaimed asphalt mixtures with different cement and emulsified asphalt contents, were studied by laboratory tests. The test results show that the performance of the designed cold reclaimed asphalt mixture can meet the requirements of the specification. Finally, this paper also puts forward the related requirements for the process control of each link in the construction process of the cold reclaimed mixture of emulsified asphalt plant, and summarizes the key points of construction quality control and acceptance standards. It provides a reference for the popularization and application of plant mixed cold recycled mixture.
【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】：U414
本文编号：2448504
[Abstract]:The first expressway built in Jiangxi Province in 1996 has been built for nearly 20 years. The highway built along with it has entered the overhaul period one after another, so a large number of old asphalt mixtures will be produced. The cold recycling technology of pavement can reuse the old asphalt pavement mixture, improve the utilization rate of resources and protect the ecological environment, which accords with the low-carbon circular economy advocated by our country at present. Therefore, it is of great significance for cold recycling technology of asphalt pavement. This project is based on the technical reconstruction project of Jiujing Expressway in Jiangxi Province. First of all, according to the design of the original road surface, the existing problems are pointed out, and the pavement structural strength and service performance of the whole road section are analyzed as a whole. The results show that the whole road section km represents a large deflection value generally. The load-carrying capacity of most sections of the whole line is insufficient and the overall quality is poor. It is urgent to strengthen the existing road to improve the load-carrying capacity and the use of the road. Based on the data of deflection detection and traffic load analysis and combined with structural mechanics calculation, three reinforcement schemes corresponding to different damaged pavement conditions are designed in this paper. Secondly, this paper analyzes the classification and applicability of asphalt pavement regeneration technology, and determines that this project uses plant cold recycling technology to carry out pavement reconstruction. The road performance, such as water stability, high temperature stability, low temperature crack resistance, fatigue performance and strength of cold reclaimed asphalt mixtures with different cement and emulsified asphalt contents, were studied by laboratory tests. The test results show that the performance of the designed cold reclaimed asphalt mixture can meet the requirements of the specification. Finally, this paper also puts forward the related requirements for the process control of each link in the construction process of the cold reclaimed mixture of emulsified asphalt plant, and summarizes the key points of construction quality control and acceptance standards. It provides a reference for the popularization and application of plant mixed cold recycled mixture.
【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】：U414
【参考文献】
相关期刊论文 前2条
1 佘兆宇;戴震;;乳化沥青冷再生拌合楼的研制与工程应用[J];现代交通技术;2006年04期
2 李强,马松林,王鹏飞;沥青路面冷再生混合料疲劳性能[J];交通运输工程学报;2004年01期
，本文编号：2448504
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