缓释防冰沥青混合料制备及施工技术研究

发布时间：2018-04-04 20:34

本文选题：缓释防冰沥青混合料　切入点：施工工艺　出处：《长安大学》2014年硕士论文

【摘要】：为减小冬季路面冰雪对车辆行驶安全性的影响，一些单位对缓释防冰沥青混合料做了大量的研究，这些研究主要集中在缓释防冰材料的研发、缓释防冰沥青混合料设计等方面。缓释防冰材料的称量添加工艺与缓释防冰沥青路面的施工工艺同样对缓释防冰沥青混合料的路用性能及抑制冰雪结冰效果有很大的影响，本文对其进行探讨与研究。针对间歇式拌和站的特点，研发基于螺旋输送机的缓释防冰材料称量添加设备。通过理论分析与实地测量，对该设备机械结构部分进行设计计算并选型；通过对称重计量系统工作原理、选取原则进行研究，对微处理器中称重计量运算过程建模分析，提出了称重计量系统标定的方法。分别对缓释防冰材料不同添加顺序、拌和时间下的四种室内拌和工艺成型马歇尔试件，验证四种试件的低温抗裂性、水稳定性和高温稳定性，对比试验结果确定最佳室内拌和工艺。参考室内材料添加顺序和拌和时间，建立缓释防冰沥青混合料搅拌均匀所需最少转数的数学模型，确定现场拌和站生产缓释防冰沥青混合料的拌和时间和材料添加顺序。本文依托十白高速缓释防冰沥青路面工程，根据设备匹配理论，计算出十白高速桥面施工中所需拌合站的产量，，摊铺机、运输车辆与压路机的数量。对其拌合、摊铺、碾压工序进行研究，形成了一套完整的缓释防冰沥青路面施工工艺。通过对路面施工后的质量跟踪检测，证实了缓释防冰沥青路面性能良好且抑制冰雪结冰效果明显。
[Abstract]:In order to reduce the impact of winter pavement ice and snow on vehicle driving safety, a lot of researches have been done on slow-release ice-resistant asphalt mixture. These researches mainly focus on the research and development of slow-release ice-proof material and the design of slow-release ice-proof asphalt mixture.The weighing and adding technology of slow-release anti-ice material and the construction technology of slow-release ice-proof asphalt pavement also have great influence on the pavement performance of slow-release ice-proof asphalt mixture and the effect of restraining ice and snow icing. This paper discusses and studies the technology of adding slow-release anti-ice material and the construction technology of slow-release anti-ice asphalt pavement.According to the characteristics of intermittent mixing plant, a new equipment for slowly releasing ice proof material weighing based on screw conveyor was developed.Through theoretical analysis and field measurement, the mechanical structure of the equipment is designed and calculated and selected, and the working principle and selection principle of the symmetrical weighing system are studied, and the modeling and analysis of the weighing and metering operation process in the microprocessor are carried out.The calibration method of weighing system is put forward.Marshall specimens were formed by four kinds of indoor mixing processes under different adding order and mixing time of slow-release anti-ice materials. The low temperature crack resistance, water stability and high temperature stability of four kinds of specimens were verified.Compare the test results to determine the best indoor mixing process.With reference to the mixing order and mixing time of indoor materials, a mathematical model of the minimum number of revolutions needed for the uniform mixing of slow-release and anti-ice asphalt mixture is established, and the mixing time and material addition order of the slow-release ice-proof asphalt mixture produced in the field mixing station are determined.In this paper, the output of mixing station, paver, transport vehicle and road roller in construction of Shibai high-speed bridge deck are calculated according to the theory of equipment matching based on Shibai high-speed slow-release anti-ice asphalt pavement engineering.The process of mixing, spreading and rolling is studied, and a set of construction technology of slow-release and anti-ice asphalt pavement is formed.By tracking and testing the quality of pavement construction, it is proved that the performance of slow-release ice-proof asphalt pavement is good and the effect of ice icing inhibition is obvious.
【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

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