橡胶沥青在路面养护工程中的应用技术研究

发布时间：2018-03-06 20:40

  本文选题：橡胶沥青　切入点：路面养护工程　出处：《长安大学》2014年硕士论文　论文类型：学位论文

【摘要】：随着经济和汽车工业的发展，我国的汽车使用量越来越大，而大量的废旧汽车轮胎的处理也成为了一项重要的研究课题。开展橡胶沥青在路面养护工程的应用,能够缓解废旧橡胶轮胎造成环境污染方面压力,同时能够改善路面使用性能,具有重要的经济和社会效益。 本文以橡胶沥青技术在浙江的研究和应用为背景，结合新昌江拔线的工程案例，从橡胶沥青的性能、评价指标，橡胶沥青的配合比设计以及橡胶沥青的生产工艺等几个方面进行了研究。新昌橡胶沥青试验路段橡胶沥青混合料-13（简称：ARAC-13）集料采用玄武岩，同时添加占集料2%的矿粉；ARAC-13配合比设计根据新昌项目特点，结合《橡胶沥青及混合料设计施工技术指南》的要求，采用了断级配密实骨架嵌挤式级配，采用马歇尔击实法（双面各75次），击实温度控制在175～180℃；采用的集料毛体积相对密度2.8，初始油石比采用6.5%，采取双面75次制作马歇尔试件，经过试验确定ARAC-13的最佳油石比为7.0%。 结合新昌江拔线试验路段的铺设应用，并对该路段橡胶沥青混合料的使用情况进行了跟踪检测，为橡胶沥青在路面养护工程中的应用提供了数据和技术支持。通过研究，从试验结果来看，ARAC-13各项体积指标、水稳定性能、高温性能均满足要求。试验结果表明，橡胶沥青混合料回弹模量值要高于SBS改性沥青混合料，，说明橡胶沥青混合料强度要优于SBS改性沥青混合料，抗变形能力更强。
[Abstract]:With the development of economy and automobile industry, more and more cars are used in our country, and the disposal of a large number of used tyres has become an important research subject. It can relieve the pressure of environmental pollution caused by waste rubber tires and improve the pavement performance. It has important economic and social benefits. In this paper, based on the research and application of rubber asphalt technology in Zhejiang Province, combined with the engineering case of Xinchang River drawing line, the performance and evaluation index of rubber asphalt are discussed. The mix ratio design of rubber asphalt and the production technology of rubber asphalt were studied in several aspects. The aggregate of rubber asphalt mixture -13 in Xinchang Rubber Asphalt Test Section was basalt. At the same time, according to the characteristics of Xinchang Project and the requirements of "Technical Guide for Design and Construction of Rubber Asphalt and mixture", the mix proportion design of mineral powder ARAC-13, which accounts for 2% aggregate, is designed by adopting the breaking gradation and compacting compacted skeleton embedded gradation. Marshall compaction method was used (75 times each side, compaction temperature was controlled at 175 ~ 180 鈩

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