土木工程专业外文论文——多孔沥青路面设计：寒冷气候使用的主动

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Porous Asphalt Pavement Designs: Proactive Design for Cold Climate UsebyLori Kathryn SchausA thesis presented to the University of Waterloo in fulfillment of the thesis requirement for the degree of Master of Applied Science in Civil EngineeringWaterloo, Ontario, Canada, 2007© Lori Kathryn Schaus 2007

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AUTHOR'S DECLARATIONI hereby declare that I am the sole author of this thesis. This is a true copy of the thesis, including any required final revisions, as accepted by my examiners. I understand that my thesis may be made electronically available to the public.ii

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AbstractPorous asphalt pavements offer an alternative technology for stormwater management. A porous asphalt pavement differs from traditional asphalt pavement designs in that the structure permits fluids to pass freely through it, reducing or controlling the amount of run-off from the surrounding area. By allowing precipitation and run-off to flow through the structure, this pavement type functions as an additional stormwater management technique. The overall benefits of porous asphalt pavements may include both environmental and safety benefits including improved stormwater management, improved skid resistance, reduction of spray to drivers and pedestrians, as well as a potential for noise reduction. With increasing environmental awareness and an evolving paradigm shift in stormwater management techniques, this research aims to provide guidance for Canadian engineers, contractors, and government agencies on the design of porous asphalt pavement structures. One of the keys to the success of this pavement type is in the design of the asphalt mix. The air void percentage, which is ultimately related to the effectiveness of the pavement to adequately control the runoff, is a critical component of the mix. However, special consideration is required in order to obtain higher air void percentages while maintaining strength and durability within a cold climate. The objectives of this study were to evaluate several laboratory porous asphalt mix designs for durability and strength in cold climate conditions. The porous asphalt mixes consisted of a porous asphalt Superpave mix design method whereby the asphalt binder type was varied. Performance testing of the porous asphalt including draindown susceptibility, moisture-induced damage susceptibility, dynamic modulus, and permeability testing were completed. Based on the preliminary laboratory results, an optimal porous asphalt mix was recommended for use in a Canadian climate. Initial design guidelines for porous asphalt were provided based on preliminary findings and hydrological analysis.iii

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AcknowledgementsI would like to thank the Natural Sciences and Engineering Research Council of Canada and Golder Associates Ltd for funding this research. With the utmost gratitude I would like to thank my supervisor Dr. Susan Tighe from the Department of Civil and Environmental Engineering at the University of Waterloo, as well as Dr. Ludomir Uzarowski from Golder Associates Ltd for their guidance and encouragement throughout my research. I would also like to thank McAsphalt, Bitumar Inc, Gazzola Paving, Pave-Al, and The Miller Group for their generous material donations. Several industry professional and colleagues assisted me with this research and I would like to extend my gratitude to them: Mr. John Watkins and Mr. Jeremy Rose from Golder Associates Ltd for their guidance and assistance, Mr. Michael Esenwa from Lafarge North America, and Miss Jodi Norris, Mr. James Smith, Miss Vimy Henderson, and Miss Rabiah Rizvi for their countless hours of assistance in the CPATT laboratory at the University of Waterloo. Finally, last but not least, I would like to thank my family for supporting me throughout the years as I furthered my academic and professional career. I would like to also thank Jeffrey Dobbin for his amazing love and support throughout this entire period in my life.iv

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Table of ContentsAUTHOR'S DECLARATION ................................................................................................... ii Abstract .................................................................................................................................. iii Acknowledgements ................................................................................................................ iv Table of Contents.................................................................................................................... v List of Figures........................................................................................................................viii List of Tables.......................................................................................................................... ix Chapter 1 Introduction.............................................................................................................1 1.1 Background ...................................................................................................................1 1.2 Purpose/Motivation........................................................................................................2 1.3 Scope and Objectives....................................................................................................2 1.4 Methodology ..................................................................................................................3 1.5 Organization of Thesis...................................................................................................4 Chapter 2 Literature Review ...................................................................................................5 2.1 Introduction............................................................................................ …… 此处隐藏：27098字，全部文档内容请下载后查看。喜欢就下载吧 ……