Based on the sensitivity results, the input parameters were ranked and categorized from those to which pavement performance is most sensitive to least sensitive (or insensitive). In addition, the binder grade was varied for the flexible pavements. The input parameters that were varied included traffic variables and pavement structure for selected rigid and flexible pavements. It also included smoothness, longitudinal cracking, alligator cracking, transverse cracking, and permanent deformation for flexible pavements. Pavement performance included specifically faulting, transverse cracking, and smoothness for rigid pavements.
CONCRETE PAVEMENT DESIGN AASHTO SOFTWARE
The sensitivity analyses were conducted using the Mechanistic-Empirical Pavement Design Guide software (version 8.1). This report is focused on using the American Association of State Highway and Transportation Officials (AASHTO) M-E Design Guide (MEPDG) to show the results of quantitative sensitivity analyses of typical pavement structures (rigid and flexible pavements) to highlight the main factors that affect pavement performance in terms of critical distresses and smoothness.
CONCRETE PAVEMENT DESIGN AASHTO PROFESSIONAL
He has served as an associate editor for the American Society of Civil Engineers' (ASCE) Journal of Materials in Civil Engineering since 2008. He has been involved in professional services for many professional organizations including ASCE (Chair of Mechanics of Pavements Committee and Chair of Bituminous Materials Committee), the Transportation Research Board (TRB), Association of Asphalt Paving Technologists (AAPT), International Society of Asphalt Pavements (ISAP), American Association for the Advancement of Science (AAAS), and International Union of Laboratories and Experts in Construction Materials, Systems and Structures (RILEM).Optimization of transportation facilities for capacity and pavement condition could be achieved with mechanistic analysis of pavement structures. Professor You has published over 300 papers in journals and conference proceedings. EPA), Michigan Department of Environmental Quality (MDEQ), Federal Highway Administration, Michigan Department of Transportation (MDOT), Minnesota Department of Transportation (MnDOT), and Texas Department of Transportation (TxDOT). Sponsors of his research program include: National Science Foundation (NSF), U.S.
He has over 20 years of practical and research experience with pavements engineering and materials including completed research projects on a wide range of subjects including pavement materials and pavement design, sustainable materials and micromechanics based models for pavement materials. Zhanping You earned his PhD in civil engineering from the University of Illinois at Urbana-Champaign in 2003.
In addition, the reasons that give them the superior performance in wet-freeze climates are discussed in detail.ĭr. Three design methods and five materials have been identified, and examples of their successful performance in wet-freeze climates are provided. However, utilizing appropriate techniques and materials could potentially improve the quality and increase the service life of the concrete pavement. Failure to take into account the climatic conditions may lead to inadequate or reduced pavement performance. Therefore, appropriate procedures for design and material selection need to be selected to withstand high precipitation and freezing winter temperatures. Wet-freeze climates can result in various concrete pavement distress mechanisms such as thermally-induced cracking, freeze-thaw deterioration, accelerated cracking due to loss of support, frost heave, and material degradation. The local wet-freeze climate makes the requirements for Michigan's pavement system different from many other regions. For the purposes of this paper, a best practice is a procedure that has been shown by field-validated research or experience to produce improved results and that is established or proposed as a standard suitable for widespread implementation. The research presented in this paper aims to identify best practices of design and materials for concrete pavements in wet-freeze climates similar to the Michigan State.
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