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Showing 1 to 20 of 72 for “"Flexible pavement"”.
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Effects of basecourse saturation on flexible pavement performance.
… basecourse may lead to the premature failure of flexible asphalt pavements. Basecourse saturation results in increased flexural strains in the asphaltic layer and increased rutting leading to cracking of the surface layer. To obtain a physical and quantitative understanding of the deformation …
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In-Situ Behavior of Geosynthetically Stabilized Flexible Pavement
… beneath a granular base, or subbase in a flexible pavement system is to prevent the road aggregate and the underlying subgrade from intermixing. It has been hypothesized that in the absence of a geotextile, intermixing between base course aggregate and soft subgrade occurs. Nine heavily …
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Flexible Pavement Rut Depth Modeling For Different Climate Zones
<p>Pavement rutting is one of the most important types of pavement distress that affect road safety and ride quality. Therefore, the primary objective of this study was to develop pavement rutting empirical models for different climate zones to predict pavement rutting on granular base based on …
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Dynamic Loading of Soil-Cement for Flexible Pavement Design
Stabilised soil-cement has been used in road pavements for considerable time. Certain design criteria concerning the properties of the material have been established. However, there is little knowledge of the material's behaviour under dynamic loading conditions simulating traffic loads. The aim of …
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Resilient Based Flexible Pavement Design Procedure for Secondary Roads
Made available in DSpace on 2014-12-13T19:31:55Z (GMT). No. of bitstreams: 1 8004168.pdf: 12162061 bytes, checksum: 7820907993158ebd167f6192ff9a6e19 (MD5) Previous issue date: 1979
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Flexible pavement analysis using physics-informed machine learning methods
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-12-01
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Evaluation of subgrade strength and flexible pavement designs for reliability
Reliability is an important factor in flexible pavement design to consider the variability associated with the design inputs. In this study, subgrade strength variability and flexible pavement designs are evaluated for reliability. The effects of weak subgrade on pavement design and performance …
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Moisture effects on the mechanical behavior of flexible pavement subgrades
<p>All pavement materials contain moisture in various forms and amounts. The effects of moisture on the mechanical behavior of these materials vary from small for some bound materials to very significant for some fine grained soils. Moisture effects become critical particularly during the spring …
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Mechanistic-Empirical Evaluation of Mn/ROAD Mainline Flexible Pavement Sections
… of this study was to use Mn/ROAD mainline flexible pavement data to verify, refine, and modify the Illinois Department of Transportation (IDOT) Mechanistic-Empirical (M-E) based flexible pavement design procedures and concepts. Illinois has used M-E design procedures for the design of …
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Flexible pavement systems : an analysis of the structural subsystem's deterioration.
Thesis: M.S., Massachusetts Institute of Technology, Department of Civil Engineering, 1975
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Flexible Pavement Dynamic Response Analysis and Validation for Various Tire Configurations
Flexible pavement responses to vehicular loading such as critical stresses and strains, in each pavement layer, could be predicted by the multilayered elastic analysis. However, most of conventional approaches suffer from major drawbacks including material properties considered in the analysis, and …
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Characterizing Aircraft Multiple Wheel Load Interaction for Airport Flexible Pavement Design
"Procedure 2 (""Engineering Approach""). Average Layer Moduli values obtained from SW non-linear axisymmetric FE analysis are input into an ELP to solve responses for the MW assembly."
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Permanent Deformation Behavior of Airport Flexible Pavement Base and Subbase Courses
… Administration's (FAA's) National Airport Pavement Test Facility (NAPTF) was completed, significant rutting was found to take place in the flexible pavement test sections in the granular base and subbase layers, designated as NAPTF P209/P154 base and subbase according to FAA's construction …
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Moisture Content Determination and Temperature Profile Modeling of Flexible Pavement Structures
… a granular base material. The strength of this pavement system is strongly influenced by the local environmental conditions. Excessive moisture in a granular base layer can cause that layer to lose its structural contribution by reducing the area over which loading may be distributed. Excessive …
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On Cross-Anisotropy of Flexible Pavement Layer Materials for Improved Pavement Responses
<p>Pavement layer materials are typically assumed to be isotropic in determining pavement responses, such as stress and strain. The main benefit of the isotropic assumption is that stiffness defined by modulus of elasticity (E-value) is equal in all directions. In reality, stiffness along vertical …
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Evaluation of Flexible Pavement Behavior With Emphasis on the Behavior Ofgranular Layers
Made available in DSpace on 2014-12-08T23:57:19Z (GMT). No. of bitstreams: 1 7001004.pdf: 5444232 bytes, checksum: 323963c87e7f931d7f21435071501b5a (MD5) Previous issue date: 1969
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Optimizing asphalt binder chemistry and rheology to control potential flexible pavement cracking
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-12-01
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Network-level maintenance decisions for flexible pavement using a soft computing-based framework
An effective pavement management system (PMS) is one that is guided by a software program that ensures that all pavement sections are maintained at adequately high serviceability levels and structural conditions with a low budget and resource usage, without causing any significant negative effect …
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Implementation of mechanistic-empirical approach for structural design of hydrated lime modified flexible pavement
… and rehabilitation of highway and airport pavements has been recognized for many years. Mechanistic methods are based on the principles of mechanics in contrast to the particular purpose and empirical procedures that are often used.The objective of this study is the development of …
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Three-dimensional finite element modeling as a tool for flexible pavement design and analysis
… modeling for analyzing the performance of flexible pavement. The study is deemed necessary because of the complexity of the landing gears and heavy loads imposed by heavier and bigger aircraft, like the Boeing 747-400, Airbus A380 and Boeing 777.</p> <p>The development of the finite element …
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