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Showing 1 to 18 of 18 for “"flexible pavement design"”.
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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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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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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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Evaluation of asphalt stabilized layer equivalency factors for use in airfield flexible pavement design
A California Bearing Ratio (CBR) design method has been used for Air Force airfield pavement design since the late 1920s. The procedures, calculations, and related nomographs have been updated to reflect developments in the pavement design, pavement analysis, and unique landing gear configurations …
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Flexible pavement design for a mixture of human-driven and connected and autonomous trucks
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-15 without embargo terms
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Evaluation and modeling of repeated load test data of asphalt concrete for mechanistic-empirical flexible pavement design
<p>The Mechanistic-Empirical Pavement Design Guide (MEPDG) uses a power model that incorporates Dynamic Modulus (DM) as a factor in predicting rutting performance of asphalt concrete. The rutting model is empirical and the rutting profiles obtained from the model are largely based on the adjustment …
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Development of Mechanistic Flexible Pavement Design Concepts for the Heavyweight F-15 Aircraft (Airfield, Computer Design, Cbr, Algorithms)
… F-15 will become the controlling aircraft for design of airfield Light-Load Pavements. A review is presented of the concepts and development of the present Department of Defense (DOD) method for flexible airfield pavement design.
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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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Cálculo de cargas de roda equivalente no dimensionamento de pavimentos flexíveis: programação automática
A study of flexible pavement design for airports, consisting of two main parts: 1) Historical Review of the California Bearing Ratio (CBR) Method, since its origin in 1928, describing work related to equivalent wheel load and the present criterium for its determination. 2) A computer program for …
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Effectivess of Using Geotextiles in Flexible Pavements: Life-Cycle Cost Analysis
… benefits of using geotextile in secondary road flexible pavement. In this study, a comprehensive life cycle cost analysis framework was developed and used to quantify the initial and the future cost of 25 representative design alternatives. A 50 year analysis cycle was used to compute the …
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Pavement thickness design using reclaimed hydrated Iowa class C fly ash as a base material
The purpose of this study is to develop a pavement thickness design method using reclaimed hydrated class C fly ash as a base material. Reclaimed fly ash from four Iowa sources was investigated, in an untreated state as well as stabilized with lime and raw fly ash. Standard tests, including proctor …
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Analysis of Hot Mix Asphalt (HMA) Linear Viscoelastic and Bimodular Properties Using Uniaxial Compression and Indirect Tension (IDT) Tests
… (HMA) input for mechanistic-empirical (M-E) flexible pavement design is the dynamic complex modulus obtained from either the uniaxial or triaxial compressive dynamic modulus test. Furthermore, as part of the performance-based mix design process, the triaxial dynamic modulus has been selected …
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Laboratory Performance of Geosynthetic-Stabilized Pavement Sections
… to evaluate the comparative performance of pavements with and without geosynthetic stabilization. This was accomplished by the testing of a total of 18 pavement sections which could be classified into four different types: one which was constructed without geosynthetics and which served as a …
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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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Mechanistic-Empirical Pavement Design Procedure For Geosynthetically Stabilized Flexible Pavements
In June 1994, a 150-m-long secondary road pavement section was built as part of the realignment of route 616 and 757 in Bedford County, Virginia to evaluate the performance of geosynthetically stabilized flexible pavements. The California Bearing Ratio (CBR) of the subgrade after construction was …
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Performance of Silty Sands and their Use in Flexible Airfield Pavement Design
Traditionally, flexible pavement design relies on past experience and semi-empirical methods developed through a combination of element testing and modelling. Element testing in this area especially, has centred on the performance of clean sands. This is in conflict with actual practice where a …
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DEVELOPMENT OF NEW COLD BITUMEN EMULSION MIXTURES AND FINITE ELEMENT MODELLING OF PREDICTING PERMANENT DEFORMATION
… needs to be paid to building more sustainable flexible pavements. Cold bitumen emulsion mixture (CBEM) as an increasingly attractive cold asphalt mixture is therefore becoming an important subject area for study. Despite the efforts applied during the last few decades to enhance and develop …