Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 62 for “"Mechanistic-Empirical"”.
-
Mechanistic-Empirical Modeling of Permanent Deformation in Asphalt Concrete Layers
Three mechanistic-empirical permanent deformation models were evaluated under Swedish conditions with respect to traffic, climate and materials using accelerated pavement testing and long-term pavement performance studies. The mechanistic-empirical pavement design guide (M E PDG), the …
-
Risk Analysis and Reliability Improvement of Mechanistic-Empirical Pavement Design
<p>Reliability used in the Mechanistic Empirical Pavement Design Guide (MEPDG) is a congregated indicator defined as the probability that each of the key distress types and smoothness will be less than a selected critical level over the design period. For such a complex system as the MEPDG which …
-
Mechanistic-Empirical Evaluation of Mn/ROAD Mainline Flexible Pavement Sections
… 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 full-depth asphalt concrete (FDAC) and conventional flexible pavements (CFP) sections since the late …
-
Mechanistic-Empirical Pavement Design Procedure For Geosynthetically Stabilized Flexible Pavements
… road pavements by 1.5 to 2 times. Finally, a new mechanistic-empirical flexible pavement design method for pavements with and without geosynthetics has been developed. Elasto-viscoelastic material characterization is used to characterize the HMA layer. The field results from Bedford County, …
-
Implementation Of A Mechanistic- Empirical Pavement Design Method For Uruguayan Roadways
Mechanistic-Empirical (M-E) methods are the cornerstone of current pavement engineering practice because of their enhanced predicting capabilities. Such predicting power demands richer input data, computational power, and calibration of the empirical components against distress measurements in the …
-
A Study of the Mechanistic-Empirical Pavement Design Guide for South Carolina
<p>The Mechanistic-Empirical Pavement Design Guide (MEPDG) provides the highway pavement design community with a new program for the design of flexible and rigid pavement structures using state-of-the-art mechanistic-empirical analyses and performance predictions. This report summarizes a research …
-
Development of Mechanistic-Empirical Principles for Jointed Plain Concrete Pavement Fatigue Design
… of material and climatic factors in mechanistic-empirical design methods is fast becoming a necessity. With the wide range of climatic regions in the United States, the inclusion of localized factors can have a profound effect on the observed critical distresses and fatigue life of …
-
Mechanistic-Empirical Evaluation of the Mn/ROAD Low-Volume Road Test Sections
… Illinois Department of Transportation (IDOT) mechanistic-empirical procedures and Mn/ROAD low-volume road (LVR) data and information to verify/refine/modify analysis and design concepts and procedures for LVR flexible pavements. Laboratory test results, field distress measurements, and FWD …
-
Characterization of Ohio Traffic Data for Integration into the Mechanistic-Empirical Pavement Design
The MEPDG requires a multitude of traffic inputs to be defined for the design of pavement structures. These inputs include (a) base-year traffic data such as the initial two-way annual average daily truck traffic (AADTT), (b) traffic volume adjustment factors (directional and lane distribution …
-
Implementation of mechanistic-empirical approach for structural design of hydrated lime modified flexible pavement
The need for improved mechanistic procedures for design, maintenance, 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 …
-
Prediction of permanent deformations in asphalt concrete using the mechanistic-empirical pavement design guide
… prediction and diagnostics of pavements. The Mechanistic-Empirical Pavement Design Guide (M-E PDG) model used for calculation of permanent deformation in asphalt layers was to be evaluated. It was accomplished by accelerated loading testing of two flexible pavements with the Heavy Vehicle …
-
Degradation analyses of empirical inferential predictors for the development of improved dynamic mechanistic/empirical equations
The paper presents an in-depth exploration of a debutaniser distillation column, a critical component in a typical separation train. The primary function of this unit is to separate the upstream distillation column product flow into LPG and a heavier stream of catalytic naphtha. The operation of …
-
Verification of Mechanistic-Empirical Pavement Deterioration Models Based on Field Evaluation of In-Service Pavements
… routes to verify the applicability of the Mechanistic Empirical (M-E) models to high performance pavements in the Commonwealth of Virginia. The structural evaluation included: determination of layer thicknesses (from cores, GPR and historical data), pavement condition assessment based on …
-
Evaluation of climate data sources and investigation of performance prediction models for mechanistic-empirical pavement designs
<p>The Mechanistic-Empirical Pavement Design Guide (MEPDG), a novel procedure for pavement design practice, was developed under National Cooperative Highway Research Program (NCHRP) research study 1-37A. Subsequently, renamed as DarWin-ME in April 2011, and AASHTOWare Pavement ME design (PMED) in …
-
Mechanistic-Empirical Pavement Design Guide (MEPDG) Method Implemented to Estimate Damage in Flexible and Rigid Pavements
<p>The implementation of the Empirical-Mechanistic Pavement Design Guide (MEPDG) method for flexible and rigid pavements requires numerous input parameters. Most of these parameters can be easily determined while some require best estimates that are usually extracted from available literature. This …
-
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 …
-
Concepts for Mechanistic-Empirical Design Procedure for Extended Life Hot Mix Asphalt Pavements With a Multi-Layered Structure
The load pulse duration generated by two FWDs (Dynatest and KUAB) was around 34 milliseconds. There was not a significant difference between the devices. The horizontal tensile strain pulse duration is not affected significantly by the thickness and multi-layered system of the pavements studied.
-
Mechanistic-Empirical Evaluation of Pavement Damage and Cost Attributed to Overweight Single-Trip and Multi-Trip Scenarios in Nevada
The movement of overweight (OW) vehicles has become more common over the years dueto its vital necessity for many important industries such as chemical, oil, defense, etc. UsingOW vehicles reduces the number of vehicles on highways, potentially decreasing trafficcongestion and emissions. However, …
-
Improvement of pavement mechanistic-empirical design (PMED) virtual weather station interpolation model using radial basis function - Tennessee case study
Pavement Mechanistic Empirical Design (PMED) allows users to create Virtual Weather Stations (VWS) in locations where no nearby weather stations exist. VWS quality has faced several critiques through its implementations in PMED. PMED adopts the gravity model in its VWS creation process. MATLAB …
-
Sensitivity analysis and calibration of the alligator cracking model in the mechanistic-empirical pavement design guide using regional data
<p>The models used in the mechanistic-empirical pavement design guide (M-EPDG) were calibrated using the data from all across the United States. The alligator cracking model uses traffic, material and structural data along with local and global calibration factors to calculate the number of axles …
Page 1 of 4