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Adaptive Neuro-Fuzzy Inference System-Based Backcalculation Approach To Airport Pavement Structural Analysis, Kasthurirangan Gopalakrishnan, Halil Ceylan 2017 Iowa State University

Adaptive Neuro-Fuzzy Inference System-Based Backcalculation Approach To Airport Pavement Structural Analysis, Kasthurirangan Gopalakrishnan, Halil Ceylan

Halil Ceylan

This paper describes the application of adaptive neuro-fuzzy inference system (ANFIS) methodology for the backcalculation of airport flexible pavement layer moduli. The proposed ANFIS-based backcalculation approach employs a hybrid learning procedure to construct a non-linear input-output mapping based on qualitative aspects of human knowledge and pavement engineering experience incorporated in the form of fuzzy if-then rules as well as synthetically generated Finite Element (FE) based pavement modeling solutions in the form of input-output data pairs. The developed neuro-fuzzy backcalculation methodology was evaluated using hypothetical data as well as extensive non-destructive field deflection data acquired from a state-of-the-art full-scale airport pavement ...


Comparative Performance Of Concrete Pavements With Recycled Concrete Aggregate (Rca) And Virgin Aggregate Subbases, Sunghwan Kim, Halil Ceylan, Kasthurirangan Gopalakrishnan, David J. White, Charles T. Jahren, Thang Huu Phan 2017 Iowa State University

Comparative Performance Of Concrete Pavements With Recycled Concrete Aggregate (Rca) And Virgin Aggregate Subbases, Sunghwan Kim, Halil Ceylan, Kasthurirangan Gopalakrishnan, David J. White, Charles T. Jahren, Thang Huu Phan

Halil Ceylan

Using recycled concrete aggregate (RCA) as base/subbase for road construction is alternative way to manage construction waste and reduces the need for virgin aggregates. This paper discusses the long-term performance of concrete pavements on RCA granular layer in comparison to concrete pavements on virgin aggregate granular layer. 18 representative RCA pavement sections across Iowa were primary selected considering state wide location and pavement age. Detailed visual distress surveys were conducted to identify the current pavement surface condition information and the primary distress on RCA granular layer pavement. The pavement information data for the surveyed RCA subbase sections and the ...


Application Of Shuffled Complex Evolution Optimization Approach To Concrete Pavement Backanalysis, Kasthurirangan Gopalakrishnan, Halil Ceylan 2017 Iowa State University

Application Of Shuffled Complex Evolution Optimization Approach To Concrete Pavement Backanalysis, Kasthurirangan Gopalakrishnan, Halil Ceylan

Halil Ceylan

This paper focuses on the development of a new backcalculation method for concrete pavements based on a hybrid evolutionary global optimization algorithm, namely Shuffled Complex Evolution (SCE). Evolutionary optimization algorithms are ideally suited for intrinsically multi-modal, non-convex, and discontinuous real-world problems such as pavement backcalculation because of their ability to explore very large and complex search spaces and locate the globally optimal solution using a parallel search mechanism as opposed to a point-by-point search mechanism employed by traditional optimization algorithms. Shuffled Complex Evolution (SCE), a type of evolutionary optimization algorithms based on the tradeoff of exploration and exploitation, has been ...


A Predictive Model For Uniaxial Compressive Strength Of Carbonate Rocks From Schmidt Hardness, Murat Yurdakul, Halil Ceylan, Hurriyet Akdas 2017 Iowa State University

A Predictive Model For Uniaxial Compressive Strength Of Carbonate Rocks From Schmidt Hardness, Murat Yurdakul, Halil Ceylan, Hurriyet Akdas

Halil Ceylan

Uniaxial compressive strength (UCS) is considered to be one of the important parameters in rock engineering projects. In order to determine UCS, direct and indirect techniques are employed. In the direct approach, UCS is determined from the laboratory UCS test. In indirect techniques determine UCS based on the nondestructive test findings which can be easily and quickly performed and require relatively simple or no sample preparation. Indirect techniques are commonly preferred by rock and mining engineers because of their low cost and ease. This study presents the findings of an Artificial Neural Networks (ANN) based model for the prediction of ...


Mepdg Work Plan Task No. 8: Validation Of Pavement Performance Curves For The Mechanistic-Empirical Pavement Design Guide, Halil Ceylan, Sunghwan Kim, Kasthurirangan Gopalakrishnan, Omar G. Smadi 2017 Iowa State University

Mepdg Work Plan Task No. 8: Validation Of Pavement Performance Curves For The Mechanistic-Empirical Pavement Design Guide, Halil Ceylan, Sunghwan Kim, Kasthurirangan Gopalakrishnan, Omar G. Smadi

Halil Ceylan

The objective of this research is to determine whether the nationally calibrated performance models used in the Mechanistic-Empirical Pavement Design Guide (MEPDG) provide a reasonable prediction of actual field performance, and if the desired accuracy or correspondence exists between predicted and monitored performance for Iowa conditions. A comprehensive literature review was conducted to identify the MEPDG input parameters and the MEPDG verification/calibration process. Sensitivities of MEPDG input parameters to predictions were studied using different versions of the MEPDG software. Based on literature review and sensitivity analysis, a detailed verification procedure was developed. A total of sixteen different types of ...


Non-Destructive Evaluation Of Iowa Pavements Phase 2: Development Of A Fully Automated Software System For Rapid Analysis/Processing Of The Falling Weight Deflectometer Data, Halil Ceylan, Kasthurirangan Gopalakrishnan, Sunghwan Kim, Alper Guclu, M. Birkan Bayrak 2017 Iowa State University

Non-Destructive Evaluation Of Iowa Pavements Phase 2: Development Of A Fully Automated Software System For Rapid Analysis/Processing Of The Falling Weight Deflectometer Data, Halil Ceylan, Kasthurirangan Gopalakrishnan, Sunghwan Kim, Alper Guclu, M. Birkan Bayrak

Halil Ceylan

The Office of Special Investigations at Iowa Department of Transportation (DOT) collects FWD data on regular basis to evaluate pavement structural conditions. The primary objective of this study was to develop a fully-automated software system for rapid processing of the FWD data along with a user manual. The software system automatically reads the FWD raw data collected by the JILS-20 type FWD machine that Iowa DOT owns, processes and analyzes the collected data with the rapid prediction algorithms developed during the phase I study. This system smoothly integrates the FWD data analysis algorithms and the computer program being used to ...


Investigation Of Electromagnetic Gauges For Determining In-Place Hma Density, Andrea N. Kvasnak, R. Christopher Williams, Halil Ceylan, Kasthurirangan Gopalakrishnan 2017 Iowa State University

Investigation Of Electromagnetic Gauges For Determining In-Place Hma Density, Andrea N. Kvasnak, R. Christopher Williams, Halil Ceylan, Kasthurirangan Gopalakrishnan

Halil Ceylan

Density is an important component of hot-mix asphalt (HMA) pavement quality and long-term performance. Insufficient density of an in-place HMA pavement is the most frequently cited construction-related performance problem.

This study evaluated the use of electromagnetic gauges to nondestructively determine densities. Field and laboratory measurements were taken with two electromagnetic gauges—a PaveTracker and a Pavement Quality Indicator (PQI). Test data were collected in the field during and after paving operations and also in a laboratory on field mixes compacted in the lab.

This study revealed that several mix- and project-specific factors affect electromagnetic gauge readings. Consequently, the implementation of ...


Nondestructive Testing To Identify Delaminations Between Hma Layers, Volume 3 - Controlled Evaluation Reports, Michael Heitzman, Kenneth Maser, Nam H. Tran, Ray Brown, Haley Bell, Stephen D. Holland, Halil Ceylan, Kimberly Belli, Dennis Hiltunen 2017 National Center for Asphalt Technology at Auburn University

Nondestructive Testing To Identify Delaminations Between Hma Layers, Volume 3 - Controlled Evaluation Reports, Michael Heitzman, Kenneth Maser, Nam H. Tran, Ray Brown, Haley Bell, Stephen D. Holland, Halil Ceylan, Kimberly Belli, Dennis Hiltunen

Halil Ceylan

Asphalt pavements with delamination problems experience considerable early damage because delaminations provide paths for moisture damage and the development of damage such as stripping, slippage cracks, and pavement deformation. Early detection of the existence, extent, and depth of delaminations in asphalt pavements is key for determining the appropriate rehabilitation strategy and thus extending the life of the given pavement.


Nondestructive Testing To Identify Delaminations Between Hma Layers, Volume 4 - Uncontrolled Evaluation Reports, Michael Heitzman, Kenneth Maser, Nam H. Tran, Ray Brown, Haley Bell, Steve Holland, Halil Ceylan, Kimberly Belli, Dennis Hiltunen 2017 National Center for Asphalt Technology at Auburn University

Nondestructive Testing To Identify Delaminations Between Hma Layers, Volume 4 - Uncontrolled Evaluation Reports, Michael Heitzman, Kenneth Maser, Nam H. Tran, Ray Brown, Haley Bell, Steve Holland, Halil Ceylan, Kimberly Belli, Dennis Hiltunen

Halil Ceylan

Asphalt pavements with delamination problems experience considerable early damage because delaminations provide paths for moisture damage and the development of damage such as stripping, slippage cracks, and pavement deformation. Early detection of the existence, extent, and depth of delaminations in asphalt pavements is key for determining the appropriate rehabilitation strategy and thus extending the life of the given pavement.


Nondestructive Testing To Identify Delaminations Between Hma Layers Volume 1-Summary, Michael Heitzman, Kenneth Maser, Nam H. Tran, Ray Brown, Haley Bell, Stephen D. Holland, Halil Ceylan, Kimberly Belli, Dennis Hiltunen 2017 National Center for Asphalt Technology at Auburn University

Nondestructive Testing To Identify Delaminations Between Hma Layers Volume 1-Summary, Michael Heitzman, Kenneth Maser, Nam H. Tran, Ray Brown, Haley Bell, Stephen D. Holland, Halil Ceylan, Kimberly Belli, Dennis Hiltunen

Halil Ceylan

Several types of pavement surface distress can be attributed to delamination between hot-mix asphalt (HMA) layers. Longitudinal cracking in the wheel path and tearing in the surface are two common types of visual distress that are caused by delamination between layers. HMA delamination is primarily due to layer debonding or stripping. Debonding occurs when there is improper tack between paved HMA layers or between an HMA overlay and concrete pavement. Stripping develops when the aggregates and asphalt binder are incompatible, adhesion is lost, and water separates the asphalt binder from the aggregate. These conditions that cause pavement distress cannot be ...


Me Design Approach For Hma Overlaid Pcc Pavements, Halil Ceylan, Reshma Mathews, Tejeswi Kota, Kasthurirangan Gopalakrishnan, Brian Coree 2017 Iowa State University

Me Design Approach For Hma Overlaid Pcc Pavements, Halil Ceylan, Reshma Mathews, Tejeswi Kota, Kasthurirangan Gopalakrishnan, Brian Coree

Halil Ceylan

Highway pavements of portland cement concrete (PCC) type usually deteriorate due to distresses caused by a combination of traffic loads and weather conditions. The need for repair or rehabilitation depends on the type and level of distress. Repair and rehabilitation activities are carried out to extend the service life of the existing pavements. As total reconstruction is very expensive and time-consuming, rehabilitation is frequently considered to be a better alternative.


Investigation Of Aashtoware Pavement Me Design/Darwinme Performance Prediction Models For Iowa Pavement Analysis And Design, Halil Ceylan, Kasthurirangan Gopalakrishnan, Sunghwan Kim 2017 Iowa State University

Investigation Of Aashtoware Pavement Me Design/Darwinme Performance Prediction Models For Iowa Pavement Analysis And Design, Halil Ceylan, Kasthurirangan Gopalakrishnan, Sunghwan Kim

Halil Ceylan

The Mechanistic-Empirical Pavement Design Guide (MEPDG) was developed under National Cooperative Highway Research Program (NCHRP) Project 1-37A as a novel mechanistic-empirical procedure for the analysis and design of pavements. The MEPDG, published in 2008, was subsequently supported by AASHTO’s DARWin-ME pavement design software (starting in April 2011) and AASHTOWare Pavement ME Design was the next generation of pavement design software (as of February 2013).


Machine-Vision-Based Roadway Health Monitoring And Assessment: Development Of A Shape-Based Pavement-Crack-Detection Approach, Teng Wang, Kasthurirangan Gopalakrishnan, Arun K. Somani, Omar G. Smadi, Halil Ceylan 2017 Iowa State University

Machine-Vision-Based Roadway Health Monitoring And Assessment: Development Of A Shape-Based Pavement-Crack-Detection Approach, Teng Wang, Kasthurirangan Gopalakrishnan, Arun K. Somani, Omar G. Smadi, Halil Ceylan

Halil Ceylan

State highway agencies (SHAs) routinely employ semi-automated and automated image-based methods for network-level pavement-cracking data collection, and there are different types of pavement-cracking data collected by SHAs for reporting and management purposes. The main objective of this proof-of-concept research was to develop a shape-based pavement-crack-detection approach for the reliable detection and classification of cracks from acquired two-dimensional (2D) concrete and asphalt pavement surface images. The developed pavement-crack-detection algorithm consists of four stages: local filtering, maximum component extraction, polynomial fitting of possible crack pixels, and shape metric computation and filtering. After completing the crack-detection process, the width of each crack segment ...


Mepdg Work Plan Task No. 5: Characterization Of Unbound Materials (Soils/Aggregates) For Mechanistic-Empirical Pavement Design Guide, Halil Ceylan, Kasthurirangan Gopalakrishnan, Sunghwan Kim 2017 Iowa State University

Mepdg Work Plan Task No. 5: Characterization Of Unbound Materials (Soils/Aggregates) For Mechanistic-Empirical Pavement Design Guide, Halil Ceylan, Kasthurirangan Gopalakrishnan, Sunghwan Kim

Halil Ceylan

The resilient modulus (MR) input parameters in the Mechanistic-Empirical Pavement Design Guide (MEPDG) program have a significant effect on the projected pavement performance. The MEPDG program uses three different levels of inputs depending on the desired level of accuracy. The primary objective of this research was to develop a laboratory testing program utilizing the Iowa DOT servo-hydraulic machine system for evaluating typical Iowa unbound materials and to establish a database of input values for MEPDG analysis. This was achieved by carrying out a detailed laboratory testing program designed in accordance with the AASHTO T307 resilient modulus test protocol using common ...


Implementing The Mechanistic-Empirical Pavement Design Guide: Implementation Plan, Brian Coree, Halil Ceylan, Dale Harrington 2017 Iowa State University

Implementing The Mechanistic-Empirical Pavement Design Guide: Implementation Plan, Brian Coree, Halil Ceylan, Dale Harrington

Halil Ceylan

The current 1993 American Association of State Highway and Transportation Officials (AASHTO) Pavement Design Guide is based on the empirical interpretation of the results of the 1960 AASHTO Road Test. With the release of the new Mechanistic-Empirical (M-E) Pavement Design Guide, pavement design has taken a “quantum” leap forward.

In order to effectively and efficiently transition to the M-E Pavement Design Guide, state DOTs need a detailed implementation and training strategy. This document is a plan for the M-E Pavement Design Guide to be implemented in Iowa.


Nondestructive Evaluation Of Iowa Pavements-Phase I, Halil Ceylan, Alper Guclu, Mustafa Birkan Bayrak, Kasthurirangan Gopalakrishnan 2017 Iowa State University

Nondestructive Evaluation Of Iowa Pavements-Phase I, Halil Ceylan, Alper Guclu, Mustafa Birkan Bayrak, Kasthurirangan Gopalakrishnan

Halil Ceylan

Evaluating structural conditions of existing, in-service pavements is a part of the routine maintenance and rehabilitation activities undertaken by the most departments of transportation (DOTs). In the field, the pavement deflection profiles (or basins) gathered from the nondestructive falling weight deflectometer (FWD) test data are typically used to evaluate pavement structural conditions. Over the past decade, interest has increased in a new class of computational intelligence system, known as artificial neural networks (ANNs), for use in geomechanical and pavement systems applications. This report describes the development and use of ANN models as pavement structural analysis tools for the rapid and ...


Mepdg Work Plan Task No. 7: Existing Pavement Input Information For The Mechanistic-Empirical Pavement Design Guide, Halil Ceylan, Kasthurirangan Gopalakrishnan, Sunghwan Kim, Omar G. Smadi 2017 Iowa State University

Mepdg Work Plan Task No. 7: Existing Pavement Input Information For The Mechanistic-Empirical Pavement Design Guide, Halil Ceylan, Kasthurirangan Gopalakrishnan, Sunghwan Kim, Omar G. Smadi

Halil Ceylan

The objective of this study is to systematically evaluate the Iowa Department of Transportation’s (DOT’s) existing Pavement Management Information System (PMIS) with respect to the input information required for Mechanistic-Empirical Pavement Design Guide (MEPDG) rehabilitation analysis and design. To accomplish this objective, all of available PMIS data for interstate and primary roads in Iowa were retrieved from the Iowa DOT PMIS. The retrieved data were evaluated with respect to the input requirements and outputs for the latest version of the MEPDG software (version 1.0). The input parameters that are required for MEPDG HMA rehabilitation design, but currently ...


Mechanistic-Empirical Pavement Design Guide: Technical Report, Halil Ceylan, Brian Coree, Dale Harrington 2017 Iowa State University

Mechanistic-Empirical Pavement Design Guide: Technical Report, Halil Ceylan, Brian Coree, Dale Harrington

Halil Ceylan

With the release of the new Mechanistic-Empirical Pavement Design Guide (MEPDG), pavement design has taken a “quantum” leap forward. The current 1993 design guide is solidly based on the empirical interpretation of the results of the 1960 American Association of State Highway and Transportation Officials (AASHTO) Road Test. This report seeks to outline the technical aspects of the new MEPDG. Full detail is essentially impossible and impractical, since the release of the MEPDG was accompanied by eighteen volumes of technical justification and background. Consequently, this report seeks only to provide a potential user with a practical understanding of the workings ...


Nondestructive Testing To Identify Delaminations Between Hma Layers Volume 2-Theoretical Models, Michael Heitzman, Kenneth Maser, Nam H. Tran, Ray Brown, Haley Bell, Stephen D. Holland, Halil Ceylan, Kimberly Belli, Dennis Hiltunen 2017 National Center for Asphalt Technology at Auburn University

Nondestructive Testing To Identify Delaminations Between Hma Layers Volume 2-Theoretical Models, Michael Heitzman, Kenneth Maser, Nam H. Tran, Ray Brown, Haley Bell, Stephen D. Holland, Halil Ceylan, Kimberly Belli, Dennis Hiltunen

Halil Ceylan

Asphalt pavements with delamination problems experience considerable early damage because delaminations provide paths for moisture damage and the development of damage such as stripping, slippage cracks, and pavement deformation. Early detection of the existence, extent, and depth of delaminations in asphalt pavements is key for determining the appropriate rehabilitation strategy and thus extending the life of the given pavement.


Nondestructive Testing To Identify Delaminations Between Hma Layers, Volume 5 - Field Core Verification, Michael Heitzman, Kenneth Maser, Nam H. Tran, Ray Brown, Haley Bell, Steve Holland, Halil Ceylan, Kimberly Belli, Dennis Hiltunen 2017 National Center for Asphalt Technology at Auburn University

Nondestructive Testing To Identify Delaminations Between Hma Layers, Volume 5 - Field Core Verification, Michael Heitzman, Kenneth Maser, Nam H. Tran, Ray Brown, Haley Bell, Steve Holland, Halil Ceylan, Kimberly Belli, Dennis Hiltunen

Halil Ceylan

Asphalt pavements with delamination problems experience considerable early damage because delaminations provide paths for moisture damage and the development of damage such as stripping, slippage cracks, and pavement deformation. Early detection of the existence, extent, and depth of delaminations in asphalt pavements is key for determining the appropriate rehabilitation strategy and thus extending the life of the given pavement.


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