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Development And Evaluation Of A Portable Device For Measuring Curling And Warping In Concrete Pavements, Halil Ceylan, Robert F. Steffes, Kasthurirangan Gopalakrishnan, Sunghwan Kim, Shuo Yang, Kailin Zhuang 2017 Iowa State University

Development And Evaluation Of A Portable Device For Measuring Curling And Warping In Concrete Pavements, Halil Ceylan, Robert F. Steffes, Kasthurirangan Gopalakrishnan, Sunghwan Kim, Shuo Yang, Kailin Zhuang

Halil Ceylan

Portland cement concrete (PCC) pavement undergoes repeated environmental load-related deflection resulting from temperature and moisture variations across pavement depth. This has been recognized as resulting in PCC pavement curling and warping since the mid-1920s. Slab curvature can be further magnified under repeated traffic loads and may ultimately lead to fatigue failures, including top-down and bottom-up transverse, longitudinal, and corner cracking. It is therefore significant to measure the “true” degree of curling and warping in PCC pavements, not only for quality control (QC) and quality assurance (QA) purposes, but also for better understanding of its relationship to long-term pavement performance. Although ...


Fly Ash Soil Stabilization For Non-Uniform Subgrade Soils, David J. White, Halil Ceylan, D. Harrington, Tyson Rupnow 2017 Iowa State University

Fly Ash Soil Stabilization For Non-Uniform Subgrade Soils, David J. White, Halil Ceylan, D. Harrington, Tyson Rupnow

Halil Ceylan

When fly ash production exceeds demand in the construction industry, the material is typically hydrated or conditioned with water and stored on site. The hydrated and conditioned materials can later be reclaimed and used as soil stabilizers or as select fill under pavement structures. Soil treated with self-cementing fly ash is increasingly being used in Iowa to stabilize fine-grained pavement subgrades, but without a complete understanding of the short- and long-term behavior


Fly Ash Soil Stabilization For Non-Uniform Subgrade Soils, David J. White, Halil Ceylan, D. Harrington, Tyson Rupnow 2017 Iowa State University

Fly Ash Soil Stabilization For Non-Uniform Subgrade Soils, David J. White, Halil Ceylan, D. Harrington, Tyson Rupnow

Halil Ceylan

To develop a broader understanding of the engineering properties of fly ash, mixtures of five different soil types (ranging from ML to CH) and several different fly ash sources (including hydrated and conditioned fly ashes from six power plants in Iowa) were evaluated. The evaluation included strength, the influence of curing temperature on strength gain, and the effects of compaction delay time on density and strength gain. Strength and durability testing was conducted using the Iowa State University 2 x 2 apparatus, standard Proctor, and California bearing ratio (CBR) test methods.

The morphology of soil–fly ash mixtures and soil ...


Evaluating Roadway Subsurface Drainage Practices - Phase Ii, Halil Ceylan, Sunghwan Kim, Kasthurirangan Gopalakrishnan, Robert F. Steffes, Bo Yang 2017 Iowa State University

Evaluating Roadway Subsurface Drainage Practices - Phase Ii, Halil Ceylan, Sunghwan Kim, Kasthurirangan Gopalakrishnan, Robert F. Steffes, Bo Yang

Halil Ceylan

Well-performing subsurface drainage systems form an important aspect of pavement design by the Iowa Department of Transportation (DOT). The recently completed Iowa Highway Research Board (IHRB) project TR-643 provided extensive insights into Iowa subsurface drainage practices and pavement subdrain outlet performance. However, the project TR-643 (Phase I) forensic testing and evaluation were carried out in a drought year and during the fall season in 2012. Based on the findings of IHRB Project TR-643, the Iowa DOT requested an expanded Phase II study to address several additional research needs: evaluate the seasonal variation effects (dry fall 2012 versus wet spring/summer ...


Guide For Roller-Compacted Concrete Pavements, Dale Harrington, Fares Abdo, Wayne Adaska, Chetan V. Hazaree, Halil Ceylan, Fatih Bektas 2017 Snyder & Associates

Guide For Roller-Compacted Concrete Pavements, Dale Harrington, Fares Abdo, Wayne Adaska, Chetan V. Hazaree, Halil Ceylan, Fatih Bektas

Halil Ceylan

Roller-compacted concrete (RCC) is an economical, fast-construction candidate for many pavement applications. It has traditionally been used for pavements carrying heavy loads in low-speed areas because of its relatively course surface. However, in recent years its use in commercial areas and for local streets and highways has been increasing. This guide provides owner-agencies, contractors, materials suppliers, and others with a thorough introduction to and updated review of RCC and its many paving applications. Based on current research and best practices, the guide describes RCC and how it works as a paving material, especially compared to concrete pavement, as well as ...


Impact Of Curling And Warping On Concrete Pavement, Halil Ceylan, Kasthurirangan Gopalakrishnan, Sunghwan Kim, Peter Taylor, Ahmad Abdulraheem Alhasan, Shuo Yang 2017 Iowa State University

Impact Of Curling And Warping On Concrete Pavement, Halil Ceylan, Kasthurirangan Gopalakrishnan, Sunghwan Kim, Peter Taylor, Ahmad Abdulraheem Alhasan, Shuo Yang

Halil Ceylan

Portland cement concrete (PCC) pavement undergoes repeated environmental load-related deflection resulting from temperature and moisture variations across the pavement depth. This phenomenon, referred to as PCC pavement curling and warping, has been known and studied since the mid-1920s. Slab curvature can be further magnified under repeated traffic loads and may ultimately lead to fatigue failures, including top-down and bottom-up transverse, longitudinal, and corner cracking. It is therefore important to measure the “true” degree of curling and warping in PCC pavements, not only for quality control (QC) and quality assurance (QA) purposes, but also to achieve a better understanding of its ...


Fly Ash Soil Stabilization For Non-Uniform Subgrade Soils, Volume Ii: Influence Of Subgrade Non-Uniformity On Pcc Pavement Performance, David J. White, Dale Harrington, Halil Ceylan, Tyson Rupnow 2017 Iowa State University

Fly Ash Soil Stabilization For Non-Uniform Subgrade Soils, Volume Ii: Influence Of Subgrade Non-Uniformity On Pcc Pavement Performance, David J. White, Dale Harrington, Halil Ceylan, Tyson Rupnow

Halil Ceylan

To provide insight into subgrade non-uniformity and its effects on pavement performance, this study investigated the influence of non-uniform subgrade support on pavement responses (stress and deflection) that affect pavement performance.

Several reconstructed PCC pavement projects in Iowa were studied to document and evaluate the influence of subgrade/subbase non-uniformity on pavement performance. In situ field tests were performed at 12 sites to determine the subgrade/subbase engineering properties and develop a database of engineering parameter values for statistical and numerical analysis. Results of stiffness, moisture and density, strength, and soil classification were used to determine the spatial variability of ...


Development Of A Wireless Mems Multifunction Sensor System And Field Demonstration Of Embedded Sensors For Monitoring Concrete Pavements, Volume I, Halil Ceylan, Seval Yavas, Liang Dong, Yueyi Jiao, Shuo Yang, Sunghwan Kim, Kasthurirangan Gopalakrishnan, Peter Taylor 2017 Iowa State University

Development Of A Wireless Mems Multifunction Sensor System And Field Demonstration Of Embedded Sensors For Monitoring Concrete Pavements, Volume I, Halil Ceylan, Seval Yavas, Liang Dong, Yueyi Jiao, Shuo Yang, Sunghwan Kim, Kasthurirangan Gopalakrishnan, Peter Taylor

Halil Ceylan

Pavements tend to deteriorate with time under repeated traffic and/or environmental loading. By detecting pavement distresses and damage early enough, it is possible for transportation agencies to develop more effective pavement maintenance and rehabilitation programs and thereby achieve significant cost and time savings. The structural health monitoring (SHM) concept can be considered as a systematic method for assessing the structural state of pavement infrastructure systems and documenting their condition. Over the past several years, this process has traditionally been accomplished through the use of wired sensors embedded in bridge and highway pavement. However, the use of wired sensors has ...


Evaluating Roadway Subsurface Drainage Practices - Phase Ii, Halil Ceylan, Sunghwan Kim, Kasthurirangan Gopalakrishnan, Robert F. Steffes, Bo Yang 2017 Iowa State University

Evaluating Roadway Subsurface Drainage Practices - Phase Ii, Halil Ceylan, Sunghwan Kim, Kasthurirangan Gopalakrishnan, Robert F. Steffes, Bo Yang

Halil Ceylan

Well-performing subsurface drainage systems form an important aspect of pavement design by the Iowa Department of Transportation (DOT). The recently completed Iowa Highway Research Board (IHRB) project TR-643 provided extensive insights into Iowa subsurface drainage practices and pavement subdrain outlet performance. However, the project TR-643 (Phase I) forensic testing and evaluation were carried out in a drought year and during the fall season in 2012. Based on the findings of IHRB Project TR-643, the Iowa DOT requested an expanded Phase II study to address several additional research needs: evaluate the seasonal variation effects (dry fall 2012 versus wet spring/summer ...


Crack Development In Ternary Mix Concrete Utilizing Various Saw Depths, Kejin Wang, Peter Taylor, Halil Ceylan, Jiong Hu, Fatih Bektas 2017 Iowa State University

Crack Development In Ternary Mix Concrete Utilizing Various Saw Depths, Kejin Wang, Peter Taylor, Halil Ceylan, Jiong Hu, Fatih Bektas

Halil Ceylan

Early entry sawing applies sawing earlier and more shallowly than conventional sawing and is believed to increase sawing productivity and reduce the cost of the joint sawing operations. However, some early entry sawing joints (transverse joints) in Iowa were found to experience delayed cracking, sometimes up to 30 days. A concern is whether early entry sawing can lead to late-age random cracking. The present study investigated the effects of different sawing methods on random cracking in portland cement concrete (PCC) pavements. The approach was to assess the cracking potential at sawing joints by measuring the strain development of the concrete ...


Development Of A Wireless Mems Multifunction Sensor System And Field Demonstration Of Embedded Sensors For Monitoring Concrete Pavements, Volume Ii, Halil Ceylan, Peter Taylor, Liang Dong, Seval Yavas, Shuo Yang, Sunghwan Kim, Kasthurirangan Gopalakrishnan, Yueyi Jiao 2017 Iowa State University

Development Of A Wireless Mems Multifunction Sensor System And Field Demonstration Of Embedded Sensors For Monitoring Concrete Pavements, Volume Ii, Halil Ceylan, Peter Taylor, Liang Dong, Seval Yavas, Shuo Yang, Sunghwan Kim, Kasthurirangan Gopalakrishnan, Yueyi Jiao

Halil Ceylan

This two-pronged study evaluated the performance of commercial off-the-shelf (COTS) micro-electromechanical sensors and systems (MEMS) embedded in concrete pavement (Final Report Volume I) and developed a wireless MEMS multifunctional sensor system for health monitoring of pavement systems (Final Report Volume II).

The Volume I report focused on the evaluation of COTS MEMS sensors embedded in concrete pavement sections. The Volume II report covers the set of MEMS sensors that were developed as single-sensing units for measuring moisture, temperature, strain, and pressure. These included the following sensors: (1) nanofiber-based moisture sensors, (2) graphene oxide (GO)–based moisture sensors, (3) flexible graphene ...


Impact Of Curling, Warping, And Other Early-Age Behavior On Concrete Pavement Smoothness: Early, Frequent, And Detailed (Efd) Study, Halil Ceylan, Dennis J. Turner, Robert Otto Rasmussen, George K. Chang, James Grove, Sunghwan Kim, Chintakunta Satish Reddy 2017 Iowa State University

Impact Of Curling, Warping, And Other Early-Age Behavior On Concrete Pavement Smoothness: Early, Frequent, And Detailed (Efd) Study, Halil Ceylan, Dennis J. Turner, Robert Otto Rasmussen, George K. Chang, James Grove, Sunghwan Kim, Chintakunta Satish Reddy

Halil Ceylan

This report summarizes the activities in Phase I of “Assessing the Impact to Concrete Pavement Smoothness from Curling, Warping, and other Early-Age Behavior: Early, Frequent, and Detailed (Project 16).” The purpose of this project is to obtain detailed information about factors affecting pavement smoothness during the critical time immediately following construction by conducting a controlled field evaluation of three concrete pavement construction projects. In Phase I, both field and laboratory testing of the materials and construction process were conducted. Extensive pavement profiling was also performed during strategic times after placement.

As a whole, the data collection effort undertaken by the ...


Development Of Asphalt Dynamic Modulus Master Curve Using Falling Weight Deflectometer Measurements, Tr-659, Kasthurirangan Gopalakrishnan, Sunghwan Kim, Halil Ceylan, Orhan Kaya 2017 Iowa State University

Development Of Asphalt Dynamic Modulus Master Curve Using Falling Weight Deflectometer Measurements, Tr-659, Kasthurirangan Gopalakrishnan, Sunghwan Kim, Halil Ceylan, Orhan Kaya

Halil Ceylan

The asphalt concrete (AC) dynamic modulus (|E*|) is a key design parameter in mechanistic-based pavement design methodologies such as the American Association of State Highway and Transportation Officials (AASHTO) MEPDG/Pavement-ME Design. The objective of this feasibility study was to develop frameworks for predicting the AC |E*| master curve from falling weight deflectometer (FWD) deflection-time history data collected by the Iowa Department of Transportation (Iowa DOT). A neural networks (NN) methodology was developed based on a synthetically generated viscoelastic forward solutions database to predict AC relaxation modulus (E(t)) master curve coefficients from FWD deflection-time history data. According to the ...


Evaluating Roadway Subsurface Drainage Practices, Halil Ceylan, Kasthurirangan Gopalakrishnan, Sunghwan Kim, Robert F. Steffes 2017 Iowa State University

Evaluating Roadway Subsurface Drainage Practices, Halil Ceylan, Kasthurirangan Gopalakrishnan, Sunghwan Kim, Robert F. Steffes

Halil Ceylan

The bearing capacity and service life of a pavement is affected adversely by the presence of undrained water in the pavement layers. In cold winter climates like in Iowa, this problem is magnified further by the risk of frost damage when water is present. Therefore, well-performing subsurface drainage systems form an important aspect of pavement design by the Iowa Department of Transportation (DOT). However, controversial findings are also reported in the literature regarding the benefits of subsurface drainage.

The goal of this research was not to investigate whether subdrains are needed in Iowa pavements, but to conduct an extensive performance ...


Design And Construction Procedures For Concrete Overlay And Widening Of Existing Pavements, James K. Cable, Fouad S. Fanous, Halil Ceylan, Douglas Wood, Daniel Frentress, Toni Raenette Tabbert, Sun-Yoong Oh, Kasthurirangan Gopalakrishnan 2017 Iowa State University

Design And Construction Procedures For Concrete Overlay And Widening Of Existing Pavements, James K. Cable, Fouad S. Fanous, Halil Ceylan, Douglas Wood, Daniel Frentress, Toni Raenette Tabbert, Sun-Yoong Oh, Kasthurirangan Gopalakrishnan

Halil Ceylan

State Highway Departments and local street and road agencies are currently faced with aging highway systems and a need to extend the life of some of the pavements. The agency engineer should have the opportunity to explore the use of multiple surface types in the selection of a preferred rehabilitation strategy. This study was designed to look at the portland cement concrete overlay alternative and especially the design of overlays for existing composite (portland cement and asphaltic cement concrete) pavements.

Existing design procedures for portland cement concrete overlays deal primarily with an existing asphaltic concrete pavement with an underlying granular ...


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 ...


Development Of Asphalt Dynamic Modulus Master Curve Using Falling Weight Deflectometer Measurements, Tr-659, Kasthurirangan Gopalakrishnan, Halil Ceylan, Sunghwan Kim, Orhan Kaya 2017 Iowa State University

Development Of Asphalt Dynamic Modulus Master Curve Using Falling Weight Deflectometer Measurements, Tr-659, Kasthurirangan Gopalakrishnan, Halil Ceylan, Sunghwan Kim, Orhan Kaya

Halil Ceylan

The asphalt concrete (AC) dynamic modulus (|E*|) is a key design parameter in mechanistic-based pavement design methodologies such as the American Association of State Highway and Transportation Officials (AASHTO) MEPDG/Pavement-ME Design. The objective of this feasibility study was to develop frameworks for predicting the AC |E*| master curve from falling weight deflectometer (FWD) deflection-time history data collected by the Iowa Department of Transportation (Iowa DOT). A neural networks (NN) methodology was developed based on a synthetically generated viscoelastic forward solutions database to predict AC relaxation modulus (E(t)) master curve coefficients from FWD deflection-time history data. According to the ...


Effects Of Implements Of Husbandry (Farm Equipment) On Pavement Performance, Jason Lim, Andrea Azary, Lev Khazanovich, Shiyun Wang, Sunghwan Kim, Halil Ceylan, Kasthurirangan Gopalakrishnan 2017 University of Minnesota - Twin Cities

Effects Of Implements Of Husbandry (Farm Equipment) On Pavement Performance, Jason Lim, Andrea Azary, Lev Khazanovich, Shiyun Wang, Sunghwan Kim, Halil Ceylan, Kasthurirangan Gopalakrishnan

Halil Ceylan

The effects of farm equipment on the structural behavior of flexible and rigid pavements were investigated in this study. The project quantified the difference in pavement behavior caused by heavy farm equipment as compared to a typical 5-axle, 80 kip semi-truck. This research was conducted on full scale pavement test sections designed and constructed at the Minnesota Road Research facility (MnROAD). The testing was conducted in the spring and fall seasons to capture responses when the pavement is at its weakest state and when agricultural vehicles operate at a higher frequency, respectively.

The flexible pavement sections were heavily instrumented with ...


A Feasibility Study On Embedded Micro-Electromechanical Sensors And Systems (Mems) For Monitoring Highway Structures, Halil Ceylan, Kasthurirangan Gopalakrishnan, Peter Taylor, Pranav Shrotriya, Sunghwan Kim, Maxim Mikhaylovich Prokudin, Shiyun Wang, Ashley F. Buss, Jiake Zhang 2017 Iowa State University

A Feasibility Study On Embedded Micro-Electromechanical Sensors And Systems (Mems) For Monitoring Highway Structures, Halil Ceylan, Kasthurirangan Gopalakrishnan, Peter Taylor, Pranav Shrotriya, Sunghwan Kim, Maxim Mikhaylovich Prokudin, Shiyun Wang, Ashley F. Buss, Jiake Zhang

Halil Ceylan

Micro-electromechanical systems (MEMS) provide vast improvements over existing sensing methods in the context of structural health monitoring (SHM) of highway infrastructure systems, including improved system reliability, improved longevity and enhanced system performance, improved safety against natural hazards and vibrations, and a reduction in life cycle cost in both operating and maintaining the infrastructure. Advancements in MEMS technology and wireless sensor networks provide opportunities for long-term, continuous, real-time structural health monitoring of pavements and bridges at low cost within the context of sustainable infrastructure systems.

The primary objective of this research was to investigate the use of MEMS in highway structures ...


Defining The Attributes Of Good In-Service Portland Cement Concrete Pavements, Halil Ceylan, James K. Cable 2017 Iowa State University

Defining The Attributes Of Good In-Service Portland Cement Concrete Pavements, Halil Ceylan, James K. Cable

Halil Ceylan

Much of the current research in portland cement concrete (PCC) pavements deals with the analysis of early pavement life failures and seeks to find ways to prevent those from reoccurring. The Long Term Pavement Performance (LTPP) portion of the Strategic Highway Research Program (SHRP) has identified some of the key factors in designing and building new PCC pavements. This statement will build on the Iowa Highway Research Board (IHRB) project TR-463, Field Performance Study of Past Iowa Pavement Research: A Look Back. In Iowa and across the nation, there are multiple pavements that were built more than 20 years ago ...


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