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An Evaluation Of The Bailey Method To Predict Voids In The Mineral Aggregate, Craig Mason
An Evaluation Of The Bailey Method To Predict Voids In The Mineral Aggregate, Craig Mason
Graduate Theses, Dissertations, and Problem Reports
The Bailey Method was developed by Robert Bailey of the Illinois State DOT. It was intended to be a tool to predict changes in voids in the mineral aggregate (VMA) resulting from gradation alterations in compacted asphalt concrete samples. This research evaluates the changes in VMA due to gradation alterations of four contractors' mix designs. By providing a tool to predict VMA, a desired gradation for asphalt mixtures can be developed to create a strong aggregate skeleton for rut resistance, durability, and adequate VMA.;The objective of this research was to evaluate the Bailey Method to predict voids in the mineral …
Nondestructive Evaluation Of Frp Wrapped Concrete Cylinders Using Infrared Thermography And Ground Penetrating Radar, Shasanka Shekhar Dutta
Nondestructive Evaluation Of Frp Wrapped Concrete Cylinders Using Infrared Thermography And Ground Penetrating Radar, Shasanka Shekhar Dutta
Graduate Theses, Dissertations, and Problem Reports
The objectives of this research are: (a) to investigate the feasibility of using Infrared Thermography (IRT) and Ground Penetrating Radar (GPR) for detecting debonds in Fiber Reinforced Polymer (FRP) wrapped columns, and (b) to study the effect of the debonds on reduction in compressive strength of FRP wrapped columns.;All laboratory tests were conducted on concrete cylinders of size 6" x 12" (152.4 mm x 304.8 mm) in which air-filled and water-filled debonds of various sizes were inserted. Air-filled debonds were made by cutting plastic sheets into the desired sizes whereas water-filled debonds were made by injecting water in custom made …
Finite Element Analysis Of Long-Term Performance Of Buried High Density Polyethylene Pipes, Raj Kumar Gondle
Finite Element Analysis Of Long-Term Performance Of Buried High Density Polyethylene Pipes, Raj Kumar Gondle
Graduate Theses, Dissertations, and Problem Reports
Buried pipes are utilized for various applications such as sewers, water conveyance, and highway drainage systems. Advantages such as lightweight, ease of installation, low cost, higher impact strength and durability have resulted in the extensive use of High Density Polyethylene (HDPE) pipes during the past few years. Time dependent properties such as creep associated with HDPE material may reduce the expected design life of high density polyethylene pipes under field conditions. The objective of this research work was to investigate the time dependent nature of buried high density polyethylene pipes using the finite element analysis. The influence of trench width …
Forecasting Truck Traffic Growth At West Virginia Non-Interstate Highways, Sundeep Gopisetty
Forecasting Truck Traffic Growth At West Virginia Non-Interstate Highways, Sundeep Gopisetty
Graduate Theses, Dissertations, and Problem Reports
Reliable estimates of truck volumes are important in transportation planning and design applications, such as pavement design and management. This study evaluates different statistical methods based on their accuracy and data requirements, to calculate the truck growth rates by developing statistical models. Nine years of data from 1995 to 2003 was used to develop these models for calculating the truck growth rates at non-interstate highways of West Virginia. The literature review and the current practices for the state DOT was conducted to better understand and select the different forecasting methods that could be applicable to the given data. As a …
An Evaluation Of Current West Virginia Specifications And Construction Methods Regarding The Density Of Hot Mix Asphalt, Andrew Rudolph
An Evaluation Of Current West Virginia Specifications And Construction Methods Regarding The Density Of Hot Mix Asphalt, Andrew Rudolph
Graduate Theses, Dissertations, and Problem Reports
Pavement performance depends on the quality of the material, the mix design, and construction. The objectives of pavement construction are to place the material with a smooth surface, and compacted to the target density. Inadequate density permits water to enter the pavement leading to premature distress. It also can contribute to rutting as the pavement densify. A surface that is too dense is also prone to rutting.;This research evaluated methods for: measuring density, quality control, and longitudinal joint construction. Density specifications for West Virginia and surrounding states were reviewed to assess the compaction requirements for hot mix asphalt (HMA).;This research …
Edge Curling Effect On Interface Delamination Of Concrete Overlays For Bridge Decks, Tao Hong
Edge Curling Effect On Interface Delamination Of Concrete Overlays For Bridge Decks, Tao Hong
Graduate Theses, Dissertations, and Problem Reports
Deterioration of reinforced concrete bridge decks caused by various environmental conditions and traffic loads is a problem of significant concern. A protective thin overlay of about 2-inches is typically placed over newly constructed concrete bridge decks. Concrete overlay mixtures offer high resistance to traffic loads and environmental attacks, and often serve as leveling finished surfaces. A critical problem however has been the debonding and delamination propagation of the interface between overlay and substrate concrete, as observed in several bridges in West Virginia. Several studies indicated that during early-age of overlay curing, the debonding usually starts at corners or edges of …
Curve Number Dependence On Basic Hydrologic Variables Governing Runoff, Samuel J. Lamont
Curve Number Dependence On Basic Hydrologic Variables Governing Runoff, Samuel J. Lamont
Graduate Theses, Dissertations, and Problem Reports
The suitability of applying the NRCS Curve Number (CN) to continuous runoff prediction is examined by studying the dependence of the CN on several hydrologic variables. The continuous watershed model Hydrologic Simulation Program-FORTRAN (HSPF) is employed as a theoretical watershed in two numerical procedures designed to investigate the influence of soil type, soil depth, storm depth, storm distribution, and initial abstraction ratio value (lambda) on the CN. This study stems from a concurrent project involving the design of a computer modeling system to support the Cumulative Hydrologic Impact Assessments (CHIA) of over 230 watersheds throughout WV. A link between the …
Nondestructive Evaluation Of Fiber Reinforced Polymer Bridge Decks Using Ground Penetrating Radar And Infrared Thermography, Cheng Lok Hing
Nondestructive Evaluation Of Fiber Reinforced Polymer Bridge Decks Using Ground Penetrating Radar And Infrared Thermography, Cheng Lok Hing
Graduate Theses, Dissertations, and Problem Reports
Recent studies have focused on the development of Fiber Reinforcement Polymer (FRP) as an alternative construction material for highway bridge decks.;The goal of this study was to explore the viability of nondestructive testing of FRP bridge decks using infrared thermography (IRT) and ground penetrating radar (GPR).;All tests were conducted on a 6' x 3' (1828.8mm x 914.4mm) low profile (4'' or 101.6mm deep) FRP bridge deck and a 3' x 2' (914.4mm x 609.6mm) low profile FRP bridge deck specimen with embedded delaminations. Replaceable wearing surface modules with air-voids of varying sizes were used to simulate air-filled debonds between the …
Coordinated Traffic Signal Systems For Municipalities, Scott K. Nale
Coordinated Traffic Signal Systems For Municipalities, Scott K. Nale
Graduate Theses, Dissertations, and Problem Reports
Many municipalities have a need for a document which examines installation and operations methods used in coordinated traffic signal systems. Included within this document are the results of surveys of various municipalities which range in population from thirty three thousand persons to in excess of five hundred thousand persons. Along with the state of practice information, some conclusions and recommendations are defined so that municipalities may begin to implement coordinated traffic signal systems within their jurisdiction. This document will be of interest to those persons who manage, operate, and maintain traffic signal systems; in addition, engineers and municipal officials tasked …
Technical And Economic Effectiveness For Repair With Frp Of Concrete T-Beam Bridges: Case Study For Penndot-District 3, Daniel A. Brayack
Technical And Economic Effectiveness For Repair With Frp Of Concrete T-Beam Bridges: Case Study For Penndot-District 3, Daniel A. Brayack
Graduate Theses, Dissertations, and Problem Reports
The bridge inventory of the Pennsylvania Department of Transportation-District 3 (PennDOT-D3) includes 128 concrete T-Beam bridges built in 1920 to 1960. Due to deterioration over time, a significant number of these bridges are in need of repair or replacement. Traditional methods of repair require temporary bridge-closures and do not provide long-term effective solutions. Moreover, the cost of replacement is not financially viable. Thus, PennDOT D-3 sponsored this project to investigate the technical and economic suitability of a relatively new technology, widely used for seismic retrofit, consisting of externally bonded Fiber-Reinforce Polymer (FRP) for repair and retrofit of concrete T-Beam bridges …
Detection And Analysis Of Deck Cracks In A Long Span Empirically Designed Bridge Deck Through Embedded Sensory Systems, Mourad Y. Riad
Detection And Analysis Of Deck Cracks In A Long Span Empirically Designed Bridge Deck Through Embedded Sensory Systems, Mourad Y. Riad
Graduate Theses, Dissertations, and Problem Reports
Bridge decks exhibit premature longitudinal and transverse cracks leading to dramatic decrease in their service lives. Because of safety concerns, state highway agencies are overburdened by conducting annual visual inspections to detect signs of distresses in bridge elements and to provide continuous records of the conditions of such bridges. Those inspections are time consuming, and have multiple limitations which often yield controversial outputs. In this study, an instrumentation based system is designed and implemented on the Star City Bridge near Morgantown WV, to provide more sophisticated, and accurate methods to assess the structural performance of bridge elements, and hence provide …
Benefits To Signal Timing Optimization And Its To Corridor Operations, Darian Glitz
Benefits To Signal Timing Optimization And Its To Corridor Operations, Darian Glitz
Graduate Theses, Dissertations, and Problem Reports
Traffic signals are one of the primary constraints on corridor capacity in the highway/arterial network. The amount traffic is impeded is heavily dependent on the quality of the signal timings.;The purpose of this research was to conduct a case study of a congested corridor to demonstrate the benefits of traffic signal retiming/optimization on corridor operations. Tactically, this research involved development and application of a methodology to develop and assess signal timing plan alternatives. The research demonstrated the benefits in terms of delay, travel time, emissions, and fuel consumption. Strategically, this project can be used to provide a concrete example of …
Projection Of Truck Traffic Volumes At Interstate Permanent Automatic Traffic Recorders, Alex M. Sanchez
Projection Of Truck Traffic Volumes At Interstate Permanent Automatic Traffic Recorders, Alex M. Sanchez
Graduate Theses, Dissertations, and Problem Reports
This study documents the development of a methodology and models to forecast truck traffic volumes on Interstate Highways at a selection of Permanent Automatic Traffic Recorder (PATR) sites. The models were developed using data collected over a period nine years (1995 to 2003) from sixteen permanent count stations located throughout the state. Eight sites were ultimately utilized, five along rural interstate highways and the others from urban interstate highways. Model development was based on the time series method, using two techniques: regression analysis and the growth factor technique. Both were analyzed and compared in order to select the most reliable …
Cracking Studies Of High-Performance Concrete For Bridge Decks, Zhiguo Gong
Cracking Studies Of High-Performance Concrete For Bridge Decks, Zhiguo Gong
Graduate Theses, Dissertations, and Problem Reports
The cracking problem has been one of the major concerns for any concrete bridge deck, especially for cast-in-place concrete decks. The cracking can accelerate deterioration of the structure, thereby increasing maintenance costs and potentially shortening the system service-life. In order to achieve low permeability and reasonable strength, HPC deck mixture designs usually include a higher cementitious material content, which means more shrinkage, and therefore, makes the bridge deck more susceptible to cracking. Thus, further and better understanding of shrinkage and cracking properties of HPC designated for bridge decks is necessary. As part of a comprehensive project, this dissertation is focused …
Geosynthetic-Soil Interface Properties For Cohesionless And Cohesive Media, Ronald J. Ingram
Geosynthetic-Soil Interface Properties For Cohesionless And Cohesive Media, Ronald J. Ingram
Graduate Theses, Dissertations, and Problem Reports
Applications of geosynthetics have undergone extensive growth over the past 50 years. This study was focused on developing a better understanding the soil---geosynthetic interface properties. Two pullout test devices were built as a part of this study to investigate interface properties during pullout experiments. The objective of the study was to investigate the influence of soil type, geosynthetic type, moisture content, pullout box size, and sample size on the experimentally determined properties of the geosynthetic-soil interfaces. Three types of geosynthetic materials and three types of soils, namely natural sand, silty sand, and clayey sand were used. Geosynthetic materials A and …
Experimental And Numerical Investigation Of Seepage Into Longitudinal Drains, Ricardo Constantino Kiriakidis Longhi
Experimental And Numerical Investigation Of Seepage Into Longitudinal Drains, Ricardo Constantino Kiriakidis Longhi
Graduate Theses, Dissertations, and Problem Reports
The effectiveness of longitudinal drains was investigated by using experimental and numerical methods. The main objective of the longitudinal drains was to extract and deflect the water flowing through the soil. The influence of water level, drain spacing, slope inclination and soil type was investigated. Results show that the longitudinal drains can reduce the amount of water flowing through the soil significantly.;Several soil types were used in order to cover a wide range of properties. Different soil types were obtained by mixing Ohio River sand and Kaolinite clay in different proportions depending on the desired hydraulic conductivity. In this research …
Durability Of Nanoclay Frp Bars For Concrete Members, Vijayarajan Krishnaswamy
Durability Of Nanoclay Frp Bars For Concrete Members, Vijayarajan Krishnaswamy
Graduate Theses, Dissertations, and Problem Reports
In this research, glass fiber reinforced polymer (GFRP) bars were manufactured with nanoclay at CFC-WVU laboratory to evaluate mechanical properties and durability. GFRP bars (0.5 in. and 0.75 in. dia.) were manufactured at room temperature by manual pultrusion. Vinyl ester resin was used with 4% exfoliated nanoclay by weight with a 44.7% glass fiber (roving) volume. Shear mixer was used to exfoliate nanoclay in the resin. GFRP bars measuring 12 ft. long were successfully manufactured with a low void content of 0.39%.;GFRP bars manufactured with and without nanoclay were tested in tension, shear and bond prior to and after aging …
Numerical Modeling Of Deformations Caused By Carbon Dioxide Sequestration In Coal Seams, Xiaochao Tang
Numerical Modeling Of Deformations Caused By Carbon Dioxide Sequestration In Coal Seams, Xiaochao Tang
Graduate Theses, Dissertations, and Problem Reports
Atmospheric concentrations of CO2, as the most prevalent greenhouse gas, have been dramatically increased due to the anthropogenic emission mainly from fuel combustion. Geologic sequestration of CO2 in coal seams is an attractive choice to mitigate global CO2 emissions and its consequences. It can also provide secondary benefits such as enhanced coalbed methane production.;Three coal sites from Appalachian basin and Black Warrior basin were selected to numerically study the effects of CO2 injection in coal seams on overburden deformations. Finite element method was used for the analysis of overburden response. The analysis consisted of two phases---CO 2 injection and pore …