Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Graduate Theses, Dissertations, and Problem Reports (ETD)

Discipline
Keyword
Publication Year
File Type

Articles 4021 - 4050 of 5007

Full-Text Articles in Entire DC Network

Characterization And Recommendations For The Remediation Of Acid Mine Drainage Impacted Streams, Patrick F. Hudnall Dec 2003

Characterization And Recommendations For The Remediation Of Acid Mine Drainage Impacted Streams, Patrick F. Hudnall

Graduate Theses, Dissertations, and Problem Reports (ETD)

The Beaver Creek watershed (located in West Virginia) has been severely impacted by Acid Mine Drainage (AMD) from surface mining operations. Water quality was monitored via water quality grab samples, in-situ water quality monitoring devices (YSI Sondes), and fish and macroinvertebrate community sampling. High concentrations of metal ions (Fe, Mn, Al, and SO 4) and acidity along with low pH and alkalinity values were observed from water quality sampling sites. The water quality data collected from the in-situ monitoring devices and fish and macroinvertebrate sampling supported the findings from the water quality grab sampling. Recommendations were made for the remediation, …

Go to article

Dynamic Response Evaluation Of Fiber-Reinforced Composite Bridge Decks And Bridges, Chandra Sekhar Jinka Dec 2003

Dynamic Response Evaluation Of Fiber-Reinforced Composite Bridge Decks And Bridges, Chandra Sekhar Jinka

Graduate Theses, Dissertations, and Problem Reports (ETD)

Fiber Reinforced Polymer (FRP) composite bridge decks are gaining attention of bridge owners because of their light self weight, corrosion resistance and ease of installation. The lighter weight and lower stiffness of the FRP decks combined with the lower level of damping (than concrete) can lead to excessive deck vibrations and may substantially increase the dynamic amplification of induced stress and deflections. Also, a global NDE technique using dynamic characterization is necessary to ensure the long term performance of FRP bridges. Therefore, an extensive study on FRP decks and FRP bridges is carried out both at laboratory and in the …

Go to article

Corrosion Of High-Chromium And Conventional Steels Embedded In Concrete, Vijayakumar Nachiappan Dec 2003

Corrosion Of High-Chromium And Conventional Steels Embedded In Concrete, Vijayakumar Nachiappan

Graduate Theses, Dissertations, and Problem Reports (ETD)

Corrosion of steel in concrete structures sometimes led to the unexpected failure of the concrete bridges in United States before their intended service life. High-chromium steel has been developed as a replacement for conventional steel in concrete because it may have a capability to retard the corrosion rate. In the present study, high-chromium and conventional steels were subjected to accelerated corrosion, and compared for their corrosion performance under chloride environment.;Corrosion rates of high-chromium and conventional steel rebars were compared by conducting two studies. One was with concrete blocks and the other was with bare steel rebars. In the former study, …

Go to article

Characterization Of Exhaust Emissions From Catalyzed Trap-Equipped Non-Road Heavy-Duty Diesel Engines, Vinay Nagendran Dec 2003

Characterization Of Exhaust Emissions From Catalyzed Trap-Equipped Non-Road Heavy-Duty Diesel Engines, Vinay Nagendran

Graduate Theses, Dissertations, and Problem Reports (ETD)

An emissions and engine performance study was conducted to explore the effects of ultra low sulfur fuels on an off-road, heavy-duty engine retrofitted with catalyzed traps. The study was conducted, on an 8 cylinder, mechanically controlled Caterpillar 3408, rear engine of a Scraper. An in-field transient duty cycle was determined by logging the engine speed and torque using an Electronic Control Unit (ECU) communication adapter on the Scraper. The test fuels included California Air Resources Board (CARB) off-road diesel fuel, Fischer-Tropsch and Emission Control Diesel-1 (ECD1) diesel fuels. The engine was retrofit with two different types of diesel particulate filters …

Go to article

Fatigue Response Of Fabric Reinforced Polymeric Composites, Venkatakrishnan Natarajan Dec 2003

Fatigue Response Of Fabric Reinforced Polymeric Composites, Venkatakrishnan Natarajan

Graduate Theses, Dissertations, and Problem Reports (ETD)

Fiber Reinforced Polymeric (FRP) Bridge decks have been an active area of research for the past 10 yrs. In order to better understand the long term efficiency and reliability of FRP bridge decks, and to develop design and test specifications, laboratory testing and characterization of the deck systems and the FRP material, is necessary. Majority of the FRP deck systems available to date are made of glass-reinforcing fibers in the form of fabrics, mats, rovings, etc. Currently, the fatigue response of multidirectional composite is not readily available in the literature and much work needs to be done to understand the …

Go to article

Long-Term Performance Of Pot Hardware In Continuous Galvanizing Lines, Venkatesh Parthasarathy Dec 2003

Long-Term Performance Of Pot Hardware In Continuous Galvanizing Lines, Venkatesh Parthasarathy

Graduate Theses, Dissertations, and Problem Reports (ETD)

Preliminary comparative wearing tests were conducted on wearguard bearing system against CF3M (casting version of 316L steel), with tungsten carbide laser clad coating, at 30% and 50% production line tension. Tests were also conducted on Stellite 6 against Tribaloy T 400 at 50% production line tension. For each test, periodic measurements of wearing rate, surface microstructure and surface hardness were carried out. An unique dross build-up setup which consists of two sleeves counter rotating against each other was designed to simulate the dross build-up in production line. The chemical composition of the dross material formed and change in sleeve microstructures …

Go to article

Finite Element Damage Modeling Of Plain Weave Fabrics, Kaarthik K. Sikkil Dec 2003

Finite Element Damage Modeling Of Plain Weave Fabrics, Kaarthik K. Sikkil

Graduate Theses, Dissertations, and Problem Reports (ETD)

Plain weave fabrics are used as reinforcements in composites in order to obtain improved inter-laminar properties. But these advantages are at the cost of reduced stiffness and strength in the in-plane directions. Therefore, it is important to study the mechanical behavior of such composites. In this work, the geometrical model needed for finite element discretization of the plain weave fabrics are developed for three configurations---single lamina, iso-phase, and out-of-phase. Next, a procedure to determine the longitudinal elastic modulus under tensile loading is presented. Then, a meso level damage model is used for predicting the inelastic tensile behavior of the fabrics. …

Go to article

Potential Field Theory And Its Applications To Classical Mechanical Problems, Shannon Rae Stillwagon Dec 2003

Potential Field Theory And Its Applications To Classical Mechanical Problems, Shannon Rae Stillwagon

Graduate Theses, Dissertations, and Problem Reports (ETD)

Advances in many scientific fields are expected to come from work in nanotechnology. Engineering at nano-scales presents novel problems that classical mechanics cannot solve. Many engineers are uncomfortable designing at this level because classical or continuum mechanics does not apply and quantum mechanics is said to apply in a tangible way. There are unique opportunities to contribute to the design, controls, and analysis of systems that are particularly suited to mechanical engineering. Within the derivations of classical mechanics are assumptions that limit its use to bulk engineering. These assumptions are examined to determine what principles can be extended to smaller …

Go to article

Spline Based Controller For Nonlinear Systems, Ali Karimi Dec 2003

Spline Based Controller For Nonlinear Systems, Ali Karimi

Graduate Theses, Dissertations, and Problem Reports (ETD)

The objective of this thesis is to apply spline theory to implement controllers for nonlinear systems. Two different systems, forced Duffing oscillators and power systems, are investigated. The spline method is used to mimic the controller which drives a state of the Duffing system toward a desired path. The spline-based nonlinear controller has piecewise polynomial segments with different order of polynomials on each segment. Controller efforts for different order of polynomial interpolants and power spectral densities of the controller signals are compared with the exact feedback linearizaton method.;The first objective for power systems is to design nonlinear excitation controllers for …

Go to article

Comparing Math Self-Efficacy In Middle School Girls, Anagloria Rodriguez Dec 2003

Comparing Math Self-Efficacy In Middle School Girls, Anagloria Rodriguez

Graduate Theses, Dissertations, and Problem Reports (ETD)

There have been no previous studies in the self-efficacy or single-sex schools literature that have looked at the possible relationship between self-efficacy expectations and type of school. This study compared mathematics self-efficacy of sixth, seventh, and eighth grade girls in a single-sex and a co-educational school. Four measures, including a personal background questionnaire, were used to collect data. Results showed a correlation for type of school and importance of mathematics. Contrary to assumptions made by the researcher, girls in the co-educational school scored consistently higher on all measures used. The results of this research suggest that it will take more …

Go to article

Geophysical Investigation Of The T And T Mine Complex, Preston County, West Virginia, Jennifer S. Mabie Aug 2003

Geophysical Investigation Of The T And T Mine Complex, Preston County, West Virginia, Jennifer S. Mabie

Graduate Theses, Dissertations, and Problem Reports (ETD)

The U.S. Department of Energy National Energy and Technology Laboratory have utilized an airborne platform with remote sensing technologies consisting of a multi-spectral scanner and airborne electromagnetic conductivity technologies to provide a rapid reconnaissance of watershed areas. Airborne surveys were flown over the T&T Mine Complex, located in Preston County, West Virginia. The electromagnetic and thermal anomalies observed in the airborne data were compared to mine maps to correlate anomalous features with mine pools and ground water discharge points that may represent acid mine drainage (AMD). Surface geophysical studies were performed to delineate the conductivity anomalies observed in the airborne …

Go to article

Investigation Into The Use Of A Tapered Element Oscillating Microbalance For Real-Time Particulate Measurement, Marcus Gilbert Aug 2003

Investigation Into The Use Of A Tapered Element Oscillating Microbalance For Real-Time Particulate Measurement, Marcus Gilbert

Graduate Theses, Dissertations, and Problem Reports (ETD)

Characterizing particulate matter (PM) in diesel exhaust emissions during transient test cycles has been a challenge for researchers. Acquisition of real-time PM data was proposed by the use of a Rupprecht and Patashnick Co., Inc. Series 1105 Diesel Particulate Monitor Tapered Element Oscillating Microbalance (TEOM) mass measuring device. The objectives of testing with a TEOM diesel particulate analyzer were to validate its collection capability and evaluate its real-time characteristics on transient test cycles. Conventional PM filtration was used as the base line for evaluating the TEOM collection capability. To evaluate real-time TEOM characteristics, the real-time mass rate data were separated …

Go to article

Investigation Of The Applicability Of Neural-Fuzzy Logic Modeling For Culvert Hydrodynamics, Jonathan M. Lester Aug 2003

Investigation Of The Applicability Of Neural-Fuzzy Logic Modeling For Culvert Hydrodynamics, Jonathan M. Lester

Graduate Theses, Dissertations, and Problem Reports (ETD)

As a result of an earlier WV DOH study, the idea came to the forefront of using a completely new approach to analyzing the complex subject of culvert hydrodynamics. The literature indicates that there have been no reports of artificial intelligence, to include neural networks, fuzzy logic, or combined neural-fuzzy logic, used to investigate and predict culvert hydrodynamics.;The scope of this dissertation is to investigate the applicability of using neural-fuzzy logic to predict culvert diameters. To analyze these flows, commercial culvert software was employed to account for all types of flow conditions. This included different slopes, lengths, flow-rates, pipe sizes, …

Go to article

Identification Of Metrics Used By Decision Makers To Determine The Efficacy Of Wireless Communication Systems In Higher Education, Karen R. Petitto Aug 2003

Identification Of Metrics Used By Decision Makers To Determine The Efficacy Of Wireless Communication Systems In Higher Education, Karen R. Petitto

Graduate Theses, Dissertations, and Problem Reports (ETD)

This research described the wireless network technologies that are available for use in higher education, determined the categories of metrics used to evaluate wireless network efficacy, and yielded a self-assessment instrument for guiding small college administrators considering wireless local area network systems.;The features and benefits of contemporary wireless systems in higher education were identified through a review of the professional journals, government publications, and standards industry documentation. The literature identified three categories of metrics beneficial for the evaluation of efficacy of wireless campus local area networks: cost, speed, and reliability. After identification of these categories of metrics, a modified Delphi …

Go to article

Numerical Simulation For Parametric Study Of A Two -Stroke Compression Ignition Direct Injection Linear Engine, Ehab F. Shoukry Aug 2003

Numerical Simulation For Parametric Study Of A Two -Stroke Compression Ignition Direct Injection Linear Engine, Ehab F. Shoukry

Graduate Theses, Dissertations, and Problem Reports (ETD)

A time based numerical simulation program was built at West Virginia University to simulate the operation of a two-stroke compression ignition direct injection linear engine. The two-stroke linear engine consists of two pistons connected together with a yoke and allowed to move freely according to the frequent combustion that takes place in response to fueling and load applied along the full stroke of the internal combustion engine. The simulating program used a series of dynamic and thermodynamic equations that were solved simultaneously to predict the performance and analyze the different factors affecting the operation of the two-stroke compression ignition linear …

Go to article

Fast Wavelet Collocation Methods For Second Kind Integral Equations On Polygons, Yi Wang Aug 2003

Fast Wavelet Collocation Methods For Second Kind Integral Equations On Polygons, Yi Wang

Graduate Theses, Dissertations, and Problem Reports (ETD)

In this thesis we develop fast wavelet collocation methods for integral equations of the second kind with weakly singular kernels over polygons . For this purpose, we construct multiscale wavelet functions and collocation functionals having vanishing moments. Moreover, we propose several truncation strategies, which lead to fast algorithms, for the coefficient matrix of the corresponding discrete system. Critical issues for numerical implementation of such methods are considered, such as choices of practical truncation strategies, numerical integration of weakly singular integrals, error controls of numerical quadrature and numerical solutions of resulting compressed linear systems. Numerical experiments are given to demonstrate proposed …

Go to article

Effluent Characterization Of Flow-Through Aquaculture Operations In West Virginia, James H. Cunningham Aug 2003

Effluent Characterization Of Flow-Through Aquaculture Operations In West Virginia, James H. Cunningham

Graduate Theses, Dissertations, and Problem Reports (ETD)

In order to reduce pollutant loading nationwide, the U.S. Environmental Protection Agency (EPA), working in conjunction with the U.S. Department of Agriculture (USDA), is in the process of developing effluent management guidelines and standards for private and public aquaculture operations. The purpose of this study is to provide industry, State, and Federal stakeholders with baseline effluent water quality data specific to West Virginia flow-through facilities, in an effort to help concerned parties make informed decisions regarding impending regulations and to examine the potential to increase production, based on effluent pollutant load and permit limitations.;WVU-CEE researchers examined both large and small-scale …

Go to article

Dowel-Concrete Contact Characteristics, Sri Vani Sirisha Motamarri Aug 2003

Dowel-Concrete Contact Characteristics, Sri Vani Sirisha Motamarri

Graduate Theses, Dissertations, and Problem Reports (ETD)

In this thesis, the dowel-pulling force and the dowel-concrete coefficient of friction were measured using a novel laboratory setup of vibrating wire strain gauges embedded in both the dowel and concrete. The gages are set to measure the shrinkage strain induced in the concrete that surrounds the dowel as it cures causing the solidified concrete to clamp on the steel dowel. The measurements reveal that radial strain in concrete around the dowel is not uniform along the dowel circumference. As the dowel is pulled out of concrete, both the dowel-pulling force and the elastic strain recovery in concrete are recorded …

Go to article

Hydrology Of The Beaver Creek Watershed Using The Tr-20 Model And The Hec-Hms Program, Vijayalakshmi Tummala Aug 2003

Hydrology Of The Beaver Creek Watershed Using The Tr-20 Model And The Hec-Hms Program, Vijayalakshmi Tummala

Graduate Theses, Dissertations, and Problem Reports (ETD)

The proposed alignment of the Appalachian Corridor H section from Davis to Bismarck passes through Beaver Creek watershed, Tucker County, West Virginia, which was heavily affected by the historical mining, deteriorating the water quality conditions of the Beaver Creek. To improve the water quality of Beaver Creek, identification of the sources of impaired waters and the conveyance of these flows into passive treatment facilities for remediation has been proposed. To aid in the design of these treatment facilities, a baseline hydrology description through the hydrologic modeling of the watershed with the aid of rainfall-runoff models was proposed. The watershed modeling …

Go to article

Acoustic Emission Evaluation Of Frp Composite Specimens In Tension And Bending, Ryan Edward Arnold Aug 2003

Acoustic Emission Evaluation Of Frp Composite Specimens In Tension And Bending, Ryan Edward Arnold

Graduate Theses, Dissertations, and Problem Reports (ETD)

Fiber Reinforced Polymer composites are relatively new to the bridge construction industry. One of the challenges to greater usage is the lack of a nondestructive method to accurately evaluate them. Nondestructive evaluation of FRP composite structures using Acoustic Emissions was conducted. Seven tension specimens and fifteen bending specimens from three different FRP manufacturers were tested. The hand-laid tension specimens produced at WVU were tested following ASTM D3039. The bending specimens were tested according to ASTM D790.;AE parameters were analyzed, and connections were found between them and the loading quarter of the specimens along with the damage zone of the specimens. …

Go to article

Assessment Of Students' Motivation To Use Computer Tools In A Web -Enhanced Counseling Course, Ying-Ying Kuo Aug 2003

Assessment Of Students' Motivation To Use Computer Tools In A Web -Enhanced Counseling Course, Ying-Ying Kuo

Graduate Theses, Dissertations, and Problem Reports (ETD)

Increasing numbers of professional counseling educators recognize the importance of information technology in counselor education, but the majority of members in the counseling community still lack interest in using computer tools for their professional development. How to motivate them to acquire these necessary skills is a problem in counselor education. This study provided a motivating web-based instructional (WBI) design for a web-enhanced course and examined counseling students' motivation to use computer tools in the course. It focused on four research questions that examined (1) how students' use of computers changed; (2) the impact of web-based instructional (WBI) features on their …

Go to article

Factors Influencing Participation In The Beef Quality Assurance Program Of The West Virginia Cooperative Extension Service, Sara D. Peacock Aug 2003

Factors Influencing Participation In The Beef Quality Assurance Program Of The West Virginia Cooperative Extension Service, Sara D. Peacock

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was to identify factors that contribute to participation in the West Virginia Beef Quality Assurance program. This study explored barriers and encouragers that affected involvement in educational programs offered by the West Virginia Cooperative Extension Service. The population consisted of 387 West Virginia Beef Producers from the West Virginia Young Sire Performance Evaluation Program mailing lists. The sample consisted of 85 producers randomly selected from the accessible population and 85 responses to the survey were completed. It was found that the average BQA farmer had a higher net income from their farming practices and had …

Go to article

Locomotive Emissions Effects Due To Engine Configuration, Nicholas P. Amandus Aug 2003

Locomotive Emissions Effects Due To Engine Configuration, Nicholas P. Amandus

Graduate Theses, Dissertations, and Problem Reports (ETD)

There are two studies reported in this document. The first study tested a General Electric C39-8 (Norfolk Southern Engine Number 8678) locomotive and a General Electric D8-40C (Norfolk Southern Engine Number 8692) locomotive, which were equipped with General Electric Model 7FDL16L6 diesel engines with mechanically controlled fuel injection. The objective of this study was to determine if a mechanically fuel injected diesel locomotive engine could be made to meet the EPA Tier 0 emissions limits without a substantial loss in fuel economy by retarding the injection timing and installing a more efficient turbocharger. The first locomotive was equipped with a …

Go to article

Comparison Of Heavy-Duty Diesel Engine Emissions Between An On-Road Route And Engine Dynamometer Simulated On-Road Cycle, John Curtis Gibble Aug 2003

Comparison Of Heavy-Duty Diesel Engine Emissions Between An On-Road Route And Engine Dynamometer Simulated On-Road Cycle, John Curtis Gibble

Graduate Theses, Dissertations, and Problem Reports (ETD)

Heavy-duty diesel engines are known to emit concentrations of harmful compounds of oxides of nitrogen (NOx) and particulate matter (PM). As a means of emissions control, engine dynamometer certification is currently employed. Current certification cycles provide for standardized comparisons, but may not be indicative of real-world emissions. Accurate in-use emissions testing would provide more realistic engine emissions values.;To examine the accuracy of the West Virginia University Mobile Emissions Measurement System (MEMS), on-road emissions tests were performed with six different diesel-powered vehicles. Exhaust species measured by MEMS were NO x and CO2, reported on a brake-specific basis. Information obtained during on-road …

Go to article

Evaluation Of Binder Grades On Rutting Performance, Sri Harsha Nallamothu Aug 2003

Evaluation Of Binder Grades On Rutting Performance, Sri Harsha Nallamothu

Graduate Theses, Dissertations, and Problem Reports (ETD)

Asphalt mixes that have a good history of resisting rutting in posted speed applications may not perform well in intersections, climbing lanes, truck weigh stations, and other slow speed areas. The West Virginia Division of Highways, WVDOH, has implemented the Performance Grade binder specifications for all paving projects and Superpave for high volume road projects. The standard binder specified in the state is a PG 64-22; for high volume roads a PG 70-22 is specified. These binders appear to be working well for most projects in the state. The Superpave guidelines have provision for increasing the binder grade by one …

Go to article

Permeability And Strength Of Artificially Controlled Porous Media, Suresh Pasumarty Aug 2003

Permeability And Strength Of Artificially Controlled Porous Media, Suresh Pasumarty

Graduate Theses, Dissertations, and Problem Reports (ETD)

Oil well industry has been using hydraulic fracturing to open new channels and thus increase well productivity. Materials known as Proppants are injected into the fracture to keep the channels conductive after the applied hydraulic pressure is removed. But the proppants used to date are often crushed under the influence of rock closures, which leads to clogging of the channel.;The main objective of this study was to model a material that would be able to withstand the rock closure stresses and also remain conductive. A three-dimensional finite element model was developed to study the effects of the shape and the …

Go to article

Bone Fracture Toughness Of Estrogen Deficient Rabbits, Matthew S. Smith Aug 2003

Bone Fracture Toughness Of Estrogen Deficient Rabbits, Matthew S. Smith

Graduate Theses, Dissertations, and Problem Reports (ETD)

Bone mass is commonly used as an indicator of fracture risk. It has been shown in numerous studies that bone loss causes increased bone fragility and risk of fracture. It has also been shown that 50% of patients with osteoporotic vertebral compression fractures have the same bone mass as normal age matched controls. Thus, bone mass alone is not the only indicator of bone quality and ability to resist fracture.;The objective of this study was to qualitatively assess bone's mechanical and histomorphometric changes with drug treatment, and estrogen deficiency, using fracture toughness, femoral neck fracture and histomorphometric analysis in an …

Go to article

Development Of Instrumentation For Acoustic Monitoring, Deepak Mehra Aug 2003

Development Of Instrumentation For Acoustic Monitoring, Deepak Mehra

Graduate Theses, Dissertations, and Problem Reports (ETD)

This thesis describes a source/sink flow acoustic wave sensor for the identification of leaks in gas pipelines. One of the many type of signals associated with the high velocity gas flowing out of a hole in the pipeline is the ramp or step pressure drop.;A large 3-inch diameter diaphragm was installed in an attempt to detect the low frequency waves associated with a leak. This diaphragm with source or sink flow through a 17mm internal diameter pipe acts as a pressure signal amplifier.;The deflection of the diaphragm due to the amplified force can be measured with a strain gage whose …

Go to article

Dynamic Modeling And Control Of A Proton Exchange Membrane Fuel Cell As A Distributed Generator, Padmanabhan Srinivasan Aug 2003

Dynamic Modeling And Control Of A Proton Exchange Membrane Fuel Cell As A Distributed Generator, Padmanabhan Srinivasan

Graduate Theses, Dissertations, and Problem Reports (ETD)

This research concentrated on the modeling and control of a Proton Exchange Membrane (PEM) fuel cell in a deregulated electric power system. The PEM fuel cell is a Multiple Input Multiple Output (MIMO) system with various dynamic states. In most previous model studies, the stack temperature of a fuel cell was considered to be constant. For long duration short transient and analysis, the stack temperature should be considered a variable. A derived dynamic model for the PEM fuel cell was analyzed using MATLAB/SIMULINK. Power generation characteristics of the PEM fuel cell were presented. Performance of the PEM fuel cell under …

Go to article

Effect Of Temperature Variations On Premature Cracking Of Dowel Jointed Concrete Pavements, Gergis W. William Aug 2003

Effect Of Temperature Variations On Premature Cracking Of Dowel Jointed Concrete Pavements, Gergis W. William

Graduate Theses, Dissertations, and Problem Reports (ETD)

Dowel jointed concrete pavements exhibit premature top-down transverse cracking at mid slab leading to a dramatic decrease in pavement service life. In the past, such cracks were attributed to combined stresses caused by the temperature differential through the slab thickness and heavy vehicle joint loading. This reasoning failed to explain transverse cracking of Palmdale, California slabs (developed before opening the pavement to traffic ) as well as the transverse cracks on I-80 in Pennsylvania, USA that appeared after one to two years of construction. In this study nonlinear 3D Finite Element (3DFE) analysis that includes detailed consideration of slab constraints …

Go to article

First Prev Next Last