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Title: Full-Scale Field Tests on Flexible Pipes under Live Load Application.
Creator: Arockiasamy, Madasamy, Chaallal, Omar, Limpeteeprakarn, Terdkiat
Date Issued: 2006-02
PURL: http://purl.flvc.org/fau/flvc_fau_islandoraimporter_10.1061_(ASCE)0887-3828(2006)20:1(21)_1630610987
Format: Citation

Title: Behavior of laterally loaded pile for integral abutment bridges.
Creator: Butrieng, Narongrit., Florida Atlantic University, Arockiasamy, Madasamy
Abstract/Description: Integral construction is being used to reduce the maintenance cost and avoid problems associated with bridge deck joints. Continuous deck jointless bridges with joints only at abutments and integral bridges with no joints at abutments are two major types of integral constructions being adopted. Integral abutment bridges accommodate superstructure movements without conventional expansion joints. The current practices adopted by various state departments of transportation are evaluated to...
Show moreIntegral construction is being used to reduce the maintenance cost and avoid problems associated with bridge deck joints. Continuous deck jointless bridges with joints only at abutments and integral bridges with no joints at abutments are two major types of integral constructions being adopted. Integral abutment bridges accommodate superstructure movements without conventional expansion joints. The current practices adopted by various state departments of transportation are evaluated to arrive at a rational design procedure for integral abutment bridges. An illustrative numerical design example of an integral abutment bridge is presented with emphasis on the pile-soil interaction, temperature, creep and shrinkage effects and varying soil strata. Important design parameters are identified concerning the selection and design of pile, use of predrilled hole, the type of fill in the predrilled hole, elevation of water table, soil type, and pile orientation. The effect of these parameters are analyzed using LPILE and FB-Pier computer programs.
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Date Issued: 2001
PURL: http://purl.flvc.org/fcla/dt/12868
Subject Headings: Bridges--Abutments, Piling (Civil engineering)
Format: Document (PDF)

Title: Debond of CFRP laminate bonded with concrete exposed to harsh environmental conditions.
Creator: Baker, William Arnold., Florida Atlantic University, Arockiasamy, Madasamy
Abstract/Description: This study evaluates the effectiveness of using externally bonded CFRP plates for repairing damaged prestressed concrete structures as an alternative to the metal sleeve splice. Currently the metal sleeve splice is the most often used method for the repair of damaged prestressed concrete bridges. The use of bonded CFRP plates could be a viable alternative to the use of steel in this type of repair because of their high strength and stiffness, resistance to corrosion and low weight. The bond...
Show moreThis study evaluates the effectiveness of using externally bonded CFRP plates for repairing damaged prestressed concrete structures as an alternative to the metal sleeve splice. Currently the metal sleeve splice is the most often used method for the repair of damaged prestressed concrete bridges. The use of bonded CFRP plates could be a viable alternative to the use of steel in this type of repair because of their high strength and stiffness, resistance to corrosion and low weight. The bond strength of CFRP plates bonded to concrete was evaluated by the use of a peel test and correlated by a finite element analysis. The peel test showed that the structural system was not significantly adversely effected by harsh environmental conditions. The results of this study showed that the use of CFRP plates is a feasible alternative to steel in the metal sleeve splice repair with some limiting factors.
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Date Issued: 1999
PURL: http://purl.flvc.org/fcla/dt/15721
Subject Headings: Fiber reinforced plastics, Concrete--Environmental testing, Prestressed concrete construction--Maintenance and repair
Format: Document (PDF)

Title: Driveability of concrete piles pretensioned with CFRP.
Creator: Gemmell, Thomas Scott., Florida Atlantic University, Arockiasamy, Madasamy
Abstract/Description: Four concrete piles prestressed with Carbon Fiber Reinforced Plastics were cast, in which two piles were fabricated with CFRP transverse reinforcement. The remaining two were provided with transverse steel spiral reinforcement. The piles were designed according to Florida Department of Transportation (FDOT) guidelines. The Pile Driving Analyzer (PDA) was chosen as the primary data acquisition system for the pile driving due to its mobility, reliability and robustness based on the high...
Show moreFour concrete piles prestressed with Carbon Fiber Reinforced Plastics were cast, in which two piles were fabricated with CFRP transverse reinforcement. The remaining two were provided with transverse steel spiral reinforcement. The piles were designed according to Florida Department of Transportation (FDOT) guidelines. The Pile Driving Analyzer (PDA) was chosen as the primary data acquisition system for the pile driving due to its mobility, reliability and robustness based on the high frequency excitation. The Pre-driving analysis consisted of several stages. The estimated static bearing capacity of the experimental piles was first calculated followed by SPT sampling at the pile driving site to obtain the soil conditions. The percent skin and toe friction, ultimate capacities, driving system parameters, maximum displacements, energy, integrity, tensions and static capacity were determined prior to pile driving. The piles were then driven and the data from the pile driving compared with the analysis.
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Date Issued: 1997
PURL: http://purl.flvc.org/fcla/dt/15496
Subject Headings: Concrete piling, Fiber reinforced plastics, Prestressed concrete
Format: Document (PDF)

Title: Peel-off characteristics of carbon fiber laminates bonded to concrete.
Creator: Barbosa, Mauro., Florida Atlantic University, Arockiasamy, Madasamy
Abstract/Description: This study presents the experimental and theoretical studies on debond of carbon fiber laminates bonded to concrete, which aids in understanding the mechanics of the repaired damaged prestressed concrete girders with externally bonded carbon plates. The bond strength of carbon plate specimens bonded to concrete is determined experimentally by the debond test. The initial crack is introduced in the specimens at one location, namely the plate/adhesive interface. The fracture toughness for...
Show moreThis study presents the experimental and theoretical studies on debond of carbon fiber laminates bonded to concrete, which aids in understanding the mechanics of the repaired damaged prestressed concrete girders with externally bonded carbon plates. The bond strength of carbon plate specimens bonded to concrete is determined experimentally by the debond test. The initial crack is introduced in the specimens at one location, namely the plate/adhesive interface. The fracture toughness for debonding is evaluated and expressed as the critical strain energy release rate. A finite element analysis was performed to evaluate the compliance and stress distribution in the debond test specimens.
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Date Issued: 2000
PURL: http://purl.flvc.org/fcla/dt/12669
Subject Headings: Prestressed concrete construction--Maintenance and repair, Fracture mechanics, Carbon composites
Format: Document (PDF)

Title: Load distribution of continuous bridges using field data and finite element analysis.
Creator: Bell, Nathaniel Bodecker., Florida Atlantic University, Arockiasamy, Madasamy
Abstract/Description: The present study was mainly directed towards the analyses of comprehensive field test data, moment and shear load distribution of continuous slab-on-girder bridges, and effects of skew angle, diaphragms, and shoulders on the wheel load distribution factors. Analytical and field studies on the wheel load distribution of continuous slab-on-girder bridges are presented and compared with those based on the AASHTO and LRFD codes. The main parameters that affect moment and shear load distribution...
Show moreThe present study was mainly directed towards the analyses of comprehensive field test data, moment and shear load distribution of continuous slab-on-girder bridges, and effects of skew angle, diaphragms, and shoulders on the wheel load distribution factors. Analytical and field studies on the wheel load distribution of continuous slab-on-girder bridges are presented and compared with those based on the AASHTO and LRFD codes. The main parameters that affect moment and shear load distribution are compared for single and multiple span bridges. The study on moment and shear load distribution focuses on five main parameters: spacing between the girders, variation of skew angle, variation in the number of spans, ratio between adjacent two spans, and span length. The effect of diaphragms on wheel load distribution was first evaluated for a field test bridge and compared with a finite element model of the actual bridge. The diaphragm parameters that affect the wheel load distribution were studied to evaluate the effect of each parameter.
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Date Issued: 1998
PURL: http://purl.flvc.org/fcla/dt/15556
Subject Headings: Bridges, Continuous--Testing, Bridges--Live loads
Format: Document (PDF)

Title: FRACTURE MECHANICS OF FIBER REINFORCED CONCRETE AND THE DURABILITY OF FIBER REINFORCED AND AIR-ENTRAINED CONCRETE EXPOSED TO FREEZE-THAW CYCLES (FATIGUE).
Creator: JEANFREAU, JAMES JOSEPH, JR., Florida Atlantic University, Arockiasamy, Madasamy
Abstract/Description: This thesis presents the experimental and analytical investigation of fiber (steel and Kevlar) reinforced concrete (FRC) to determine its fracture mechanic properties especially the J-integral. The freeze-thaw durability of fiber reinforced and air-entrained concrete is also investigated. The fiber reinforced concretes were found to have a much greater flexural strength and toughness compared to plain concrete. The compressive strength was found to decrease with the addition of fibers and air...
Show moreThis thesis presents the experimental and analytical investigation of fiber (steel and Kevlar) reinforced concrete (FRC) to determine its fracture mechanic properties especially the J-integral. The freeze-thaw durability of fiber reinforced and air-entrained concrete is also investigated. The fiber reinforced concretes were found to have a much greater flexural strength and toughness compared to plain concrete. The compressive strength was found to decrease with the addition of fibers and air-entrainment. In all cases the addition of 1.0% or more fibers prevented catastrophic failures. The mixing and setting of FRC requires a rigorous procedure which must be followed to achieve a homogeneous matrix.
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Date Issued: 1986
PURL: http://purl.flvc.org/fcla/dt/14334
Subject Headings: Reinforced concrete, Fiber, Fracture mechanics
Format: Document (PDF)

Title: Time-dependent behavior of reinforced concrete members with carbon fiber reinforced plastics (CFRP) under sustained loads.
Creator: Chidambaram, Senthilkumar., Florida Atlantic University, Arockiasamy, Madasamy
Abstract/Description: Carbon Fiber Reinforced Plastics has recently has been recognized as an alternative to conventional steel reinforcement in concrete due to its excellent resistance to corrosion. Four rectangular concrete beams and four concrete columns reinforced with CFRP bars were cast for the study of the long term behavior under uniform sustained loading. The beams were simply supported and subjected to uniform sustained loading. The columns were arranged in a steel reaction framework. The beams and...
Show moreCarbon Fiber Reinforced Plastics has recently has been recognized as an alternative to conventional steel reinforcement in concrete due to its excellent resistance to corrosion. Four rectangular concrete beams and four concrete columns reinforced with CFRP bars were cast for the study of the long term behavior under uniform sustained loading. The beams were simply supported and subjected to uniform sustained loading. The columns were arranged in a steel reaction framework. The beams and columns were instrumented and monitored to observe the change in the behavior due to the creep and shrinkage of concrete. An analytical method is developed to predict the long term behavior of CFRP reinforced concrete members. The calculated deformations compare reasonably with the experimental values. A modified equation for the calculation of the long term deflection is proposed for CFRP reinforced concrete beams. A simplified equation for the calculation of the creep coefficient is also proposed.
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Date Issued: 1997
PURL: http://purl.flvc.org/fcla/dt/15424
Subject Headings: Fiber reinforced plastics, Columns, Concrete, Concrete beams
Format: Document (PDF)

Title: Flexural Behavior of Concrete Using Basalt FRP Rebar.
Creator: Trotsek, Dylan, Arockiasamy, Madasamy, Florida Atlantic University, College of Engineering and Computer Science, Department of Civil, Environmental and Geomatics Engineering
Abstract/Description: The objective of this research is to determine if the deflection equations currently adopted in ACI 440.1r-15 and previously ACI 440.1r-06 accurately reflect the flexural behavior of an overreinforced Basalt Fiber Reinforced Polymer (BFRP) concrete beam. This was accomplished with experimental, analytical and numerical models. The experiment consisted of two beams doublyreinforced with BFRP rebar. A three-point flexural test on beams with a 30 in. clear span was performed and the deflections...
Show moreThe objective of this research is to determine if the deflection equations currently adopted in ACI 440.1r-15 and previously ACI 440.1r-06 accurately reflect the flexural behavior of an overreinforced Basalt Fiber Reinforced Polymer (BFRP) concrete beam. This was accomplished with experimental, analytical and numerical models. The experiment consisted of two beams doublyreinforced with BFRP rebar. A three-point flexural test on beams with a 30 in. clear span was performed and the deflections were recorded with a dial gauge and LVDT system. This data was compared to the equations from ACI 440.1r-06, ACI 440.1r-15, Branson’s equation and a numerical model created in ANSYS Mechanical APDL. Experimental results show a stiffer beam than expected when compared to the four predictive models for deflection. This can be due to the level of over-reinforcement and the small clear-span to depth ratio. Further research should be conducted to determine the cause for the additional stiffness.
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Date Issued: 2017
PURL: http://purl.flvc.org/fau/fd/FA00004920, http://purl.flvc.org/fau/fd/FA00004920
Subject Headings: Reinforced concrete construction--Mathematical models., Structural analysis (Engineering), Fiber-reinforced concrete.
Format: Document (PDF)

Title: 3D Reconstruction of Simulated Bridge Pier Local Scour Using Green Laser and HydroLite Sonar.
Creator: Banyhany, Musab, Arockiasamy, Madasamy, Florida Atlantic University, College of Engineering and Computer Science, Department of Civil, Environmental and Geomatics Engineering
Abstract/Description: Scour is the process of sediment erosion around bridge piers and abutments due to natural and man-made hydraulic activities. Excessive scour is a critical problem that is typically handled by enforcing design requirements that make the submerged structures more resilient. The purpose of this research is to demonstrate the feasibilities of the Optical- Based Green Laser Scanner and HydroLite Sonar in a laboratory setting to capture the 3D profile of simulated local scour holes. The Green Laser...
Show moreScour is the process of sediment erosion around bridge piers and abutments due to natural and man-made hydraulic activities. Excessive scour is a critical problem that is typically handled by enforcing design requirements that make the submerged structures more resilient. The purpose of this research is to demonstrate the feasibilities of the Optical- Based Green Laser Scanner and HydroLite Sonar in a laboratory setting to capture the 3D profile of simulated local scour holes. The Green Laser had successfully reconstructed a 3D point-cloud imaging of scour profiles under both dry and clear water conditions. The derived scour topography after applying water refraction correction was compared with the simulated scour hole, and was within 1% of the design dimensions. The elevations at the top and bottom surfaces of the 6.5-inch scour hole were -46.6 and -53.11 inches from the reference line at the origin (0,0,0) of the laser scanner. The HydroLite Sonar recorded hydrographical survey points of the scour’s interior surface. The survey points were then processed using MATLAB to obtain a 3D mesh triangulation.
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Date Issued: 2018
PURL: http://purl.flvc.org/fau/fd/FA00005995
Subject Headings: Scour at bridges, Sonar, Lasers, Scour at bridges--Evaluation--Technique
Format: Document (PDF)

Title: Adhesive Joint Analyses Using Ansys CZM Modeling of a Prefabricated Hybrid Concrete-GFRP-CFRP Unit.
Creator: Kabaluk, Maksim, Arockiasamy, Madasamy, Florida Atlantic University, College of Engineering and Computer Science, Department of Civil, Environmental and Geomatics Engineering
Abstract/Description: The present study reviews applications of FRP materials joined by structural adhesives in civil engineering. FE analysis with mix-mode cohesive zone material model (CZM) was used to analyze stresses induced in two structural adhesives joining dissimilar materials (concrete GFRP-CFRP) of the hybrid-composite unit. The predicted failure loads, displacements and deformation by the 3-D non-linear FE analysis in the present study are in good agreement with the experimental results of the hybrid...
Show moreThe present study reviews applications of FRP materials joined by structural adhesives in civil engineering. FE analysis with mix-mode cohesive zone material model (CZM) was used to analyze stresses induced in two structural adhesives joining dissimilar materials (concrete GFRP-CFRP) of the hybrid-composite unit. The predicted failure loads, displacements and deformation by the 3-D non-linear FE analysis in the present study are in good agreement with the experimental results of the hybrid-composite unit reported by Deskovic et al. (1995). The contact analysis revealed a complex 3-D state of stress in the bondlines of both structural adhesives. It is concluded that higher joint strength is expected when a ductile adhesive is used.
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Date Issued: 2019
PURL: http://purl.flvc.org/fau/fd/FA00013222
Subject Headings: Adhesive joints, Fiber reinforced polymers, Composites, Concrete
Format: Document (PDF)

Title: Wind effect on super-tall buildings using computational fluid dynamics and structural dynamics.
Creator: Assaad, Bilal, Arockiasamy, Madasamy, Florida Atlantic University, College of Engineering and Computer Science, Department of Civil, Environmental and Geomatics Engineering
Abstract/Description: Super-tall buildings located in high velocity wind regions are highly vulnerable to large lateral loads. Designing for these structures must be done with great engineering judgment by structural professionals. Present methods of evaluating these loads are typically by the use of American Society of Civil Engineers 7-10 standard, field measurements or scaled wind tunnel models. With the rise of high performance computing nodes, an emerging method based on the numerical approach of...
Show moreSuper-tall buildings located in high velocity wind regions are highly vulnerable to large lateral loads. Designing for these structures must be done with great engineering judgment by structural professionals. Present methods of evaluating these loads are typically by the use of American Society of Civil Engineers 7-10 standard, field measurements or scaled wind tunnel models. With the rise of high performance computing nodes, an emerging method based on the numerical approach of Computational Fluid Dynamics has created an additional layer of analysis and loading prediction alternative to conventional methods. The present document uses turbulence modeling and numerical algorithms by means of Reynolds-averaged Navier-Stokes and Large Eddy Simulation equations applied to a square prismatic prototype structure in which its dynamic properties have also been investigated. With proper modeling of the atmospheric boundary layer flow, these numerical techniques reveal important aerodynamic properties and enhance flow visualization to structural engineers in a virtual environment.
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Date Issued: 2015
PURL: http://purl.flvc.org/fau/fd/FA00004343, http://purl.flvc.org/fau/fd/FA00004343
Subject Headings: Boundary layer control, Buildings -- Aerodynamics, Computational fluid dynamics, Structural dynamics -- Data processing, Vortex motion
Format: Document (PDF)

Title: STOCHASTIC BRIDGE CONDITION DETERIORATION MODELS FOR CONCRETE AND TIMBER BRIDGES.
Creator: Srikanth, Ishwarya, Arockiasamy, Madasamy, Florida Atlantic University, Department of Civil, Environmental and Geomatics Engineering, College of Engineering and Computer Science
Abstract/Description: This dissertation presents methodologies to develop bridge condition deterioration models which accounts for non-stationarity in the deterioration process with applications to Florida concrete and timber bridges. A critical and comprehensive review of bridge deterioration modeling approaches is presented with illustrative examples based on regression, stochastic Markov-chain, mechanistic and Artificial Neural Network (ANN) models. This study also develops a framework for relating the...
Show moreThis dissertation presents methodologies to develop bridge condition deterioration models which accounts for non-stationarity in the deterioration process with applications to Florida concrete and timber bridges. A critical and comprehensive review of bridge deterioration modeling approaches is presented with illustrative examples based on regression, stochastic Markov-chain, mechanistic and Artificial Neural Network (ANN) models. This study also develops a framework for relating the qualitative National Bridge Inventory (NBI) condition ratings with normalized resistance of the concrete bridge component with application to concrete bridge T-beams to reduce the subjectivity of the NBI condition rating. A systematic approach for the prioritization of bridges for inspection is developed using the multivariate regression modeling technique, and forecasting models are developed based on multiple relevant variables for both concrete bridge superstructure and substructure components. This dissertation also develops an approach for risk and reliability assessments of concrete and timber bridges based on non-parametric deterioration modeling techniques such as average time-in condition rating (ATICR) and Kaplan-Meier (K-M) survival (reliability) models, for probabilistic prediction of bridge safety while accounting for the partial information from the incomplete bridge condition observations. This study develops relative deterioration rates based on the ATICR and illustrates the time-dependent probability of deterioration of the concrete and timber bridge components based on K-M estimates. Further, the relationship of explanatory variables to the survival time is discussed and estimates are made for the median survival years for reinforced concrete solid slab decks. This dissertation presents the code developed in R for multivariate regression analysis and data-driven reliability analysis. Future research studies in bridge deterioration modeling are also presented.
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Date Issued: 2021
PURL: http://purl.flvc.org/fau/fd/FA00013764
Subject Headings: Bridges--Deterioration--Mathematical models, Concrete bridges, Wooden bridges, Bridges--Management--Data processing
Format: Document (PDF)

Title: Behavior of precast single-cell segmental box bridges with external post-tensioning subjected to cyclic loading and temperature changes.
Creator: Sinha, Vikas., Florida Atlantic University, Arockiasamy, Madasamy, College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
Abstract/Description: The behavior of a precast single-cell segmental box bridge with external post-tensioning is studied based on a 1:3.5 scale model of the Long Key bridge in the Florida Keys. Constant amplitude fatigue loading was applied on the model at a critical location simulating HS20-44 AASHTO truck loading. The performance of the bridge model was evaluated in terms of deflections, strains in concrete and across the joints, and behavior of joints between the segments with increasing number of cycles of...
Show moreThe behavior of a precast single-cell segmental box bridge with external post-tensioning is studied based on a 1:3.5 scale model of the Long Key bridge in the Florida Keys. Constant amplitude fatigue loading was applied on the model at a critical location simulating HS20-44 AASHTO truck loading. The performance of the bridge model was evaluated in terms of deflections, strains in concrete and across the joints, and behavior of joints between the segments with increasing number of cycles of fatigue loading. Thermal response of the bridge model was also studied using finite element analysis and the predicted temperature distributions were compared with the experimental values.
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Date Issued: 1991
PURL: http://purl.flvc.org/fcla/dt/14729
Subject Headings: Precast concrete construction--Fatigue, Post-tensioned prestressed concrete construction--Fatigue, Bridges, Box girder, Strains and stresses
Format: Document (PDF)

Title: Behavior of repaired concrete structures with advanced composites in cold environment.
Creator: Thayer, Chad C., Florida Atlantic University, Arockiasamy, Madasamy, College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
Abstract/Description: This report presents the experimental and theoretical studies on the feasibility of using CFRP laminates for strengthening damaged reinforced concrete beams in cold environment. Experimental work includes investigation on fatigue strength, ultimate capacity and failure modes of repaired reinforced concrete beams in cold environment and room temperature. The repaired concrete beams subjected to fatigue in cold environment exhibit fewer number of cracks than those observed in beams at room...
Show moreThis report presents the experimental and theoretical studies on the feasibility of using CFRP laminates for strengthening damaged reinforced concrete beams in cold environment. Experimental work includes investigation on fatigue strength, ultimate capacity and failure modes of repaired reinforced concrete beams in cold environment and room temperature. The repaired concrete beams subjected to fatigue in cold environment exhibit fewer number of cracks than those observed in beams at room temperature. The crack propagation and resulting damage were faster in beams tested in room temperature than those at cold temperatures. The study also includes investigation of thermal response of repaired plain concrete beams with CFRP laminates subjected to thermal cycles. Analytical studies on the distributed shear forces and peeling forces of repaired reinforced concrete beams were carried out to analyze the interaction between the laminate and the concrete interface. The temperature distribution and strains developed by the temperature differential are determined in the repaired plain concrete beams subjected to thermal cycles and the analytical results compared with the measured values.
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Date Issued: 1997
PURL: http://purl.flvc.org/fcla/dt/15517
Subject Headings: Reinforced concrete--Cracking, Fiber reinforced plastics, Composite materials--Effect of environment on, Fibrous composites--Fatigue
Format: Document (PDF)

Title: Behavior of eccentrically loaded slender concrete columns reinforced with CFRP bars.
Creator: Xia, Wei., Florida Atlantic University, Arockiasamy, Madasamy, College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
Abstract/Description: In a highly corrosive environment, corrosion is the main factor leading to deterioration and eventual failure of conventional reinforced or prestressed concrete structures. Carbon Fiber Reinforced Plastics (CFRP) are considered as an alternative to steel reinforcement due to its excellent corrosion resistance. This investigation was conducted to establish the feasibility of using CFRP cables as reinforcing elements in reinforced concrete columns. Besides investigating durability of CFRP...
Show moreIn a highly corrosive environment, corrosion is the main factor leading to deterioration and eventual failure of conventional reinforced or prestressed concrete structures. Carbon Fiber Reinforced Plastics (CFRP) are considered as an alternative to steel reinforcement due to its excellent corrosion resistance. This investigation was conducted to establish the feasibility of using CFRP cables as reinforcing elements in reinforced concrete columns. Besides investigating durability of CFRP cables in adverse environments (alkali and sea water) experimental and theoretical studies were carried out to study the behavior of CFRP reinforced concrete slender columns under combined axial load and bending moment. Exposure to air, sea water and alkali environments with alternating wet/dry cycles had no adverse effect on the strength of the CFRP cables. The CFRP reinforced concrete columns subjected to eccentric loads exhibited excellent ultimate load capacity. Feasibility of using CFRP cables in the reinforced concrete columns is assessed based on deflections, strains, curvatures, crack distributions, first crack loads and ultimate loads.
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Date Issued: 1997
PURL: http://purl.flvc.org/fcla/dt/15426
Subject Headings: Reinforced concrete, Columns, Concrete, Fiber reinforced plastics, Eccentric loads
Format: Document (PDF)

Title: Analytical studies of concrete double-tee bridge system prestressed with FRP materials.
Creator: Qiao, Pizhong., Florida Atlantic University, Arockiasamy, Madasamy, College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
Abstract/Description: The finite element analyses of the concrete bridge system and single double-tee beams are carried out using both orthotropic and isotropic modeling including linear and nonlinear behavior. The orthotropic concrete double-tee bridge system is modeled to predict the deformational behavior of bridge deck under the AASHTO service loading conditions in the static regimes. The nonlinear analyses of reinforced and prestressed concrete rectangular beams are also carried out to verify the validity of...
Show moreThe finite element analyses of the concrete bridge system and single double-tee beams are carried out using both orthotropic and isotropic modeling including linear and nonlinear behavior. The orthotropic concrete double-tee bridge system is modeled to predict the deformational behavior of bridge deck under the AASHTO service loading conditions in the static regimes. The nonlinear analyses of reinforced and prestressed concrete rectangular beams are also carried out to verify the validity of modeling. Both the linear and nonlinear finite element analyses for single double-tee beams prestressed with FRP materials are carried out in this study. In this research, the MARC finite element software on the VAX frame is used as a tool to carry out the analyses.
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Date Issued: 1993
PURL: http://purl.flvc.org/fcla/dt/14936
Subject Headings: Finite element method, Fiber reinforced plastic, Bridges, Concrete--Floors, Prestressed concrete beams
Format: Document (PDF)

Title: Analytical and experimental studies on the static and fatigue behavior of precast prestressed concrete multibox beam bridge system.
Creator: Kozhikote, Ramkumar P., Florida Atlantic University, Arockiasamy, Madasamy, College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
Abstract/Description: The feasibility of the use of precast prestressed concrete multi-box beams with transverse post tensioning is examined for a medium span bridge system based on analytical and experimental studies on a 1:2.5 scale model. Constant amplitude fatigue loading was applied on the model at typical locations simulating HS20-44 AASHTO truck loading. The performance of the bridge system was evaluated in terms of deflections, strains in the concrete, wheel load distribution, and behavior of longitudinal...
Show moreThe feasibility of the use of precast prestressed concrete multi-box beams with transverse post tensioning is examined for a medium span bridge system based on analytical and experimental studies on a 1:2.5 scale model. Constant amplitude fatigue loading was applied on the model at typical locations simulating HS20-44 AASHTO truck loading. The performance of the bridge system was evaluated in terms of deflections, strains in the concrete, wheel load distribution, and behavior of longitudinal joints with increasing number of cycles of fatigue loading. A grillage analysis of the bridge system was carried out to predict the elastic behavior and the cracking moments and the results compared with the experimental values.
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Date Issued: 1989
PURL: http://purl.flvc.org/fcla/dt/14512
Subject Headings: Prestressed concrete beams--Fatique, Bridges, Box girder, Box beams
Format: Document (PDF)

Title: Debond test of steel plate bonded with concrete exposed to harsh environment.
Creator: Tharitimanont, Pattanaphol., Florida Atlantic University, Arockiasamy, Madasamy, College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
Abstract/Description: This study presents the experimental and theoretical studies on debond of steel bonded to concrete, which aids in understanding the mechanics of the repaired damaged prestressed concrete girders with externally bonded steel plates. The bond strength of bonded steel plate specimen is determined experimentally by the debond test. The initial crack is introduced in the specimens at three different locations, which include the steel/adhesive interface, adhesive through-thickness, and adhesive...
Show moreThis study presents the experimental and theoretical studies on debond of steel bonded to concrete, which aids in understanding the mechanics of the repaired damaged prestressed concrete girders with externally bonded steel plates. The bond strength of bonded steel plate specimen is determined experimentally by the debond test. The initial crack is introduced in the specimens at three different locations, which include the steel/adhesive interface, adhesive through-thickness, and adhesive/concrete interface. Certain debond test specimens are exposed to freeze/thaw and tidal cycles to evaluate the degradation in bond strength resulting from the environmental conditions. The fracture toughness for debonding would be evaluated and expressed as the critical strain energy release rate. A finite element analysis was performed to evaluate the compliance and stress distribution in the debond test specimens. Also, stress distribution of repaired AASHTO prestressed concrete bridge girders with metal sleeve splice was also determined at the interface of steel and concrete.
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Date Issued: 1999
PURL: http://purl.flvc.org/fcla/dt/15681
Subject Headings: Bridges, Concrete--Testing, Prestressed concrete construction, Finite element method, Concrete--Environmental testing
Format: Document (PDF)

Title: Driveability of concrete piles pretensioned with CFRP and confinement effects of CFRP hoops in reinforced concrete columns.
Creator: Potturu, Rama Kumar., Florida Atlantic University, Arockiasamy, Madasamy, College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
Abstract/Description: Carbon Fiber Reinforced Plastics has recently has been recognized as an alternative to conventional steel reinforcement in concrete due to its excellent resistance to corrosion. Four rectangular concrete beams and four concrete columns reinforced with CFRP bars were cast for the study of the long term behavior under uniform sustained loading. The beams were simply supported and subjected to uniform sustained loading. The columns were arranged in a steel reaction framework. The beams and...
Show moreCarbon Fiber Reinforced Plastics has recently has been recognized as an alternative to conventional steel reinforcement in concrete due to its excellent resistance to corrosion. Four rectangular concrete beams and four concrete columns reinforced with CFRP bars were cast for the study of the long term behavior under uniform sustained loading. The beams were simply supported and subjected to uniform sustained loading. The columns were arranged in a steel reaction framework. The beams and columns were instrumented and monitored to observe the change in the behavior due to the creep and shrinkage of concrete. An analytical method is developed to predict the long term behavior of CFRP reinforced concrete members. The calculated deformations compare reasonably with the experimental values. A modified equation for the calculation of the long term deflection is proposed for CFRP reinforced concrete beams. A simplified equation for the calculation of the creep coefficient is also proposed.
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Date Issued: 1997
PURL: http://purl.flvc.org/fcla/dt/15507
Subject Headings: Fiber reinforced plastics, Concrete piling, Reinforced concrete, Columns, Concrete
Format: Document (PDF)

FAU Theses and Dissertations (38)	+ -
FAU College Collections (5)	+ -

Fiber reinforced plastics (11)	+ -
Expert systems (Computer science) (4)	+ -
Prestressed concrete construction (4)	+ -
Reinforced concrete, Fiber (4)	+ -
Bridges, Box girder (3)	+ -

Columns, Concrete (3)	+ -
Fracture mechanics (3)	+ -
Strains and stresses (3)	+ -
Bridges, Concrete (2)	+ -
Bridges--Abutments (2)	+ -
Bridges--Live loads (2)	+ -
Carbon composites (2)	+ -
Carbon fibers (2)	+ -
Concrete piling (2)	+ -
Concrete--Environmental testing (2)	+ -
Finite element method (2)	+ -
Piling (Civil engineering) (2)	+ -
Post-tensioned prestressed concrete construction--Fatigue (2)	+ -
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