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Book Synopsis GFRP Reinforced Lightweight Precast Bridge Deck Panels by : Chris P. Pantelides
Download or read book GFRP Reinforced Lightweight Precast Bridge Deck Panels written by Chris P. Pantelides and published by . This book was released on 2011 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present research project investigates lightweight and normal weight concrete precast panels for highway bridge decks. The deck panels are reinforced with Glass Fiber Reinforced Polymer (GFRP) bars. Due to the lack of research on lightweight concrete members reinforced with GFRP bars, the AASHTO LRFD Bridge Design Guide Specifications for GFRP Reinforced Concrete Decks do not permit the use of lightweight concrete when GFRP bars are used as flexural reinforcement. In this research, the experimental performance of lightweight concrete versus normal weight concrete precast GFRP reinforced deck panels is investigated in terms of flexural capacity, panel deflections, and shear capacity.
Book Synopsis Health Monitoring of Precast Bridge Deck Panels Reinforced with Glass Fiber Polymer (GFRP) Bars by : Chris P. Pantelides
Download or read book Health Monitoring of Precast Bridge Deck Panels Reinforced with Glass Fiber Polymer (GFRP) Bars written by Chris P. Pantelides and published by . This book was released on 2012 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present research project investigates monitoring concrete precast panels for bridge decks that are reinforced with Glass Fiber Reinforced Polymer (GFRP) bars. Due to the lack of long term research on concrete members reinforced with GFRP bars, long term health monitoring is important to record the performance and limit states of the GFRP decks and bridge as a whole. In this research, data is collected on concrete strains, bridge deflections, vertical girder accelerations, as well as initial truck load testing and lifting strains.
Book Synopsis Performance of a GFRP Reinforced Concrete Bridge Deck by : Amy Katherine Eitel
Download or read book Performance of a GFRP Reinforced Concrete Bridge Deck written by Amy Katherine Eitel and published by . This book was released on 2005 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Precast Concrete Bridge Deck Panels Reinforced with Glass Fiber Reinforced Polymer Bars by : Ruifen Liu
Download or read book Precast Concrete Bridge Deck Panels Reinforced with Glass Fiber Reinforced Polymer Bars written by Ruifen Liu and published by . This book was released on 2011 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Concrete Slab Surface Defects by : Portland Cement Association
Download or read book Concrete Slab Surface Defects written by Portland Cement Association and published by . This book was released on 2001 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis GFRP Reinforced Concrete Bridge Decks by : David Holman Deitz
Download or read book GFRP Reinforced Concrete Bridge Decks written by David Holman Deitz and published by . This book was released on 1998 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Field Investigation of Bridge Deck Reinforced with Glass Fiber Reinforced Polymer (GFRP) Rebar by : Behrouz Shafei
Download or read book Field Investigation of Bridge Deck Reinforced with Glass Fiber Reinforced Polymer (GFRP) Rebar written by Behrouz Shafei and published by . This book was released on 2020 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Minnesota Department of Transportation (MnDOT) constructed its first glass fiber polymer (GFRP) reinforced bridge deck on MN 42 over Dry Creek just north of Elgin, Minnesota. Successful implementation of the GFRP reinforced bridge decks would eliminate the steel corrosion problems that often shorten the life of the deck. Although there has been wide use of GFRP reinforcement in bridge decks in some parts of Canada, there have been relatively few GFRP reinforced bridge decks built in the United States. The Canadian decks were primarily designed using the empirical design method in the Canadian Highway Bridge Design Code. This method differs significantly from thee design guidelines produced by AASHTO and ACI Committee 440 on fiber-reinforced polymer (FRP) reinforcement. To maximize the knowledge and experience gained in constructing this type of bridge decks, this research project investigates the performance of a case-study bridge deck focusing on key issues such as cracking, deck stiffness, load distribution factors, and GFRP rebar strains. The main goals of this project are: • Collect behavior information and response characteristics of the bridge deck under service loads ·Identify the load distribution characteristics, especially for the bridge girders supporting the deck • Examine the short- and long-term durability of the bridge deck in terms of formation and propagation of cracks • Assess the impact of using non-conventional, corrosion-resistant deck reinforcement on maintenance needs and life-cycle cost with a specific interest in including service-life design philosophies. The outcome of this project will directly contribute to the development of guidance and details for the construction of corrosion-resistant bridges with service lives beyond 100 years.
Book Synopsis Health Monitoring of Precast Bridge Deck Panels with Glass Fiber Reinforced Polymer Bars by : Korin McDonald Holden
Download or read book Health Monitoring of Precast Bridge Deck Panels with Glass Fiber Reinforced Polymer Bars written by Korin McDonald Holden and published by . This book was released on 2012 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Performance of a Bridge Deck with Glass Fiber Reinforced Polymer Bars as the Top Mat of Reinforcement by : Kimberly Ann Phillips
Download or read book Performance of a Bridge Deck with Glass Fiber Reinforced Polymer Bars as the Top Mat of Reinforcement written by Kimberly Ann Phillips and published by . This book was released on 2005 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this research was to investigate the performance of glass fiber reinforced polymer (GFRP) bars as reinforcement for concrete decks. Today's rapid bridge deck deterioration is calling for a replacement for steel reinforcement. The advantages of GFRP such as its high tensile strength, light weight, and resistance to corrosion make it an attractive alternative to steel. The deck of one end-span of the Gills Creek Bridge was constructed with GFRP bars as the top mat and epoxy-coated steel bars as the bottom mat. Live load tests were performed in 2003, shortly after completion of construction, and again in 2004. In addition, tests were performed on the deck of the opposite end-span, which had all epoxy-coated steel reinforcing. The results of these tests were used to evaluate the girder distribution factors and impact factors of a GFRP reinforced bridge deck. In addition, a comparison of the results from the two test periods gives an indication of any changes in strains in the GFRP bars and if the deck is behaving differently than when first installed. The results were compared to the design standards specified by the American Concrete Institute in the Guide for the Design and Construction of Concrete Reinforced with FRP Bar to determine if the stresses in the deck were within the specified limits. The performances of the two end-spans were compared to determine if the GFRP reinforcement had any significant influence on overall bridge behavior. There were no significant differences in the behavior of the deck after 1 year of service and there was no visible cracking. The behavior of the two end-spans was similar, and the measured girder distribution factors were less than the AASHTO design recommendations. The impact factors were less than design values for the 2003 tests but higher than design values for the 2004 tests. Stresses in the GFRP reinforcing bars were much less than the design allowable stress and did not change significantly after 1 year of service. The strain gauges, vibrating wire gauges, and thermocouples in the bridge deck were monitored for approximately 1 year using a permanent data acquisition system. Daily, monthly, and long-term fluctuations in temperature and stresses were examined. The vibrating wire gauges were more reliable than the electrical resistance strain gauges, and the main influence on strain changes was temperature fluctuation. A cost/benefit analysis of using GFRP bars indicates their high initial costs are justified when compared to the costs of a concrete overlay.
Book Synopsis Health Monitoring of Precast Bridge Deck Panels Reinforced with Glass Fiber Reinforced Polymer Bars by : James McDaniel Ries
Download or read book Health Monitoring of Precast Bridge Deck Panels Reinforced with Glass Fiber Reinforced Polymer Bars written by James McDaniel Ries and published by . This book was released on 2011 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development, Testing, and Analytical Modeling of Fiber-reinforced Polymer Bridge Deck Panels by : Hesham Tuwair
Download or read book Development, Testing, and Analytical Modeling of Fiber-reinforced Polymer Bridge Deck Panels written by Hesham Tuwair and published by . This book was released on 2015 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: "A fiber-reinforced, polyurethane foam core was developed, tested, and evaluated as a possible replacement for the costly honeycomb core that is currently used to manufacture fiber-reinforced polymer (FRP) bridge deck panels. Replacing these panels would reduce both initial production costs and construction times while also enhancing structural performance. Experimental, numerical, and analytical investigations were each conducted. Three different polyurethane foam (PU) configurations were used for the inner core during the study's first phase. These configurations consisted of a high-density PU foam (Type 1), a gridwork of thin, interconnecting, glass fiber/resin webs that formed a bidirectional gridwork in-filled with a low-density PU foam (Type 2), and a trapezoidal-shaped, low-density PU foam that utilized E-glass web layers (Type 3). Based on the experimental results of this phase, the Type 3 core was recommended to move forward to the second phase of the study, where a larger-scale version of the Type 3, namely "−mid-scale panels," were tested both statically and dynamically. Analytical models and finite element analysis (FEA) were each conducted during a third phase. Analytical models were used to predict critical facesheet wrinkling that had been observed during phase two. A three-dimensional model using ABAQUS was developed to analyze each panel's behavior. A parametric study considering a wide variety of parameters was also conducted to further evaluate the behavior of the prototype panel. The fourth phase of this research investigated the performance of Type 3 panels under exposure to various environmental conditions to duplicate seasonal effects in Midwestern states. The results gathered from these four phases showed that the proposed Type 3 panel is a cost effective alternative to both honeycomb and reinforced concrete bridge decks."--Abstract, page iv.
Book Synopsis Fiber Reinforced Polymer Bridge Decks by : Judy Liu
Download or read book Fiber Reinforced Polymer Bridge Decks written by Judy Liu and published by Purdue University Press. This book was released on 2011-02-15 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overarching goal of this study was to perform a comprehensive evaluation of various issues related to the strength and serviceability of the FRP deck panels that are available in the industry. Specific objectives were to establish critical limit states to be considered in the design of FRP deck panel, to provide performance specifications to designers, and to develop evaluation techniques for the deck panels in service. Two different FRP panels were studied during the research project: a sandwich panel and a pultruded panel. The sandwich panel was initially selected for the rehabilitation case study bridge. However, for a variety of reasons outside of the scope of this study, both the sandwich panel and the initial case study bridge were dropped from consideration. A new case study bridge was selected, and new proposals from FRP deck manufacturers were solicited. At that time, the pultruded deck was selected. Analysis and experimental results related to both FRP deck panels are included in this report, as information from both decks is relevant to the overarching goal of this study. In November 2009, Sugar Creek Bridge became the first bridge in Indiana to be rehabilitated with an FRP bridge deck. An extensive study, including literature review, analysis, and load tests, suggest that the installed deck should perform well, with web buckling as the ultimate failure mode at a factor of safety of 5. Deflection limits, generally an issue with FRP decks, are satisfied with the installed deck. Meanwhile, some combination of acoustic emission methods, infrared thermography and a newly developed traveling truck deflection method show promise for non-destructive evaluation of the deck in-situ and identification of damage such as delamination of the wearing surface or web buckling. However, such methods have shown variability and could be prohibitively labor-intensive. Therefore, further evaluation is needed if such methods are to be pursued.
Book Synopsis Material Investigation of the Full-depth, Precast Concrete Deck Panels of the Old Woodrow Wilson Bridge by : Bernard Leonard Kassner
Download or read book Material Investigation of the Full-depth, Precast Concrete Deck Panels of the Old Woodrow Wilson Bridge written by Bernard Leonard Kassner and published by . This book was released on 2007 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Woodrow Wilson Memorial Bridge crossing the Potomac River near Washington, D.C., was replaced after more than 45 years of service. Researchers examined the full-depth, precast lightweight concrete deck panels that were installed on this structure in 1983. This report covers the visual survey and concrete material tests from this investigation. The concrete deck appeared to be in good condition overall, with no discernible cracks or signs of impending spalls on the top surface, except for a few signs of distress evidenced by asphalt patches. From below the deck, there were some indications of efflorescence and some panel joints exhibited rust staining, efflorescence, and small pop-out spalls. Closure pours for the expansion joints had more severe corrosion and efflorescence. Steel bearing plates and hold-down rods used for panel-to-deck connections were generally in good condition, although there were the occasional elements that rated poorly. The concrete sampled from the lightweight precast deck panels had an average compressive strength of 7.01 ksi (48.3 MPa), which represented little increase over the average 28-day strength. The average elastic modulus was 2,960 ksi (20.4 GPa), which is on the low end for typical modern concrete mixtures. The average splitting tensile strength was within a typical strength range at 535 psi (3.67 MPa). The average equilibrium unit weight of the plain concrete was 116.5 lb/ft3 (1866 kg/m3). The concrete was sound with no evidence of cracking or other deleterious reactions. The results of absorption, permeability, and chloride tests indicated a material matrix with the capability of absorbing moisture and other contaminants. An epoxy concrete surface layer, an asphaltic concrete wearing surface, and cover depths greater than 2 in seemed to have limited harmful chloride exposure to the reinforcing steel, which appeared to be in good condition. The full-depth, precast lightweight concrete panels appeared to have performed well, with few maintenance issues observed. Reports of similar, more recent, projects have noted additional direct costs associated with precast deck systems on the order of 26 to 30 dollars per square foot. However, anecdotal information from those projects, as well as an analysis of the construction alternatives presented herein, demonstrates that use of precast deck systems for deck replacement of existing bridges can shorten construction time by several weeks or months and induce far less disruption to travel than the conventional cast-in-place alternative, resulting in a dramatic reduction in user costs. When total life-cycle costs, including those associated with road user costs, construction time, construction safety, and maintenance, are taken into account full-depth precast concrete deck panels are the more economical alternative. The costs and benefits assessment demonstrated a clear advantage to using precast bridge deck technology for select deck rehabilitation projects. However, the nature of the estimates and the infrequency with which this sort of repair is implemented make it unreasonable to attribute a direct value in annual savings.
Book Synopsis The Development of Crashworthy Rails for Fiber Reinforced Polymer Honeycomb Bridge Deck System by : Moni G. El-Aasar
Download or read book The Development of Crashworthy Rails for Fiber Reinforced Polymer Honeycomb Bridge Deck System written by Moni G. El-Aasar and published by . This book was released on 2015 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fiber reinforced polymer (FRP) honeycomb panels offer an efficient and rapid replacement to concrete decks. The system consists of FRP honeycomb sandwich panels with adequate guardrails. Although FRP bridge deck panels have already been designed and used over the past several years on a number of through truss bridges, they could not be used on steel girder bridges until approved crashworthy bridge railing attachments could be validated. Two systems have been successfully crash tested, one with steel thrie beams/guardrails on steel posts and the other with concrete barriers. Both systems are now ready for use on temporary/detour bridges, or as permanent deck replacement allowing higher live load while keeping the existing steel girders and substructure. The light weight of FRP honeycomb panels (about 75% lighter than concrete) allows heavier truck loads, while keeping the existing girders and substructure without compromising the safety of the public. The roadway can be made wider by increasing the overhangs, thus allowing for wider farm equipment on narrow bridges in rural areas. The replacement of the concrete deck using this system may be completed in a matter of a few days, or even hours, as opposed to several months when using the conventional methods.
Book Synopsis Experimental and Analytical Study of Concrete Bridge Decks Constructed with FRP Stay-in-place Forms and FRP Grid Reiforcing by : David Allan Dieter
Download or read book Experimental and Analytical Study of Concrete Bridge Decks Constructed with FRP Stay-in-place Forms and FRP Grid Reiforcing written by David Allan Dieter and published by . This book was released on 2002 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Maine Composites Living Lab by : Roberto Lopez-Anido
Download or read book Maine Composites Living Lab written by Roberto Lopez-Anido and published by . This book was released on 2006 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt: A hybrid panel made of Fiber Reinforced Polymer (FRP) and glued laminated wood (glulam) is proposed as a new bridge deck system. The FRP-glulam system is based on the concept of optimizing a bridge deck panel with FRP composite skins and a glulam core. Like conventional glulam decks, FRP-glulam panels can be used either as a longitudinal deck or as a transverse deck with respect to the bridge span direction. The FRP-glulam panel was proven to be an attractive choice for a bridge deck system with fast installation, lightweight, and ease of connection with other bridge components. The FRP-glulam panel system was demonstrated at Union-Washington Skidmore Bridge deck, which was constructed in October of 2001. This report describes the laboratory work, design considerations and manufacturing of the bridge deck panels for the Skidmore Bridge in the towns of Washington and Union.
Book Synopsis Field Implementation of Fiber-reinforced Polymer (FRP) Deck Panels by : Jeffery S. Volz
Download or read book Field Implementation of Fiber-reinforced Polymer (FRP) Deck Panels written by Jeffery S. Volz and published by . This book was released on 2017 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although still in their infancy, fiber-reinforced polymer (FRP) bridges have shown great promise in eliminating corrosion concerns and meeting (or exceeding) FHWA's goal of 100-year life spans for bridges. While FRP bridges are cost-effective in terms of life cycle analyses, the combination of higher first costs and limited state DOT budgets has restricted their use. This research study examined a prototype FRP deck panel that incorporated polyurethane foam in an attempt to reduce the initial costs. The objective of this research was to develop the design methodology and construction details necessary to implement the prototype FRP deck panel on an actual bridge, addressing issues such as panel-to-panel connections, panel-to-girder connections, bridge skew, roadway crown, overlay materials, bridge guardrail attachment, and deck drainage. The full scale, prototype FRP deck panels performed exceptionally during all phases of testing. In general, results of the study indicated that the panels significantly exceeded the code required design forces in all instances. In flexure, shear and bearing, the average failure load exceeded the AASHTO Design Truck factored wheel load by nearly three times. Even more importantly, the panels behaved linearly-elastically through out the full range of loading and possessed significant post-buckling strength. In terms of construction details, the panel-to-panel connection indicated 100% load transfer up to a load of over twice the AASHTO Design Truck factored wheel load and, in fact, the panel failed due to localized bearing prior to any failure of the joint. Furthermore, testing of the guardrail-to-panel connection for the prototype FRP deck panels indicated that without any modifications, the panels satisfy the AASHTO TL-2 guardrail requirements. To attain an AASHTO TL- or TL-4 level, the panels would require localized reinforcement at the guardrail post connection points. In terms of potential overlay materials, epoxy-based polymer concretes offered the greatest bond strengths and thermal compatibility with the FRP deck. Finally, it appears that existing FRP design equations can reasonably predict the response and behavior of the VARTM-manufactured, prototype FRP bridge deck panels. The equations correctly predicted a flexural failure due to local buckling of the compression flange and a bearing failure due to local buckling of the webs beneath the concentrated load.
