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Showing 1 to 20 of 38 for “"Glass fiber-reinforced polymer"”.
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Water vapor diffusion through glass fiber reinforced polymer nanocomposites
Fiber reinforced plastics (FRPs) are used to make aircraft structures, highway bridges, automobile components, storage tanks, boat hulls, truck beds, and so on. When these FRPs are exposed to the atmosphere, environmental humidity can weaken the structural integrity and cause fiber delamination. …
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Rehabilitation of timber railroad bridges using glass fiber reinforced polymer composite wraps
… cap/pile" joint and an above ground pile with Glass Fiber Reinforced Polymer (GFRP) composite wraps, in combination with phenolic formaldehyde adhesives. Static and dynamic testing was performed to determine the dynamic behavior and the live load distribution of the superstructure. This …
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Glass Fiber Reinforced Polymer Bars as the Top Mat Reinforcement for Bridge Decks
… and bond properties of three different types of fiber reinforced polymer (FRP) bars, and determine their effect on the design of a bridge deck using FRP bars as the top mat of reinforcement. The properties evaluated include the tensile strength, modulus of elasticity, bond behavior, and maximum …
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Shear strength of concrete beams reinforced with glass fiber reinforced polymer bars without stirrups
The use of fiber reinforced polymer (FRP) bars as an alternative to steel bars for reinforced concrete (RC) structures is gaining acceptance among the structural engineers. The investigation of structure performance of FRP-RC members has become a critical issue. Extensive researches have been …
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Bending behavior of concrete T-beams reinforced with glass fiber-reinforced polymer (GFRP) bars
Concrete slabs are integrally cast with girders or stringers (stiffening system) resulting in floor slabs, bridge decks, footers, retaining structures and others. A portion of slab between a stiffening system acts as flange and bends in unison with the stiffening system, i.e., classic T-beam …
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Degradation of High Voltage Glass Fiber-Reinforced Polymer Matrix Composites by Aggressive Environmental Conditions
<p>Polymer matrix composites reinforced with either E glass or ECR glass fibers-reinforced are used in a variety of high voltage electrical applications because of their advantages like lower weight and cost. However, they can be damaged by aggressive in-service conditions such as high temperature, …
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Bending and Shear Behavior of Pultruded Glass Fiber Reinforced Polymer Composite Beams With Closed and Open Sections
… and Resistance Factor Design (LRFD) of Pultruded Fiber Reinforced Polymer (FRP) Structures using probability-based limit states design. The fifth chapter of the pre-standard focuses on the design of members in flexure and shear under different failure modes, where the current failure load …
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Field Test of a Bridge Deck with Glass Fiber Reinforced Polymer Bars as the Top Mat of Reinforcement
… The strains and deflections in the span reinforced with GFRP in the top mat were recorded under a series of truck crossings, and these were compared to the span reinforced with all steel bars under identical loading conditions, as well as design values and other test results. Transverse …
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Performance of a Bridge Deck with Glass Fiber Reinforced Polymer (GFRP) Bars as the Top Mat of Reinforcement
… to perform live load testing on a bridge deck reinforced with GFRP in one span and steel in the other. The results were compared to the findings from the initial testing performed one year earlier. The strains and deflections of the bridge deck were recorded and the two spans compared. …
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Laboratory Tests of a Bridge Deck Prototype With Glass Fiber Reinforced Polymer Bars as the Top Mat of Reinforcement
… to comment on the construction of a bridge deck reinforced with GFRP bars and to note its advantages and disadvantages along with a critique of the current state-of-the-art of designing bridge decks with FRP reinforcement. It was found that the advantages of construction with GFRP bars far …
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Polyimide/silica nanoparticle-modified epoxy resin and kevlar/glass fiber-reinforced polymer matrix composites for potential application in commercial aircraft radomes
… develop novel low-dielectric constant Kevlar and glass fiber polymer matrix composites via the wet lay-up and vacuum bagging techniques by utilizing epoxy resins modified with Polyimide (PI) and 2wt.% to 8wt.% of KH-550-modified silica nanoparticles. Dielectric constant tests revealed that the …
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Manufacture and rehabilitation of guardrail posts using composite fabrics
… primary objective of this study was to develop a Glass Fiber Reinforced Polymer (GFRP) wood post that is more cost effective than a steel post and has smaller diameter than a conventional wood post. Another objective was to develop a portable fabric-wrapping machine for field …
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Continuation of Field and Laboratory Tests of a Proposed Bridge Deck Panel Fabricated from Pultruded Fiber-Reinforced Polymer Components
… The panels are made of off-the-shelf, pultruded glass fiber-reinforced polymer elements, bonded and mechanically fastened together. The testing involved laboratory stiffness tests performed on one deck panel which afterwards, was placed in a field test site at the I-81 Troutville Weigh Station …
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Strengthening historic covered bridges to carry modern traffic
… components of historic covered bridges using Glass Fiber Reinforced Polymer (GFRP) composite materials. The strengthening methodologies developed during this research project were designed to conform to the Secretary of the Interior's Standards for the Treatment of Historic Properties. More …
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Behavior of FRP reinforced and partially prestressed concrete members under the effects of temperature gradients
… and on the control of thermal cracking in reinforced concrete (RC) and partially prestressed concrete (PPC) beams. A total of eleven RC and PPC beams using FRP rebars were tested. The test program consisted of two series; RC series and PPC series. The eleven beams had the same concrete …
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Alkaline durability tests for E-glass/vinyl ester-reinforced polymer with nanoclay
Two kinds of GFRP (glass fiber reinforced plastics) composite materials were prepared and used in this study. One was E-glass/vinyl ester glass fiber reinforced polymer (plain GFRP) and the other was nano-GFRP prepared with the addition of 1 wt% of CloisiteRTM 10A nanoclay. These samples were aged …
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Seismic vulnerability assessment of off-ramp structures of the Las Vegas downtown viaduct
… of the columns were determined using Carbon Fiber and Glass Fiber Reinforced Polymer jackets, using the California Department of Transportation retrofit design guidelines.
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Analyses Of Pultruded Polyester/ E-Glass Composites Subjected To Environmental Degradation
… of experimental mold releases for a pultruded glass fiber reinforced polymer (gfrp). The initial assessment criteria include comparisons between pull forces and surface appearances for each mold release. Composites fabricated using experimental mold releases that exhibited acceptable properties …
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Strength Degradation of Gfrp Bars
… was to examine the strength degradation of Glass Fiber Reinforced Polymer (GFRP) bars at high temperature and alkalinity and determine if an Arrhenius type relationship can be used as a means of projecting life. The work done includes a thorough literature review, experiments and development …
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