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Showing 1 to 20 of 169 for “"CFRP"”.
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Flexural Behavior of CFRP-Pretensioned Girders
… failures. Carbon fiber reinforced polymers (CFRP), as an emerging material, have potential to replace prestressing steel and provide corrosion-free prestressed bridge girders. The application of this novel CFRP material in bridges necessitates understanding some of the critical parameters …
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CFRP Prestressed Concrete Exposed to Moisture
… exposure, carbon fibre-reinforced polymer (CFRP) reinforcement is believed to be a good alternative to steel due to its non-corrosive properties. However the CFRP matrix experiences other types of changes, mechanical deterioration and transverse swelling, with exposure to moisture and …
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Shear strengthening of reinforced concrete beams with bi-directional carbon fiber reinforced polymer (CFRP) strips and CFRP anchors
… bounded Carbon Fiber Reinforced Polymer (CFRP) for strengthening existing RC structures has shown promising results. Although CFRP materials have high tensile strength, the ability to utilize that strength is limited by debonding of the CFRP laminates from the concrete surface. In order to …
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Characterization of Bistability Behavior in Unsymmetric CFRP Laminates
<p>Composite laminates of unsymmetric layup families often exhibit twin stable shapes at room temperature, a phenomenon known as bistability. Unsymmetric bistable composite laminates have often been suggested for applications in aerospace morphing structures, damping, and energy storage, because of …
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Fatigue behaviour of CFRP-repaired corroded RC beams
… assessed. This research is focused on the use of CFRP for the repair of corroded reinforced concrete beams. A series of twelve beams, four corroded and repaired with mortar, four corroded and repaired with mortar and strengthened with CFRP and four control specimens, were tested in fatigue. …
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Analysis and fabrication of paraboloidal CFRP sandwich mirrors.
… by using a non-heat curing process. The CFRP faces and Nomex core were chosen as the baseline materials for mirror fabrication due to their high strength and low weight. The proposed replication method applied an interface layer between face and surface coat to eliminate print-through …
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Fatigue Behaviour of CFRP Strengthened Reinforced Concrete Beams
… carbon fibre reinforced polymer (CFRP) laminates. Four-point bending monotonic loading tests were conducted on one (1) specimen from each damage extent. The results obtained from the quasi-static tests were used to determine two (2) cyclic loading stress ranges at which the …
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Predictive Modelling of CFRP-Steel Double Strap Joints
Carbon fiber reinforced polymers (CFRP), which can be used to strengthen and repair damaged steel structures, have gained popularity in recent years. On the one hand, CFRP has demonstrated substantial advantages over conventional reinforcing techniques like welding and bolting, such as light …
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Diamond-coated carbon fibres, the new generation of composites (CFRP)?
… is called Carbon Fibre Reinforced Polymer (CFRP). In recent decades, the proportion of CFRP composites used in aircraft fuselage and wing components has increased to more than 50%. The superior properties of CFRP compared to traditional materials such as titanium or aluminium alloys provide …
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A New CFRP-UHPC System for Strengthening Reinforced Concrete T-Beams
… is removed, and Carbon Fiber reinforced polymer (CFRP) laminates are attached to the existing concrete surface after which an Ultra High performance Concrete (UHPC) overlay is then cast on top of the CFRP. The hypothesis of this technique is that the very high compressive strength of the UHPC …
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Strengthening reinforced concrete slabs using a combination of CFRP and UHPC
Reinforced concrete (RC) structures are widely used in construction. Due to aging infrastructure, increased loads, and inadequate maintenance, RC structures need to be retrofitted for prolonged lifespan and increased capacity. Traditional methods of strengthening involve the installation of fiber …
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Reliability Analysis of Carbon Fiber Reinforced Polymer (CFRP) Strengthened Steel Beams
… steel and carbon fiber reinforced polymers (CFRP) with an emphasis on understanding the role of the adhesive mechanical properties and the surface preparation techniques used to produce the joints. Reliability analysis of adhesively bonded CFRP-to-steel double-lap shear (DLS) joints with thin …
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CFRP as Shear and End-Zone Reinforcement for Concrete Bridge Girders
… issue is carbon fiber reinforced polymer (CFRP) material. CFRP material has been implemented as flexural reinforcement in many cases, but not as transverse reinforcing. The CFRP material studied in this thesis was NEFMAC grid, which consists of vertical and horizontal CFRP tows that form an …
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Analysis of After Impact Characteristics and Structural Optimization of CFRP Composite Plate
… using carbon fiber reinforced polymer (CFRP) prepreg. The LVI testing was performed on the samples with different impactors and different impact energy levels. The X-Ray Micro-tomography technique helped to reveal the internal fiber damage and matrix damage of the impacted plate. …
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Retrofitting of reinforced concrete beams with CFRP straps to enhance shear capacity
… employs thin Carbon Fibre Reinforced Polymer (CFRP) straps for shear enhancement of reinforced concrete beams. Previous studies using these straps have employed steel pads on top of the beam to support the strap but this is problematic from a practical point of view. The initial goal of this …
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Retrofitting of reinforced concrete beams with CFRP straps to enhance shear capacity
… employs thin Carbon Fibre Reinforced Polymer (CFRP) straps for shear enhancement ofreinforced concrete beams. Previous studies using these straps have employed steel pads on top of the beam to support the strap but this is problematic from a practical point of view. The initial goal of this …
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Novel, low-cost, CFRP pressure vessel design for hydrogen fuel cell applications
… design of the Carbon Fibre Reinforced Plastic (CFRP) pressure vessel portion of the rocket. The pressure vessel was composed on a long, thin-walled commercial CFRP cylindrical tube that had two Poly Vinyl Chloride (PVC) end caps bonded onto either end with an adhesive. The inside wall of the …
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Debonding failure of CFRP reinforced concrete beams and in-situ monitoring schemes
Fiber Reinforced Polymer (FRP) systems have gained much popularity as a method for reinforcing existing concrete structures. However a variety of sudden failure methods, such as debonding, delamination, and creep rupture have led to the development of code limitations on the strength that an FRP …
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Shear Strength Assessment of Corrosion-Damaged Prestressed Concrete Girders Repaired With CFRP
… repaired using Carbon Fiber Reinforced Polymer (CFRP) to investigate how well proposed repairs functioned. One of the beams is an American Association of State Highway and Transportation Officials (AASHTO) Type II beam, while the second one is an adjacent box beam. Before repairs were done, the …
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