scholarly journals Compressive behaviour of concrete-filled carbon fiber-reinforced polymer steel composite tube columns made of high performance concrete

2020 ◽  
Vol 234 ◽  
pp. 111668 ◽  
Author(s):  
Krzysztof Ostrowski ◽  
Mateusz Dudek ◽  
Łukasz Sadowski
Keyword(s):  
Carbon Fiber ◽  
High Performance ◽  
High Performance Concrete ◽  
Fiber Reinforced Polymer ◽  
Carbon Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Composite Tube ◽  
Compressive Behaviour ◽  
Reinforced Polymer ◽  
Steel Composite

scholarly journals Embedded carbon fiber-reinforced polymer rod in reinforced concrete frame and ultra-high-performance concrete frame joints

2019 ◽  
Vol 11 (S1) ◽  
pp. 35-51
Author(s):  
Shahnaz Basim ◽  
Farzad Hejazi ◽  
Raizal Saifulnaz Bin Muhammad Rashid
Keyword(s):  
Reinforced Concrete ◽  
Carbon Fiber ◽  
High Performance ◽  
High Performance Concrete ◽  
Fiber Reinforced Polymer ◽  
Carbon Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Ultra High Performance Concrete ◽  
Concrete Frame ◽  
Reinforced Polymer

AbstractBeam–column joints play an important role in providing lateral stiffness and integrity of frames during dynamic loading such as earthquake. In the high humidity areas, during functioning of the building cracks occur, which leads to the corrosion of the reinforcement due to the environmental exposures. Therefore, one of the main failures mechanism of building during an earthquake is caused by easily yielding of corroded steel reinforcement, which leads to reduce functionality of the frame joints in transferring the loads. This study proposed a new design to reinforce the beam-column joints with embedded carbon fiber-reinforced polymer (CFRP) rods, due to their extremely high strength and stiffness, along with the fact that they will not rust or corrode and very light weight. CFRP rods are used in reinforced concrete (RC) frame and ultra-high-performance concrete (UHPC) frame subjected to dynamic load. The prototype of the proposed design is constructed as frame with conventional concrete and frame with UHPC material to conduct experiments Test as well as numerical analysis to evaluate the performance of the proposed joints under dynamic loads. The results showed improvement in the performance of the frames reinforced with embedded CFRP in joints in terms of lateral load resistance capacity, ductility behaviour, overall stiffness, and failure mechanism.

Catalytic, Aerobic Depolymerization of Epoxy Thermoset Composites

2021 ◽  
Author(s):  
Carlos A. Navarro ◽  
Yijia Ma ◽  
Katelyn Michael ◽  
Hanna Breunig ◽  
Steven Nutt ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
High Performance ◽  
Fiber Reinforced Polymer ◽  
Carbon Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Aerobic Conditions ◽  
Thermoset Composites ◽  
Reinforced Polymer ◽  
Carbon Fiber Reinforced

We present here catalytic, aerobic conditions for depolymerization of amine-linked epoxy thermoset matrix polymers commonly used in the carbon fiber-reinforced polymer (CFRP) materials that serve high-performance applications such as aerospace,...

scholarly journals Carbon fiber reinforced polymer (CFRP) inserted in different configurations of the tensile zone retrofitting with microconcrete containing steel fibers to the strengthening of beams

2016 ◽  
Vol 38 (4) ◽  
pp. 437
Author(s):  
Vladimir José Ferrari ◽  
Ana Paula Arquez ◽  
João Bento de Hanai
Keyword(s):  
Carbon Fiber ◽  
High Performance ◽  
Steel Fibers ◽  
Fiber Reinforced Polymer ◽  
Carbon Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Near Surface ◽  
Reinforced Polymer ◽  
Tensile Zone ◽  
Carbon Fiber Reinforced

It is researched, in this study, the strengthening technique known as Near Surface Mounted (NSM), which consists of the insertion of laminates of Carbon Fiber Reinforced Polymer (CFRP) into notches in the covering concrete structures. In the strengthening in beams, the tensile zone is found damaged for several reasons (cracking and corrosion, for instance), which demands, in the practice of engineering, its preliminary retrofitting. It should be considered that the good performance of the material used in this retrofitting is fundamental for a higher efficiency of the strengthening. Therefore, it is proposed a methodology that consists of the reconstitution of the tensile zone of the beams with a cement-based composite of high performance (CCAD), which acts as a substrate for the application of CFRP and as an element for the transfer of efforts to the part strengthened. The retrofitting of this tensile zone was performed only in the shear span, as well as throughout of the zone with a view to evaluating the influence of this aspect on the performance of the beams. The CCAD, produced from Portland cement, steel fibers and microfibers, was evaluated using the Rilem (2002), showed to be able to delay the cracking. Tests performed in the beams with the tensile zone retrofitting by CCAD and strengthening using the technique NSM showed the efficiency of the proposed methodology.

New unibody clamp anchors for post-tensioning carbon-fiber-reinforced polymer rods

PCI Journal ◽  
2014 ◽  
Vol 59 (1) ◽  
pp. 103-113 ◽  
Author(s):  
Clayton A. Burningham ◽  
Chris P. Pantelides ◽  
Lawrence D. Reaveley
Keyword(s):  
Carbon Fiber ◽  
Fiber Reinforced Polymer ◽  
Carbon Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Reinforced Polymer ◽  
Carbon Fiber Reinforced ◽  
Post Tensioning ◽  
Polymer Rods
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