Browsing by Author "Dineshkumar, G."

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    Enhancing PVCC beam performance through PVA fiber and basalt fabric in sustainable construction: ductility, strength, and energy absorption improvements
    (Universidade Federal do Rio de Janeiro, 2024) Prasanthni, P.; Priya, B.; Palanisamy, T.; Dineshkumar, G.
    This study evaluates the performance of PVCC (Polyvinyl Alcohol Cementitious Composite) layered beams (BP1 to BP5), basalt fiber fabric-wrapped beams (BB1 and BB2), and a control beam (B0). Results show that specimen BP3, with 1.2% PVA fiber in PVCC layered beam, and BB2, with basalt fiber fabric wrapped at the bottom up to the neutral axis, exhibit superior performance. BP3 delays first crack initiation, increases the ultimate load-carrying capacity by 19.87%, and achieves a remarkable 54.57% increase in maximum ductility compared to B0. BP3 also demonstrates 54.54% higher stiffness and notable energy absorption. Similarly, BB2 outperforms BB1 and B0 in first crack load, ultimate load carrying capacity, ductility, stiffness, energy absorption, and energy index. BB2 exhibits 2.10 times increase in ductility compared to B0. Incorporating PVA fiber in PVCC layered beams and basalt fiber fabric wrapping offers better improvements in crack resistance, load capacity, ductility, stiffness, and energy absorption, contributing to innovative and sustainable beam design in construction. © 2024, Universidade Federal do Rio de Janeiro. All rights reserved.
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    Influence of basalt fiber on the behavior of beam - column joint under cyclic loading
    (Elsevier Ltd, 2023) Dineshkumar, G.; Palanisamy, T.
    Beam-column joints are immensely complicated areas of reinforced concrete constructions. The strengthening of such components can have a significant impact on the earthquake resistant constructions because the rapid collapse of a building could occur if these beam-column joints fail. Recently, designing of reinforced concrete beam-column joints to resist earthquake load becomes more important using ductile design and high strength material. The fibers addition in a concrete directs to an improvement in cracking resistant, ductility, deformation and energy absorption capacity. However, there are currently many distinct types of fibres with various materials and geometric features are used in fiber reinforced concrete to improve the above said properties. The use of basalt fibre, an alternative material made from natural sources that comes from volcanic rock, is the main topic of this essay. The beam-column junction was used to assess the structural behaviour parameters for basalt fibre reinforced concrete, including load–deflection behaviour, ductility, stiffness value, energy absorption capacity, and energy index. From this work, it shows that the natural based basalt fiber shows excellent structural behavior when compared to control concrete. Basalt Fiber Reinforced Concrete (BFRC) has the potential for widespread application in the construction of concrete structures as well as in earthquake-prone regions. © 2023