Volume 20 No 22 (2022)
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Dr. S. N. Mahadik , Dr. P. D. Gunaware , Dr. V. N Patil, S. N. Divekar, and R. S. Khamkar
Shear walls are the walls provided in structures for the improvement of the seismic resistance of building structures. These generally span right from the bottom of the structure to its top and resist wind or seismic forces along the plane. Strength, stiffness, and ductility are the important parameters in the seismic resistance of any building. Shear walls require a huge reinforcement in boundary element to resist the flexural moment, which creates congestion of reinforcement in boundary element and it causes a problem in placing and proper compaction of concrete in a lower section. Another issue with a shear wall is the formation and propagation of cracks in the critical region during several cycles of repetition of seismic excitation. Though buildings are designed and constructed as shear walled buildings, there are some evidence of the failures of shear walls and also of complete buildings during past strong earthquakes. In view of improvement in the behavior of shear wall, initially, optimum percentage of steel fiber in concrete was investigated which was observed as (1.5%). Steel fiber reinforced concrete (SFRC) with 1.5 percentage steel fibers is tried in the present study to study its effectiveness in shear walls.Percentage increase in loadcarrying capacity and deformation capacity was observed as 18.42 % and 35.54 % respectively. A remarkable improvement was also observed in stiffness, energy dissipation, crack pattern of the shear wall using steel fiber concrete (SFRC) for the construction of the shear wall. No significant change was observed in strain behavior.
shear wall, SFRC, strength, stiffness, ductility, energy dissipation
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