• Dr. Vathsala
• Dr, H N Jagannatha Reddy

Abstract: Changes in the purpose of structure usage, errors in design and in construction, upgradation in codal provisions, and reduction in strength due to corrosion of steel reinforcement are conditions that often call for the strengthening of RC structures. So for the strengthening of structures is confined to the use of artificial fibres like carbon, glass or aramid fibres etc, very little work is being conducted to improve the performance of structures using natural fibres. Among the various natural fibres, coir fibres are of particular interest as these composites have high impact strength besides having moderate tensile and flexural properties compared to other lignocellulosic fibres. An investigation was conducted experimentally, to study the behaviour of strengthened concrete slabs using Natural Coir Fiber Reinforced Polymers (NCFRP) and Natural Sisal Fiber Reinforced Polymers (NSFRP). Totally 9 number of scaled models of reinforced concrete (RC) slabs were cast and tested statistically under uniformly distributed load, out of which 3 slabs were control slabs, another three slabs were strengthened using NCFRP and the remaining 3 slabs were strengthened with NSFRP. The support condition was simply supported on all four sides of the slab. The focus was on the aspect of the structural behaviour of RC slabs strengthened by externally bonded fibre at the flexural zone. Studies on the load-deflection characteristics, the load-carrying capacity of all the slabs were carried out. From the experimental result, it was found that the load-carrying capacity of strengthened slabs was enhanced significantly compared to control slabs.

Natural Coir Fiber, Natural Sisal Fiber, Strengthening of RCC slab

"STRENGTHENING OF REINFORCED CONCRETE SLAB USING COIR AND SISAL FIBERS ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 5, page no.f431-f437, May-2022, Available :http://www.jetir.org/papers/JETIR2205662.pdf

"STRENGTHENING OF REINFORCED CONCRETE SLAB USING COIR AND SISAL FIBERS ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 5, page no. ppf431-f437, May-2022, Available at : http://www.jetir.org/papers/JETIR2205662.pdf