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In general, Reinforced Concrete structures exposed to much vulnerable climate leads to corrosion of the steel reinforcement, which results the huge loss of durability, serviceability. Carbonation or chlorides are the reasons of corrosion in reinforcement of steel. Carbonation is the reaction of carbon dioxide in the air with calcium in the concrete. Hence, Fibre Reinforced Polymer rebars which is resistant to corrosion can be replaced with steel reinforcement. So, from the past decade, many researchers are studying the usage of FRP rebars as they are anti-corrosive, high tensile strength, non-magnetic, lightweight, high temperature resistant, low maintenance, and durable. The FRP rebar has the disadvantage of possessing the low ductility and it is not able to bend in required shape. Hence, the hybrid reinforcement is introduced in the concrete structures to enhance the ductility and corrosion requirements. This paper will give brief review on specific application of FRP bar in terms of cost effectiveness, ductility, load carrying capacity and failure modes. [ABSTRACT FROM AUTHOR]

The building industry's ever-changing dynamics have resulted in the introduction of new materials from time to time. Glass fiber reinforced polymer (GFRP) bars are gradually replacing traditional steel bars in RCC work. The traditional structures are much affected with corrosion which reduces the long-term performance in terms of flexural capacity and hence FRP (fiber reinforced polymer) are introduced in the study as they are lightweight, high tensile strength, nonmagnetic. The most disadvantage of the FRP bar is the Brittleness. Hence Hybrid reinforcement is induced to improve flexural performance and ductility. This project work was studied on a different type of FRP bars, their mechanical properties, and effectiveness. Hence from the study, it is known that GFRP is the most effective in terms of cost and performance. The adaptability of GRRP, which has a higher strength-to-weight ratio, corrosion resistance, durability, and stiffness than traditional steel bars, is responsible for this significant shift in construction practice. However, because GFRP is prone to rapid and brittle failure due to its linear stress-strain behavior, reinforcing fibers are utilized in combination to offer structural safety. [ABSTRACT FROM AUTHOR]

Fibre Reinforced Polymer has been used to eliminate deterioration of steel from corrosion, cost effectively and to make it available for all structural uses. This paper will give a review on effective type of FRP bar among Glass, Basalt, Carbon, Aramid Fibre Reinforced Polymer bars in terms of ductility, flexural performance and cost. In the study it has been found that many polymers have been used to strengthen the RC structure in various orientation of polymers for their respective strengthening criteria like moment capacity, shear capacity as they are light in weight, high tensile strength, anti-corrosive & non-magnetic. The main disadvantage of FRP bar is its brittleness. Hence, hybrid FRP bars are introduced to improve its ductility and flexure performance. Among all the polymers GFRP was cost effective, easily available and a material with required structural qualities which can replace steel partially. GFRP was used in many forms like bars, fabric sheets etc., based on the requirement and ability to develop a bond & ease of placing. However, steel could not be replaced totally but there was significant increase in strength and ductility when GFRP was used. From the study, it was concluded that the arrangement of GFRP bars shall be placed around the corners so as to enhance ductility and to avoid corrosion [ABSTRACT FROM AUTHOR]

A feasible replacement for steel reinforcement is offered in reinforced-concrete construction Steel reinforcing corrodes with time, lowering the capacity of a reinforced concrete structure. Some concrete structures have utilized composite fiber reinforced polymer (FRP) reinforcement as a steel substitute; however, this corrosion-resistant alternative comes at the expense of the structure's flexibility. FRP reinforcement is now manufactured in a linear elastic (or brittle) state till failure. The suggested hybrid rebar is made up of multiple types of fibers that fail at different strains during the rebar's load history, allowing for gradual rebar failure. Experiments on concrete beams reinforced with glass fiber reinforced polymer are described in this paper (GFRP) The effect of mixing GFRP bars was explored in detail, and the independent behavior of GFRP reinforced beams was evaluated. In addition, existing analytical methods for predicting the shear strength of GFRP and steel fiber reinforced beams were examined and compared. Based on the findings, the best model for predicting the shear strength of GFRP reinforced beams with steel fibers were chosen and changed. [ABSTRACT FROM AUTHOR]