Abstract
Nowadays natural fibers are getting attention from researchers and scholars to use it for construction of buildings because of their sustainability and eco friendly nature. There are various natural fibers like bamboo, sugarcane fiber, coconut coir, sisal fiber, flax fiber etc., are available for construction. Aim of this paper is to give a detailed study about various experiments conducted on the reinforced concrete structure that are strengthened with fiber laminate. The failure load, ductility, crack pattern, strength properties, flexural behavior of reinforced concrete beam, viscous and mechanical properties and strain characteristics of strengthened beams with different natural fiber composite laminates are reviewed. The result shows that the strength, ductility and durability properties of concrete are increased according to their proportions.
Highlights
Reinforced concrete structures detoriates with a result of corrosion of internal reinforcement, poor interior design and freezing and thawing action
Natural fibres like coconut fibre, flax fibre, bamboo fibre, hemp fibre, sisal fibre and hemp fibre are extensively used for making laminates
The results demonstrate that hemp fabric reinforced bioepoxy composites offer similar if not superior flexural properties, due to an improved fibre/matrix interface, and damage tolerance compared to those based on traditional epoxy resin. [14]
Summary
Reinforced concrete structures detoriates with a result of corrosion of internal reinforcement, poor interior design and freezing and thawing action. Repairing and strengthening of reinforced concrete beam becomes a worldwide problem. There are various retrofitting methods available for strengthening of concrete structures. Nowadays the reinforced concrete flexural member such as slab and beams strengthened with procured fibre reinforced laminates has been extensively studied in recent years. Laminates made with natural fibres provides both technical and environmental advantage due to their renewable nature and low density. Natural laminates are available and eco-friendly in nature. Natural fibres like coconut fibre, flax fibre, bamboo fibre, hemp fibre, sisal fibre and hemp fibre are extensively used for making laminates. According to the necessity and fibre properties, the fibres are selected for retrofitting of reinforced concrete structures
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