Abstract
This paper introduces numerical investigation on mechanical performance of a concrete beam reinforced with Fibre Reinforced Polymer (FRP) bars, which can be competitive alternative to steel bars for enhancing concrete structures. The objective of this work is being identified as elaborating of reliable numerical model for predicting strength capacity of structural elements with implementation of Finite Element Analysis (FEA). The numerical model is based on experimental study prepared for the beams, which were reinforced with Basalt FRP (BFRP) bars and steel bars (for comparison). The results obtained for the beams reinforced with steel bars are found to be in close agreement with the experimental results. However, the beams reinforced with BFRP bars in experimental programme demonstrated higher bearing capacity than those reinforced with steel bars, which is not in a good convergence with numerical results. Authors did attempt to describe the reasons on achieving experimentally higher bearing capacity of beams reinforced with BFRP bars.
Highlights
In occasion, design service life of structures is drastically affected by highly corrosive environment
Basalt FRP (BFRP) bars characterised as a new variety of material which mechanical properties are not completely investigated
Three of them were reinforced at the bottom with BFRP bars of 8 mm diameter
Summary
Design service life of structures is drastically affected by highly corrosive environment. The corrosion of steel bars is a material problem rather than structural one. Instead of using common practices to eliminate corrosion, more durable materials can be used. The widespread implementation of FRP as a reinforcement for reinforced concrete elements requires: a comprehensive understanding of how each of these materials behaves alone as well as the behavior of the complete structural system [2]. In a certain circumstances, using of FRP bars can be considered as the substitute material to conventional steel in concrete detailing. If FRP is utilized as the internal reinforcement for concrete structures, it can provide high specific strength compared to the steel reinforcement [3, 4]. Exist common practice to use FRP bars in a range of structural applications, such as: prestressed concrete structures, foundations, road surfaces, parking, and bridges. BFRP bars characterised as a new variety of material which mechanical properties are not completely investigated
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