An Experimental Study on the Bond Strength of Basalt FRP bars partially Replacing Coarse Aggregates with Steel Slag Aggregates

Abstract

The bond stress system of the force transmission between the steel bar and the surrounding concrete is the basis for the existence of reinforced concrete. Without proper stress transfer between concrete and steel bars, it is not possible to use reinforced concrete structures without end anchoring. In order to construct a more durable reinforced concrete structure, corrosion of the steel bars should be prevented under the most severe environmental conditions. One possible approach is to replace traditional steel bars with basalt fiber reinforced polymer (BFRP). Despite extensive research in this area, the use of FRP as a built-in reinforcement in new structures is relatively slow. The use of concrete in the construction industry has wide range of application. Many materials can be reused in concrete in different forms. Steel slag aggregates have nearly similar properties compared to conventional aggregates and can be obtained in large quantities. This paper presents the effect on the bond strength of Basalt Fibre Reinforced Polymers (BFRP) bars and steel slag aggregates. Test parameters are Basalt FRP bars, HYSD bars and bar diameters. Total forty eight cylinders of diameter 100mm and height 250mm were casted. Concrete specimen of M30 grade in which steel slag aggregates were replaced by 40% in the twenty four specimens. All Basalt FRP bars and HYSD bars specimens of 6mm?, 8mm?, 10mm? & 12mm? failed in pullout test