Performance of Steel Fibre Reinforced Concrete Beams Containing Conventional Reinforcement Under Corrosive Environment

Abstract

Concrete is one of the most widely used construction materials globally, owing to its exceptional compressive strength and durability. However, the susceptibility of reinforced concrete structures to corrosion in aggressive environments has long been a challenge for the construction industry. Corrosion in steel reinforcement initiates a sequence of degradation, starting with rust formation, weakening the bond between steel and concrete, and leading to delamination and spalling. This not only compromises structural integrity but also escalates maintenance costs. newlineA promising solution lies in incorporating steel fibres (SFs) into concrete, forming steel fibre reinforced concrete (SFRC). SFRC has garnered recognition for its capacity to augment mechanical properties and mitigate cracking in concrete, thereby bolstering its overall durability. Furthermore, the combination of conventional reinforcement with steel fibres offers a multifaceted strategy to address the intricate challenge of corrosion in reinforced concrete beams. SFRC exhibits improved crack resistance, ductility, and energy absorption capacity. The presence of steel fibres within the concrete matrix creates a three-dimensional reinforcement system, which not only resists crack propagation but also inhibits the penetration of aggressive ions. newline newline