State-of-the-art review on strengthening elements of steel bridges using CFRP

In the last few decades, the use of carbon fibre reinforced polymer (CFRP) for strengthening structures has attracted structural engineers due to its superior properties, such as its high strength toweight ratio, corrosion resistance and ease of installation. Retrofitting of deteriorated structures is required to sustain new applied loads or to enhance degraded elements. Previous studies focused on the investigation of bond behaviour between CFRP and steel members under static and fatigue loadings. However, there is a lack of understanding of strengthening of steel members subjected to static and dynamic loads using CFRP. This paper presents a review of previous research on the behaviour of steel members strengthened with CFRP and subjected to static and dynamic loadings. Topics covered by the state-of-the-art review include torsional, axial, flexural and impact loadings. In addition, a range of parameters is included for each loading case, such as different cross-sections, load speeds and types of composite material.