Description
Over the past few decades, the implementation of near-surface mounted (NSM) FRP has become a promising strengthening method for improving the performance of concrete structures. Despite the common use of epoxy adhesives in NSM FRP systems, concerns have arisen due to their drawbacks, including the emission of toxic fumes and reduced mechanical strength when subjected to elevated temperatures and moisture. To address these issues, cement-based adhesives have been introduced as a substitute bonding agent with the goal of enhancing the performance of concrete structures in high-temperature settings and minimizing environmental and health hazards. In this paper, new modified cement-based adhesives have been developed for the NSM FRP system for concrete structures. The efficiency of these adhesives was assessed through an experimental investigation involving pull-out testing using a single-lap shear test setup to study the bond behaviour of the NSM CFRP laminate for concrete structures. The results of these tests demonstrate the effectiveness of the NSM technique when new cement-based adhesives are utilized, as highlighted in this paper.
