Bond properties between carbon fibre reinforced polymer (CFRP) textile and concrete using modified cement-based adhesive

•Experimental investigation of bond of NSM CFRP Textile using modified cement-based adhesive.•The results showed significant performance of the cement adhesive as a bonding agent with CFRP textile.•Excellent mechanical bonding properties have been achieved compared to externally bonding.•The results showed a considerable ductile behaviour of failure for all specimens using CFRP textile.

The bond between carbon fiber reinforced polymer (CFRP) composites and concrete surface is the key factor in strengthening systems of concrete structures. Near-Surface mounted carbon fiber reinforced polymer (NSM CFRP) has been used efficiently to increase the load-carrying capacity of concrete structures using epoxy adhesives. However, the toxic fumes, the flammability, and the degradation of mechanical properties at elevated temperatures are some of disadvantages associated with the use of epoxy adhesives. To overcome these disadvantages, modified cement-based adhesive has been used as a good alternative bonding agent for epoxy resin with NSM strengthening system. In this paper, full bond characteristics of near-surface mounted (NSM) CFRP textile and concrete using modified cement-based adhesive has been investigated and assessed using finite element modeling. Comparable bond properties of modified cement-based adhesive with NSM techniques have been achieved.