Influence of FRP wrapping techniques on the compressive behavior of concrete prisms

Results of an experimental investigation on the compressive behavior of concrete prisms with square cross-section, externally wrappedwith carbon fiber reinforced plastic (CFRP) sheets are presented. The effects of the following parameters were analyzed: local reinforcementat the corners and continuous layers; horizontal and vertical discontinuous strips; number of continuous layers—length ofspecimens.An analytical model is proposed to determine the maximum bearing capacity of compressed concrete members with square crosssectionand externally wrapped with FRP for the different configurations examined, and also able to consider the strength reduction withthe length increase of concrete members. Analytical results are then compared with the experimental data available in the literature,showing good agreement.