Load-deflection analysis of concrete elements reinforced with FRP rebars

The behavior of fiber reinforced plastic (FRP) concrete elements under serv ice conditions is analyzed. Taking into account the real constitutive law o f materials and local bond-slip law which adequately describes the interact ion between the FRP reinforcement and concrete, a numerical procedure is pr oposed for obtaining moment-curvature relationships for a cracked beam elem ent. Using the moment-curvature laws, the load-deflection analysis of FRP c oncrete beams is carried out. To study the influence of geometric and mecha nical parameters, a numerical investigation was carried out and the results obtained were compared with those from other methods and Codes. The result s of the experimental investigation are described and compared with those o f the proposed procedure; the comparison shows good agreement between the t heoretical and experimental results.