Modeling and characterization of strengthened concrete tension members

The structural potential for cracking of externally strengthened concrete tension members, can be predicted with three parameters, describing the structural cracking potential based on fracture mechanical properties of the of concrete and interface between concrete and strengthening medium. With these parameters, it is possible to design reinforcement and obtain a required cracking behavior of a given structure. Design recommendations for single and multiple cracking of the tension specimen are given in terms of fracture mechanical parameters, and a structural stiffness parameter.

► Concrete tension member analyzed with fracture mechanics. ► We examine cracking behavior in different cases. ► Cracking behavior can be predicted with the theory. ► Design recommendations are given in terms of fracture mechanical constants.