New model for the indirect determination of the tensile stress-strain curve of concrete by means of the Brazilian test

On the basis of the results from an experimental campaign and using simple expressions, a model for the indirect determination of the tensile stress-strain curve of concrete by means of a splitting tensile test (Brazilian test) is proposed. By testing complete specimens as well as specimens cut along the loading plane it was possible to determine the equivalent tensile strength component produced in the cylinder subjected to diametral compression. The model made it possible to reproduce adequately the behavior observed in tests carried out with both cylindrical and cubic specimens of materials such as concrete, mortar and rock. This model, if complemented with a more extensive experimental campaign, would provide an expression for the determination of the tensile stress-strain curve of several concretes or quasi-fragile materials.