Crack modeling of steel–carbon hybrid FRCCs

An experimental study to investigate nonlinear material behavior in tension of steel–carbon hybrid fiber reinforced cementitious composites (FRCC) was performed. In the tests, tensile strength, toughness index, and fracture properties, including fracture energy and crack opening or elongation, were measured. Based on the test results, a fictitious crack model for steel–carbon hybrid FRCC was developed. The proposed crack model was verified by comparing its predictions with the test results. Acceptable accuracy in simulating the tensile behavior of steel–carbon hybrid FRCC was obtained. For convenience in design and structure analysis, simplified equations to predict tensile strength and fracture energy in hybrid FRCC were developed.