Effectiveness of Hybrid Fibers on the Fracture and Shear Behavior of Prestressed Concrete Beams

This study investigates the effectiveness of hybrid fibers (steel and macro-synthetic) on shear behavior prestressed concrete beams. The fiber combination was selected to avoid workability issues at high volume dosages ensure effective crack arresting over opening range. Fracture studies included testing notched prisms identify role in bridging mechanism. Seven reinforced (HFRPC) beams were tested a low span (a) depth (d) ratio 2.4. effects load–deflection strain strand are reported. Similarly, opening, slip angle variation regarding applied investigated using digital image correlation (DIC) technique. Test results HFRPC showed considerable improvements peak load post-peak response with higher dosage. measurement across major revealed continuous dilatant behavior. kinematic critical reflects sustained dilation up ultimate load, which depends As dosage increases, width reduced, indicating roles improving ductility change failure mode from brittle tension relatively ductile tension.