Flexural rigidity and ductility of RC beams reinforced with steel and recycled plastic fibers

• DOI: 10.12989/scs.2021.41.3.317
• Publication Date: 2021-01-01
• Authors: Walid Mansour; Sabry Fayed
• Keywords: Volume fraction; Flexural rigidity; Ductility (Earth science); Fiber Reinforced Concrete

This study compares between the mechanical properties of concrete either reinforced with recycled plastic (RP) or end-hooked steel (EHS) fibers volume fractions 1, 2 and 3%. Also, effects fiber type fraction on flexural responses were investigated using experimental program composed seven (RC) beams. Generally, results showed that RP EHS remarkably enhanced both characteristics capacity RC Specifically, matrix 2% exhibited highest capacities among all tested specimens. On other hand, compressive tensile strengths fibrous which strengthened 3% (either fibers) lower than their counterparts (2%). As increased up to 2%, peak load beams followed by a reduction for higher volumes. The beam specimens 57.1 kN 60.7 kN, respectively compared 39.6 control beam. Both had positive effect (effective/gross) rigidity ratio, especially when used 1% yielded ductility in comparison An analytical model constructed based distribution stress-strains along height was estimate bending moments at different stages. Results well agreed records.