Recycling of Macro-Synthetic Fiber-Reinforced Concrete and Properties of New Concretes with Recycled Aggregate and Recovered Fibers

The study aims to investigate the feasibility of using recycled aggregate (RA) and recovered fibers (RFs) obtained from recycling polypropylene fiber-reinforced concrete (PPFRC) in new production. mechanical properties were compared between a parent PPFRC, (PPRAC), fiber (Re-PPRFC). All concretes designed have same compressive strength slump. was produced with 3 9 kg/m3 fibers. After recycling, RA RF collected, RF, PPRAC Re-PPRFC, respectively, content as concretes. Both flexural tensile (pre- post-cracking) characterized stress–strain relations derived accordingly. results for different compared, proving that by PPFRC can benefit design-oriented (workability performance)