Polypropylene Fibers in Cementitious Composites: A Critical Review of Polymer Structure, Processing, Interfacial Behavior, and Performance
Polypropylene (PP) fibers are widely used as secondary reinforcement in cementitious composites, yet their performance is governed as much by polymer structure and interfacial chemistry as by dosage. This review synthesizes 55 primary sources (2003–2025, concentrated post-2015) to examine how PP molecular structure, fi...