A Literature Review on Enhancing Recycled Aggregate Concrete with Polypropylene Fiber Reinforcement

The demand for sustainable materials has increased interest in Recycled Aggregate Concrete (RAC). However, its lower mechanical and durability properties limit widespread application. Polypropylene fiber reinforcement enhances RAC by improving tensile strength, crack resistance, and ductility. This review examines experimental studies optimizing fiber content and discusses the role of supplementary materials like silica fume. Findings indicate that polypropylene fibers significantly improve compressive and tensile strength, shrinkage resistance, and cracking, making RAC a promising material for sustainable construction.