This review synthesizes research on the effect of polypropylene fibers on compressive strength and durability of zeolite-based concrete to address variability and knowledge gaps in fiber-reinforced sustainable cementitious composites. The review aimed to evaluate polypropylene fibers’ impact on compressive strength, benchmark durability improvements, identify microstructural modifications, compare fiber types, and assess sustainability implications. A systematic analysis of experimental studies employing diverse fiber dosages, zeolite replacement levels, and microstructural characterization techniques was conducted. Findings indicate that polypropylene fibers typically enhance compressive strength by 7–15% through crack bridging and load transfer mechanisms, while concurrently improving durability metrics such as permeability, chloride resistance, and freeze-thaw performance via matrix densification and pore refinement. Microstructural analyses reveal fiber-induced interfacial transition zone improvements and secondary hydration product formation, although excessive fiber content may increase porosity due to agglomeration. Comparative evaluations show polypropylene fibers offer superior ductility and toughness relative to steel and polyolefin fibers, with hybrid fiber systems further optimizing mechanical and shrinkage behaviour. The combined use of zeolite and polypropylene fibers supports reduced cement content and enhanced eco-friendly concrete performance. These integrated findings underscore polypropylene fibber’s role in advancing sustainable concrete design, while highlighting the need for standardized methodologies and long-term durability assessments to optimize fiber-zeolite composites for practical applications.
Sharma et al. (Tue,) studied this question.
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