Concrete Fiber Buying Guide 2026: Steel vs PP vs Macro-Synthetic
Steel, polypropylene and macro-synthetic concrete fibers deliver 20–80 MPa flexural gains at 0.3–1.5% volume fraction per ACI 544.3R-2008, with steel at $800–$1,800/t, PP at $2–$6/kg, and hooked-end rebar-replacement grades dominating slab-on-grade 2026 specs.
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