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Table 2 The physical and mechanical properties of polypropylene fibers.

From: Experimental Investigation on the Mechanical Properties of Polypropylene Hybrid Fiber-Reinforced Roller-Compacted Concrete Pavements

Fiber type Diameter/mm Length/mm Aspect ratio Tensile strength/MPa E/GPa Elongation/% Density/g·cm−3 Alkali resistance /% Recommended content/kg m−3
FF1 0.026 19 730.77 641 4.5 40 0.91 99.8 0.9
FF2 0.1 19 190 472 5.8 19.9 0.91 99.8 0.9
CF 0.8 50 62.5 706 7.4 10.0 0.95 99.7 6.0