Additionally, the flexural strength of the GMPF samples with a 3.0 vol% polypropylene fiber dosage shows a decreasing trend, with a 7.1% decrease compared to the preceding group.
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Properties of Fiber-Reinforced Geopolymer Mortar Using Coal Gangue and Aeolian Sand
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The sentences
Furthermore, polypropylene fibers significantly improved the matrix’s flexural toughness, which showed an increasing trend with higher fiber content.