September 10, 2025Materials Research ExpressOpen Access

Structure and mechanical properties of fiber-reinforced fly ash cement mortar

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Fiber reinforcement improves structural integrity, but excessive fly ash can weaken cement mortar.
The study identified an optimum fly ash content of 4.45 wt%, enhancing workability and mechanical properties.
Carbon fiber showed the best interface bond strength, leading to superior flexural and compressive strength in the mortar.
Mechanical tests revealed the 28-day flexural strength to be 18.0 MPa, with compressive strength at 109.8 MPa.

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This analysis reveals how basalt, carbon, and high-silica fibers enhance cement mortar properties, indicating optimum fly ash content.

Qi et al. (2025) studied this question.

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