What question did this study set out to answer?

The aim is to evaluate the mechanical properties of coir fiber reinforced concrete incorporating waste brick powder as a sand replacement.

March 6, 2026Scientific ReportsOpen Access

Study on the strength properties of coir fiber reinforced concrete containing waste brick powder dust as sand replacement

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Assesses concrete strength using waste brick powder and coir fiber, suggesting a sustainable alternative.

The aim is to evaluate the mechanical properties of coir fiber reinforced concrete incorporating waste brick powder as a sand replacement.
Analyzed concrete mixes with 0% to 40% waste brick powder and 0.5% to 2% coir fiber.
Performed slump, Vee-Bee, and compaction-factor tests for fresh mix properties.
Measured compressive, flexural, and split tensile strengths at 7 and 28 days.
Exposed specimens to acidic solutions (5% HCl and H2SO4) for 60 days to test durability.
Optimal mix was 10% waste brick powder and 1% coir fiber achieving 26.04 MPa compressive strength.
Showed improvements in flexural and split tensile strengths enhancing crack-bridging and matrix integrity.
Higher waste brick powder and fiber content slightly lowered workability and strength but remained suitable for use.
Exhibited lower strength and mass loss under acidic conditions compared to the control mix.

Palaniappan et al. (2026) studied this question.

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