What does this research mean for the field?

Incorporating 10% biomass fly ash into diatomite and iron dust-based alkali-activated binders maximizes compressive strength, whereas higher concentrations improve water resistance at the cost of significant strength reduction, demonstrating a trade-off between strength and durability. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

Evaluate the impact of biomass fly ash content on the mechanical properties, durability, and microstructure of diatomite and iron dust-based alkali-activated binders.

September 5, 2026MaterialsOpen Access

Impact of Biomass Fly Ash on the Performance of Diatomite and Iron Dust Powder-Based Alkali-Activated Binder

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Evaluate the impact of biomass fly ash content on the mechanical properties, durability, and microstructure of diatomite and iron dust-based alkali-activated binders.
Formulated alkali-activated binders using reactive diatomite silica and iron dust modified with 10%, 20%, and 30% biomass fly ash (BFA).
Assessed compressive strength, softening factor, water resistance, and structural stability after thermal exposure at 200 °C.
Characterized mineralogical composition and structural network development using X-ray diffraction (XRD) and Fourier-transform infrared (FTIR) spectroscopy.
Binders formulated with 10% BFA achieved the highest compressive strength of 53 MPa, which decreased to 33 MPa after thermal exposure at 200 °C.
Increasing BFA to 20% and 30% improved the softening factor and water resistance but dropped compressive strength to below 20 MPa and below 10 MPa, respectively.
FTIR showed increased polymerization via Si–O–T band shifts from ~966–985 cm⁻¹ to ~988–995 cm⁻¹, while XRD identified largely unreacted quartz and magnetite with minor andradite formation after heating.

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Implication

Experimental study demonstrates that 10% biomass fly ash optimizes compressive strength in diatomite-iron dust binders, indicating a trade-off between mechanical strength and water durability.

Cite This Study

Žūrinskas et al. (2026) studied this question.

synapsesocial.com/papers/6a9bd4436b95aff0620ebd6f https://doi.org/10.3390/ma19173746

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Implication

Experimental study demonstrates that 10% biomass fly ash optimizes compressive strength in diatomite-iron dust binders, indicating a trade-off between mechanical strength and water durability.

Impact of Biomass Fly Ash on the Performance of Diatomite and Iron Dust Powder-Based Alkali-Activated Binder

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Discussion

Implication

Cite This Study

Impact of Biomass Fly Ash on the Performance of Diatomite and Iron Dust Powder-Based Alkali-Activated Binder

Key Points

Discussion

Implication

Cite This Study

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