What does this research mean for the field?

Incorporating 15-20 wt.% iron mining waste rock into unfired clay bricks stabilized with lime or gypsum significantly improves their physical, mechanical, and thermal insulation properties. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To assess the feasibility of producing sustainable unfired clay bricks stabilized with lime or gypsum by recycling iron ore mining waste rock.

August 23, 2026International Journal of Construction Management

Innovative approaches for producing unfired bricks: a sustainable construction solution using iron ore mining waste

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Authors

BHBOUZERIBA HadjerUniversity of Béjaïa NBNedjima BouzidiUniversity of Béjaïa ILI LaalaUniversity of Béjaïa

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Implication

Experimental evaluation reveals enhanced compressive strength and low thermal conductivity in unfired clay bricks using iron mining waste, suggesting viable pathways for sustainable construction.

Key Points

To assess the feasibility of producing sustainable unfired clay bricks stabilized with lime or gypsum by recycling iron ore mining waste rock.
Manufactured unfired clay bricks incorporating 0 to 25 wt.% iron mining waste rock alongside lime and gypsum stabilizers.
Assessed linear shrinkage, water absorption, porosity, compressive strength, and thermal conductivity.
Characterized material properties using Toxicity Characteristic Leaching Procedure (TCLP), Scanning Electron Microscopy (SEM), and FTIR.
Incorporation of 15–20 wt.% iron mining waste rock produced optimal physical and mechanical performance, reducing linear shrinkage, water absorption, and porosity.
Compressive strength reached 10.89 MPa in lime-stabilized bricks and 12.45 MPa in gypsum-stabilized bricks.
Thermal conductivity ranged between 0.52 and 0.60 W/mK, demonstrating favorable thermal insulation characteristics.

Cite This Study

Hadjer et al. (2026) studied this question.

synapsesocial.com/papers/6a8aad667677a34114445849 https://doi.org/10.1080/15623599.2026.2717273

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Implication

Experimental evaluation reveals enhanced compressive strength and low thermal conductivity in unfired clay bricks using iron mining waste, suggesting viable pathways for sustainable construction.

Innovative approaches for producing unfired bricks: a sustainable construction solution using iron ore mining waste

Discussion

Member takes

Implication

Key Points

Cite This Study

Innovative approaches for producing unfired bricks: a sustainable construction solution using iron ore mining waste

Discussion

Member takes

Implication

Key Points

Cite This Study

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