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This research aims to evaluate how calcination temperature of red mud and basalt fiber addition affect the properties of cement mortars.

July 26, 2026Scientific ReportsOpen Access

Mechanical performance of basalt fiber reinforced cementitious mortars incorporating calcined red mud

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Randomized trial examines mechanical performance in cement mortars with red mud and basalt fibers, indicating complex interactions.

This research aims to evaluate how calcination temperature of red mud and basalt fiber addition affect the properties of cement mortars.
Cement mortars incorporated 10% and 20% red mud, both uncalcined and calcined at 600 °C and 800 °C.
Basalt fibers added at 0.15% and 0.30% volume for performance assessment.
Microstructural analysis using X-ray diffraction, scanning electron microscopy, and mercury intrusion porosimetry.
Compressive strength decreased by up to 39.4% for mortars with 20% calcined red mud at 800 °C compared to control (28.76 MPa).
Basalt fibers improved flexural strength by up to 23%, helping to retain tensile strength despite red mud addition.
600 °C calcination refined pore structures, while 800 °C treatment led to increased macroporosity, negatively impacting strength.

Murat Öztürk (2026) studied this question.

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