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Mechanical and durability-related properties of one-part alkali-activated slag mortars

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Randomized trial evaluates mechanical and thermal properties of sustainable mortar, demonstrating its building material potential.

This research aims to evaluate the mechanical and durability-related properties of one-part alkali-activated slag mortars as a sustainable alternative to conventional materials.
AAS was formulated and activated with calcium hydroxide and sodium carbonate.
Compressive strength, drying shrinkage, and thermal conductivity were monitored over 112 days under various conditions.
The effects of PCE and MS were systematically tested across all evaluations.
AAS formulations showed compressive strengths of 8–20 MPa by 28 days, improving with PCE and MS.
The study reported surface strength suitable for repair mortars and confirmed thermal conductivity values lower than conventional cement mortars.
Additives significantly enhanced performance and mitigated sensitivity to storage conditions.

Pudelko et al. (2026) studied this question.

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