Compressive Strength and Chloride Permeability of Mortars with External Replacement of Various Cements by Recycled Concrete Powder

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This research evaluates the physical properties of recycled concrete powder and its effects on mortar performance.
Evaluated properties of recycled concrete powder from aggregate production.
Enhanced recycled concrete powder using ball mill mixing methods.
Added small amounts of silica fume to mortars with activated recycled concrete powder.
Measured compressive strength and chloride permeability of the mortars.
Demonstrated improved compressive strength of mortars with ordinary Portland cement and blast furnace cement B.
Notably, the addition of recycled concrete powder and silica fume increased compressive strength due to enhanced pozzolanic reactions.
Showed that chloride permeability was reduced regardless of the cement type used with the addition of recycled concrete powder.

Research evaluates compressive strength and chloride permeability in mortars with recycled concrete powder, indicating enhanced durability.

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Okunushi et al. (2026) studied this question.

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