Effects of Anhydrite and Hydration Heat on Strength Development and Drying Shrinkage of High-Strength Concrete With Ground Granulated Blast-Furnace Slag

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This research aims to investigate how anhydrite and hydration heat affect the strength and drying shrinkage of high-strength concrete containing ground granulated blast-furnace slag.
Examined various proportions of anhydrite and slag in concrete mixtures.
Used a water-to-binder ratio of 30% and slag replacement rates of 0% and 40%.
Conducted curing at 20°C and with simplified insulation.
Measured compressive strength and drying shrinkage across different conditions.
Compressive strength decreased with increased slag content, showing minor strength differences with anhydrite addition at 20°C.
Long-term strength development during simplified insulation curing stagnated.
Drying shrinkage at 20°C decreased with slag addition and further decreased with anhydrite.
Drying shrinkage in simplified insulation was lower than at 20°C, showing similar levels across all cases.

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Examines strength development and drying shrinkage in high-strength concrete with slag, suggesting implications for construction materials.

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TANI et al. (2026) studied this question.

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