One-part alkali-activated blast furnace slag for sustainable construction at subzero temperatures
Highlights OP cement and one-part alkali-activated blast furnace slag (AAS) mortars were compared. Effects of subzero temperatures on hardened-state properties were determined. One-part AAS mortar gained a higher compressive strength. Compressive strength retrieval in AAS mortar after converting it to room temperature. Construction season in cold areas could be extended by using one-part AAS materials. Abstract The construction season is limited in northern countries due to the severe cold weather conditions and their detrimental impacts on concrete quality. Thus, there are excessive expenses required annually for insulation and energy-intensive heating systems for cold-weather concreting. This experimental study aimed to investigate the potential of using high-strength one-part alkali-activated blast furnace slag (AAS) in cold weather without the need for supplementary heating systems. Therefore, the impacts of different subzero curing temperatures on the hardened properties of one-part AAS mortar in comparison with…