Yardımcı, Mert YücelDai, XiaodiAydin, SerdarYardimci, Mert YucelLesage, KarelDe Schutter, Geertİnşaat Mühendisliği / Civil Engineering2024-05-252024-05-252020790008-88461873-394810.1016/j.cemconres.2020.1062532-s2.0-85092186018https://doi.org/10.1016/j.cemconres.2020.106253https://hdl.handle.net/20.500.14517/2197The effects of ground granulated blast furnace slag/fly ash (GGBFS/FA) ratio, mass ratio of SiO2 to Na2O (M s ) of activator solution and sodium silicate dosage on structural build-up, flow properties and setting characteristics of alkali-activated cement (AAC) mixtures were investigated. The solid-like behavior becomes more dominant with increasing GGBFS/FA ratio. M, value had significant effect on the structural build-up. Significantly higher initial storage modulus with a low increasing rate was observed for the M, values lower than 0.8. However, for higher M, values, a sudden increase in storage modulus was observed after negligible initial structuration. An increase in sodium silicate dosage caused a considerable delay in the abrupt increase in the structural formation. It was observed that flow curves of AAC fit the Herschel-Bulkley model with shear-thickening behavior. ICP-OES tests revealed the lower release of aluminum and calcium into the pore solution of GGBFS/FA mixtures with low M, values.eninfo:eu-repo/semantics/closedAccessAlkali activated cement (D)Ground blast-furnace slag (D)Fly ash (D)Rheology (A)Pore solution (B)Structural build-upArticleQ1Q1138WOS:000589900300014