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Ouyang, Xiaowei (author), Ma, Yuwei (author), Liu, Ziyang (author), Liang, Jianjun (author), Ye, G. (author)This paper presents the results of an experimental study performed to investigate the effect of activator modulus (SiO<sub>2</sub>/Na<sub>2</sub>O) and slag addition on the fresh and hardened properties of alkali-activated fly ash/slag (AAFS) pastes. Four activator moduli (SiO<sub>2</sub> /Na<sub>2</sub>O), i.e., 0.0, 1.0, 1.5, and 2.0, and...journal article 2020