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Chen, Y. (author), He, S. (author), Zhang, Y. (author), Wan, Z. (author), Copuroglu, Oguzhan (author), Schlangen, E. (author)This paper aims to investigate the influences of high Portland cement substitutions (>60 wt%) by low-grade calcined clay (CC) and limestone (LF) on 3D concrete printability, stiffness evolution and early-age hydration. Results show that, with the same dosage of admixtures (superplasticizer and viscosity modifier), increasing LF and CC...journal article 2021