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Feng, Taotao (author), Jiang, Jinyang (author), Chu, Hongyan (author), Wang, Liguo (author)This paper reports on a study to determine the possibility of using ultra-fine fly ash (UFA) for partial or total replacement of normal fly ash (NFA) in ultra-high performance concrete (UHPC). Workability, microstructure, porosity, drying shrinkage as well as mechanical properties were comprehensively studied to investigate the influence of UFA...conference paper 2021