The main objective of this work is to understand the effect of the addition of fly ash (0, 15 and 30 wt%) in the hydration of a BACSA cement paste (water/cement=0.4) prepared with 12 wt% of anhydrite. The pastes were characterized, at different hydration ages, through laboratory X-ray powder diffraction (LXRPD) (using an internal standard) combined with the Rietveld methodology and thermal analyses. Details about the phase developments including pozzolanic reactivity will be reported and discussed.
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