ABSTRACT: The present research aims at evaluating the physical. chemical and synergistic effects of substitution 25% cement in mass by limestone filler (LF). fly ash (FA) and rice husk ash (RHA). in similarity of physical condition (near grain size curves). https://www.bekindtopets.com/deal-alert-NHL-Winnipeg-Jets-Distressed-iPhone-13-Pro-Max-MagSafe-Case-p96268-great-save/