Fig. 3: Reactivity variations of materials.
From: Data-driven material screening of secondary and natural cementitious precursors
a Heat release versus Ca(OH)2 consumption for the pre-defined material types b reactivity variation in the reactivity space of 18 various material types. Colorscale with saturation of 1 as 100% and white as no frequency, and contour showing the density of frequency. Gray horizontal and vertical lines indicate the thresholds distinguishing inert from reactive materials based on heat release (120 j/g), and identifying pozzolanic or hydraulic behavior based on Ca(OH)2 consumption (50 g/100 g). c–h variations further in subtypes of materials: coal fly ashes, slags, biomass ashes, construction and demolition wastes and waste glass, other ashes, and mine tailings + refinery residue (bauxite residue). In (a), annotations of each color for material types are given in Fig. 1. In (c–g), KDE density of each subtype are plotted on the axes. MSWI, municipal solid waste incineration.
