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Three blended cements prepared by intergrinding 6–35% slag with clinker and gypsum, and a control portland cement, were sieved to yield 0–10 μm, 10–30 μm, 30–50 μm, and >50 μm subgroups. Clinker/slag/gypsum contents, and oxide compositions of the subgroups differed significantly from the unsieved cements. Fine subgroups always contained more gypsum and had lower slag-to-clinker ratios than coarse...
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