Cement additive and cement composition
AssigneesTaiheiyo Cement Corporation, Dc Co., Ltd.
InventorsHiroshi Hirao, Kazuo Yamada, Kiyoshi Koibuchi, Nobukazu Nito
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Abstract
A cement additive contains industrial waste and has the effect of inhibiting formation of monosulfate in a hardened cementitious material. The cement additive contains specifically calcium carbonate, gypsum and coal ash and/or blast-furnace slag powder. This enables efficient use of industrial waste, allows inhibiting monosulfate formation in the hardened cementitious material, and allows producing a hardened cementitious material having good durability (sulfate resistance).
Claims20
A cement additive, containing industrial waste and having an effect of inhibiting monosulfate formation in a hardened cementitious material.
Dependencies are inferred from the claim text.