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EARLY HYDRATION BEHAVIOUR OF PORTLAND CEMENT CONTAINING CHEMICAL BY-PRODUCT GYPSUM

John Bensted

Open publisher page 13 citations

Abstract

Different types of chemical by-product gypsum are described and their influence upon the early hydration behaviour of portland cement is discussed. When the portland cement contained by-product gypsum, more ettringite was formed than when natural gypsum was present. No correlation was found between ettringite and setting behaviour. Compressivestrength development was not adversely affected by the presence in portland cement of any of the by-product gypsumsexamined here. (Author/TRRL)

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What this paper is about

Different types of chemical by-product gypsum are described and their influence upon the early hydration behaviour of portland cement is discussed. When the portland cement contained by-product gypsum, more ettringite was formed than when natural gypsum was present. No correlation was found between ettringite and setting behaviour. Compressivestrength development was not adversely affected by the presence in portland cement of any of the by-product gypsumsexamined here. (Author/TRRL)

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Available abstract

Different types of chemical by-product gypsum are described and their influence upon the early hydration behaviour of portland cement is discussed. When the portland cement contained by-product gypsum, more ettringite was formed than when natural gypsum was present. No correlation was found between ettringite and setting behaviour. Compressivestrength development was not adversely affected by the presence in portland cement of any of the by-product gypsumsexamined here. (Author/TRRL)

Key concepts: Portland cement, Gypsum, Ettringite, Cement, By-product, Materials science, Metallurgy, Chemistry

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