ADJUVANT FOR INCREASING THE SHORT-TERM MECHANICAL STRENGTH OF A HYDRAULIC COMPOSITION WITH A REDUCED CLINKER CONTENT

The present invention relates to the use, for improving the mechanical strength of a hydraulic composition based on a cement composition comprising: - from 20 to 64% by weight of clinker, - from 5 to 60% by weight of activated clay, - from 0 to 35% by weight of limestone, - from 0 to 10% by weight o...

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Bibliographic Details
Main Authors AUTIER, CAROLINE, KOCABA, VANESSA
Format Patent
LanguageEnglish
French
Published 15.12.2022
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Summary:The present invention relates to the use, for improving the mechanical strength of a hydraulic composition based on a cement composition comprising: - from 20 to 64% by weight of clinker, - from 5 to 60% by weight of activated clay, - from 0 to 35% by weight of limestone, - from 0 to 10% by weight of calcium sulfate, the proportions being relative to the dry weight of the cement composition, of from 0.2 to 5.0% by weight, relative to the dry weight of cement composition, preferably from 0.2 to 1.0% by weight, relative to the dry weight of cement composition, of at least one adjuvant comprising at least one alkali metal salt chosen from alkali metal formate, carbonate, chloride, hydroxide, oxalate, thiocyanate, silicate, sulfate or nitrate salts or a mixture thereof. La présente invention concerne l'utilisation, pour améliorer les résistances mécaniques d'une composition hydraulique à base d'une composition cimentaire comprenant : - de 20 à 64 % en poids de clinker, - de 5 à 60 % en poids d'argile activée, - de 0 à 35 % en poids de calcaire, - de 0 à 10 % en poids de sulfate de calcium, les proportions étant par rapport au poids sec de la composition cimentaire, de 0,2 à 5,0 % en poids, par rapport au poids sec de composition cimentaire, de préférence de 0,2 à 1,0 % en poids, par rapport au poids sec de composition cimentaire, d'au moins un adjuvant comprenant au moins un sel alcalin choisi parmi les sels alcalins de formiate, carbonate, chlorure, hydroxyde, oxalate, thiocyanate, silicate, sulfate ou nitrate ou leur mélange.
Bibliography:Application Number: CA20223221121