SELF-FILLING CEMENT ADMIXTURE

PURPOSE:To improve the consistency, fluidity and segregation resistance of a cement composition by incorporating a specified copolycondensation product of aminobenzenesulfonic acid, phenol and formaldehyde and a nonionic water-soluble cellulose ether into the admixture. CONSTITUTION:From 0.8 to 1.2m...

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Bibliographic Details
Main Authors TAMAOKI RYOICHI, IIZUKA MASANORI, YAMATO FUJIO
Format Patent
LanguageEnglish
Published 22.05.1992
Subjects
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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Summary:PURPOSE:To improve the consistency, fluidity and segregation resistance of a cement composition by incorporating a specified copolycondensation product of aminobenzenesulfonic acid, phenol and formaldehyde and a nonionic water-soluble cellulose ether into the admixture. CONSTITUTION:From 0.8 to 1.2mols of a compd. shown by formula I (X is H or alkali metals), 0.8-2.0mols of a compd. shown by formula II and 1-3mols of formaldehyde are polymerized in the presence of an alkali catalyst to obtain the copolycondensation product (A) of aminobenzenesulfonic acid, phenol and formaldehyde. Subsequently, 100 pts.wt. of the component A and 5-50 pts.wt. of (B) a nonionic water-soluble cellulose ether (e.g. methylcellulose) are mixed to obtain a self-filling cement admixture. The admixture contg. 0.1-5 pts.wt. of the component A and 0.01-3 pts.wt. of the component B is added to 100 pts.wt. of cement.
Bibliography:Application Number: JP19900272982