ADMIXTURE FOR CEMENT

PURPOSE:To form an admixture for cement capable of preventing lowering of fluidity and air amount of concrete with the lapse of time and having excellent freezing and melting properties by blending fine grains of a copolymer (salt) of olefin and ethylenic unsaturated dicarboxylic acid anhydride and...

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Bibliographic Details
Main Authors IIZUKA MASANORI, MIZUNUMA TATSUYA, TSUJI AKITOSHI
Format Patent
LanguageEnglish
Published 10.03.1992
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 form an admixture for cement capable of preventing lowering of fluidity and air amount of concrete with the lapse of time and having excellent freezing and melting properties by blending fine grains of a copolymer (salt) of olefin and ethylenic unsaturated dicarboxylic acid anhydride and a water reducing agent and defoaming agent for concrete as essential components. CONSTITUTION:The aimed admixture for cement obtained by blending (A) fine grains of a copolymer of 2-8C olefin and ethylenic unsaturated dicarboxylic acid anhydride or fine grains of a polyvalent metal salt thereof with (B) a water reducing agent and (C) defoaming agent for concrete as essential components. As necessary,(D) the foaming agent may be added to the above- mentioned composition. The component B is preferably usedat a wt. ratio of the component B to the component A of 1:99-99:1. The component C is mainly composed of dimethylpolysiloxane and preferably used at a wt. ratio of 0.001-5:100 based on total amount of the component A and component B.
Bibliography:Application Number: JP19900183442