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US 2019/0375683 A1Published application
Concrete composition and method for preparing the same
AssigneeShin-Etsu Chemical Co., Ltd.
InventorsTsutomu YAMAKAWA, Shinji TAMAKI, Kazuhisa OKADA, Miki YAMAZAKI
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Abstract
A concrete composition made up of a binder, water, a fine aggregate, a coarse aggregate, and a one-component, in which a water/binder ratio is 30 to 70% by mass, a slump flow value is 35 to 75 cm, and a one-component admixture using four specific components and water is contained in a proportion of 0.5 to 3.0 parts by mass relative to 100 parts by mass of the binder.
Claims6
A concrete composition comprising:
- a binder;
- water;
- fine aggregate;
- coarse aggregate;
- and
- a one-component admixture,
- wherein a water/binder ratio is 30 to 70% by mass, a slump flow value is 35 to 75 cm, and a one-component admixture is contained in a proportion of 0.5 to 3.0 parts by mass relative to 100 parts by mass of a binder,
- wherein the one-component admixture being a one-component admixture that contains a component A, a component B, a component C, and a component D and has an ionic strength, derived from the component A, of 0.02 to 0.8, and
- wherein the component A being a polycarboxylic acid-based water reducing agent made up of a copolymer of an unsaturated monocarboxylic acid monomer and/or an unsaturated dicarboxylic acid monomer and/or salts of these monomers and an unsaturated monomer that is copolymerizable with these monomers and salts and has a polyoxyalkylene group composed of 1 to 300 oxyalkylene units having 2 to 4 carbon atoms in a molecule and/or a salt of the copolymer, the component B being water-soluble cellulose ether, the component C being gums, and the component D being a defoamer.
6 more elements
Dependencies are inferred from the claim text.