| abstract |
This invention provides a concrete composition having higher flowability and higher resistance to material separation that inhibits the separation of materials such as aggregates or the separation of black powders, and a concrete cured article obtained by curing the concrete composition. n The concrete composition of this invention comprises a binding material, water, fine aggregates, coarse aggregates, and a blending agent, wherein the ratio of water to the binding material is 30-70 mass%, the slump flow value is 35-80 cm, the binding material contains Portland cement in a ratio of 20 mass% or more, and the blending agent obtained by combining 3 or 4 kinds of certain ingredients is contained in a ratio of 0.05-0.5 parts by mass with respect to 100 parts by mass of the binding material. |