| abstract |
The present invention relates to a cement premix product containing a water-soluble vinyl copolymer as a powdery dispersant, and to entrain air even when a powdery antifoaming agent stored over time is blended. To provide a cement premix product capable of controlling the water content sufficiently low. A powdered defoaming agent containing a specific block copolymer, a porous silica fine powder, and an antioxidant in a predetermined ratio is used. [Selection diagram] None |