EXPANDING MATERIAL FOR AN UNDERWATER ANTI-WASHOUT CONCRETE, ANTI-WASHOUT UNDERWATER CONCRETE COMPOSITION, AND HARDENED ARTICLE THEREOF

摘要

PROBLEM TO BE SOLVED: To provide an expanding material for an underwater anti-washout concrete, capable of obtaining good dry shrinkability and securing flowability by showing stable inflation developability; and to provide an underwater anti-washout concrete composition using the expanding material, excellent in workability, dry shrinkability, and underwater anti-washout characteristics.;SOLUTION: This invention relates to an expanding material used for an underwater anti-washout concrete, mainly comprising an expansible baked material, wherein: a content ratio of particles of 53 to 125 μm in the expansible baked material is 15% or more; a content ratio of the particles coarser than 125 μm is 10% or less; and Blaine's specific surface area of the expansible baked material is 3,500 cm²-/g or less.;SELECTED DRAWING: None;COPYRIGHT: (C)2018,JPO&INPIT