| abstract |
The present invention provides a concrete composition that exhibits super-fast hardness, has characteristics that do not become too hard over time, is inexpensive, and is suitable as a repair material for bridge decks. A concrete composition containing cement, coarse aggregate and fine aggregate, wherein the fine aggregate is composed of an inorganic hollow balloon and a normal fine aggregate having an absolute dry specific gravity of 2.3 or more. The concrete composition. [Selection figure] None |