| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a concrete composite material for repairing a steel floor slab which has a so-called crack self-repairing function, which disperses concrete cracks in steel floor slab pavement, which can effectively fill a hydraulic hydrate in the cracks by a latent hydraulic property included in concrete and which can prevent the infiltration of a liquid such as water and the like and a gas such as oxygen, carbon dioxide and the like causing corrosion to the steel floor slab. <P>SOLUTION: A mortar composite material for repairing the steel floor slab comprises a fiber reinforced high-toughness cement composite material whose essential components are cement, a fine aggregate and a reinforcing fiber and which includes cement coarse powders having a Blaine specific surface area of 500-2,000 cm<SP>2</SP>/g and/or blast furnace slag coarse powders having a Blaine specific surface area of 500-3,000 cm<SP>2</SP>/g and/or a blast furnace slag fine aggregate specified in JIS A 5011 and controlled to have a particle size of passing a 0.6 mm sieve in JIS. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
