| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a surface coating method for deterioration prevention of concrete which can improve workability of surface coating for repairing cracks and others and preventing deterioration in a concrete structure while maintaining deterioration prevention performance of concrete for a long time and which is excellent in barrier properties of harmful factors such as carbon dioxide, moisture and salinity so that a crack is not caused on the coated surface even if the crack occurs in concrete itself and which does not damage the beautiful surface appearance due to occurrence of a fine swelling. <P>SOLUTION: A surface coating method for deterioration prevention of concrete comprises the step of coating the surface of a concrete structure with a surface coating material which includes cement and an organic filler with a true specific gravity of 1.0 or less and which has an extension of coating film at -20°C of 0.4 mm or more and an adhesive strength at 20°C of 1 N/mm<SP POS="POST">2</SP>or more, and sticking, to the surface coating material on the surface of the concrete structure, a sheet which comprises a mesh fiber sheet with a void ratio in mesh of 50-80% and a size of opening of 2 mm or less and is coated with the surface coating material in advance. <P>COPYRIGHT: (C)2013,JPO&INPIT |
