| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for coating especially the surface of a concrete board enabling followability to craze, without causing coating film defects such as bulging and with good finishing appearance. SOLUTION: This coating method comprises a step (1) of coating on a concrete face a water-penetration inhibitor (A) containing a silane compound having a hydrolyzable functional group and drying it; a step (2) of coating on the dried coating film obtained in the step (1) a solvent type epoxy-based primer (B) containing a monoepoxy compound and an epoxy resin having two or more epoxy groups in a molecule and drying and polishing it; a step (3) of coating on the polished coating film obtained in the step (2) a curable urethane-based filler (C) containing a hydroxy group-containing acrylic resin, a pigment, a resin fine particle, a polyisocyanate-based compound and a curing catalyst and drying and polishing it; and a step (4) of coating on the polished coating film obtained in the step (3) an overcoating (D) and drying it. COPYRIGHT: (C)2008,JPO&INPIT
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