コンクリート用マスキング剤および壁面補修方法

摘要

PROBLEM TO BE SOLVED: To provide a masking agent for concrete, capable of effectively preventing a stain caused by a liquid component of a repair material from appearing on a concrete face, even if the repair material sticks to the concrete face.;SOLUTION: The masking agent for concrete to be coated on a wall face 11 of a concrete wall 10, containing an acid forming a modified layer 13 upon being coated on and penetrating into a surface layer part 12 of the wall face 11, prevents a wet color stain from appearing on a concrete face by preventing the penetration of a repair material 15 into the modified layer 13 if the repair material 15 for repairing the wall face 11 sticks thereto.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2019,JPO&INPIT