Waterproofing method of outer wall of building to prevent cracking of building exterior wall and corrosion of steel structure

摘要

The present invention relates to a structure capable of preventing the corrosion of the steel structure caused by leakage of water from the outer wall of an obsolete building and the prevention of cracking of the outer wall of the building and corrosion of the steel structure to prevent the detachment of concrete around the steel structure The present invention relates to an outer wall waterproofing construction method, Forming an upper buried groove (S100) for forming an upper buried groove (20) by cutting the entire outer wall to a depth of 1 to 3 cm in the lateral direction of the surface of the building outer wall (10) (S200) of forming a lower buried groove (30) by cutting the entire outer wall to a depth of 1 to 3 cm in a lateral direction at a lower end of 5 to 10 cm; A taping step (S300) for attaching the tape (40) in order to prevent the resin applied to the surface of the outer wall from spreading; and a step of applying a resin to the lower end line of the lower embedding groove (30) (S400) of attaching the forming sheet (60) having adhesiveness so that the rainwater guiding protrusions (50) are formed while preventing the rainwater guiding protrusions (50) The upper and lower buried grooves 20, (S500) for performing undercoating using an elastic coat between the buried grooves (20, 30), a primary drying step (S600) for naturally drying for 2 to 3 hours after the undercoating, (S700) in which the rainwater inducing protrusions (50) are formed by applying an intermediate coat of an elastic coat diluted with a base and a hardener on the surface of the undercoat layer, followed by natural drying for 40 to 60 hours (S900) for applying a topcoat on the surface of the intermediate coating with an elastic coat diluted with a base and a hardener, and a step of performing natural drying for 1 to 2 hours after the topping process And a finishing treatment step (S1100) for removing the tape (40) and the molding sheet (60) after the third natural drying step (S1100) Which is waterproof in the lateral direction on the outer wall of Is a construction such that a shape of the 100 form.