| 摘要 |
The present invention relates to an environment-friendly heavy duty paint composition and a structural steel painting construction method using the same More particularly, disclosed are: the environment-friendly heavy duty paint composition uses a water-soluble epoxy resin as paint for preventing the structural steel surface of a bridge, a steel structure, a marine structure and the like from being corroded, and thereby, being environment-friendly and having excellent physical properties such as weatherproof, durability, water resistance, wet endurance, acid resistance, alkali resistance, hardness of paint, elasticity and the like, as well as having excellent repair paintability and painting workability; and the structural steel painting construction method using the same. The paint composition comprises: 5-25 parts by weight of the water-soluble epoxy resin; 1-5 parts by weight of water; 1-10 parts by weight of a diluent; 5-30 parts by weight of a water-soluble hardener; and 1-10 parts by weight of a coloring pigment. The construction method comprises: a surface treatment step for performing a surface treatment on detachment painting of the structural steel surface formed on the bridge or the structure, or contaminants such as rust, dust, oil and the like, using a surface treatment apparatus provided with a collecting apparatus; a rust resisting paint coating step for coating the surface treated structural steel surface with rust resisting paint including zinc powder, a resin, an alcohol solvent, an anti-corrosive agent and water; a heavy duty paint coating step for coating the heavy duty paint on the surface after the rust resisting paint is cured; and a surface protective agent applying step for applying a surface protective agent to protect the heavy duty paint on the upper side of the heavy duty paint. [Reference numerals] (S10) Surface treatment step; (S20) Rust resisting paint coating step; (S30,S50) Curing; (S40) Heavy duty paint coating step; (S60) Construction completion |
