| 摘要 |
PROBLEM TO BE SOLVED: To surely close a clearance between a corrosion protective surface of a concrete structure and a hardware installed in the corrosion protective surface.SOLUTION: A synthetic resin material in a position near a fitting part 11 of a step 1 continuing to the fitting part 11 and projecting from a corrosion protective surface 201 in a fitting state of the step 1 is threaded to provide a thread part 131. A nut 14 made of the same synthetic resin material as the corrosion protective surface and having a size and a shape capable of shielding a clearance between the corrosion protective surface 201 and the step 1 is fitted to the thread part 131. The nut 14 is brought into contact with the corrosion protective surface 201, and contact surfaces between the nut 14 and the corrosion protective surface 201 are fused to bind with each other by heat welding or ultrasonic welding and water-tightly joined to each other. |
