Abstract: A joint structure at an end of a concrete floor slab of a bridge according to an embodiment of the present invention is configured such that: a lowered step part is formed in an upper part of an expansion gap formed between ends of concrete floor slabs or an expansion gap formed between the end of the concrete floor slab and an abutment; joint layers, each made of an elastic asphalt mixture covered with a covering sheet, are formed in the lowered step part; and a paving material is placed on the joint layer to form a surface layer.

Abstract: Provided is a metal thermal spray method, which does not require a process of imparting an uneven shape to a surface of a base material in advance, A metal thermal spray method of thermally spraying a metal onto a surface (1a) of a base material (1) made of a metal, the metal having an ionization tendency larger than that of the metal of the base material (1), includes: thermally spraying the metal onto the surface (1a) of the base material (1); and impregnating a thermally sprayed film (2) formed by the thermal spraying with a coating material (5) that contains silane and polyisocyanate and has viscosity of 50 to 500 mPa·s at 25° C. and curing the coating material (5). In this manner, a pore sealing treatment in the thermally sprayed film (2) and adhesion strength of the thermally sprayed film (2) onto the surface (1a) of the base material are reinforced.