CONSTRUCTION STRUCTURE OF REPLACEMENT PIPE AND FLOOR SLAB PENETRATION PIPING MATERIAL USED FOR THE CONSTRUCTION STRUCTURE

PROBLEM TO BE SOLVED: To provide a construction structure of a replacement pipe, which reduces generation of noise, vibration and dust during construction when an existing pipe penetrating a floor slab is replaced with a new pipe, and which can easily secure fire protection in the floor slab penetrating part, and to provide a floor slab penetration piping material used for the construction structure.SOLUTION: A straight pipe part 22a, which is a part of the floor slab penetration piping material 2b and on which a fireproof thermal expansion material 3 is wound, is inserted into a through-hole H from the upper part of the through-hole H after coating the upper surface of the floor slab S with a sealing agent 5 at the position where the lower end surface of the socket 22b of the floor slab penetration piping material 2b faces, so as to surround the through-hole H, formed by pulling out the existing pipe, in the floor slab S. While receiving the socket 22a by the floor slab S with the sealing agent 5 tucked under the lower end surface of the socket 22b, the fireproof thermal expansion material 3 is sandwiched, around the entire outer periphery, between the outer peripheral surface of the straight pipe part 22a and the inner peripheral surface of the through-hole H.