FLOOR BED MATERIAL AND CONCRETE FLOOR STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a floor bed material and concrete floor structure excellent in floor sound insulating property. SOLUTION: In this floor bed material 1, a support body 3 provided with hollow parts 8 is protrusively provided on the lower surface of a bed part 2 formed of a hard thermoplastic foamed resin, and at least one of the side wall 6 and bottom plate 7 of the support body 3 is formed of an elastic closed cell thermoplastic foamed resin.