IMPACT SOUND REDUCING MATERIAL, STRUCTURE AND CONSTRUCTION METHOD OF FLOATING-FLOOR USING IMPACT SOUND INSULATION

摘要

PURPOSE: An impact sound reducing material, a structure and a construction method of a floating-floor structure using the reducing material are provided to exclude the noise generated between floors of an apartment house. CONSTITUTION: AN impact sound reducing material(10) comprises upper and lower foam material layers(11,13) and a middle shock-absorbing layer(12). The foam material layer is made by mixing polymeric materials, based on poly-olefin, in non-crosslink or crosslink. The middle shock-absorbing layer consists of scrap tire chips and a binder layer, and is installed between the foam material layers. In a floating-floor structure, the impact sound reducing material is installed between a concrete slab and a floor finishing material. The method to construct a floating-floor on the concrete slab comprises the steps of paving the polymeric material on the lower layer, paving the binder and scrap tire chips on the middle layer, and paving the polymeric foaming materials on the upper layer.