| 摘要 |
<p>PURPOSE: Provided is a floor crashing sound decreasing material, which improves interior sound environment of a dweller and has excellent dynamical stability when being constructed at a thickness of 50 millimeters. And a method for constructing the floor crashing sound decreasing material is also provided, which improves the sound decreasing property of the floor crashing sound decreasing material. CONSTITUTION: The floor crashing sound decreasing material comprises: (i) 100 part by weight of at least one buffing material selected from the group consisting of waste tire pulverized materials, rubber chip, ethylene vinyl acetate chip, granular styrene foam; and (ii) 0.5-70 part by volume of load stabilizer which is selected from the group consisting of fly ash, calcium carbonate, talc, clay, silica, mica, sand, plastic pulverized materials, cement, gypsum, magnesia, magnesium sulfate and magnesium chloride and has a smaller particle size and lower elasticity than the buffing material. The method comprises steps of: (i) foaming a shock-decreasing layer on a base slab by using the floor crashing sound decreasing material; and (ii) foaming a rigid layer having a compression strength of more than 80 kilogram force per square centimeter on the shock-decreasing layer.</p> |
