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Floor Impact Noise Level for Concrete Slab Integrated with Floor Finishing Layers
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 Title & Authors
Floor Impact Noise Level for Concrete Slab Integrated with Floor Finishing Layers
Mun, Dae Ho; Oh, Yang Ki; Jeong, Gab Cheol; Park, Hong Gun;
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 Abstract
Floating floor is most commonly used at apartment houses in Korea for thermal insulation and reducing impact noise. But it in proven that the floating floor is not effective for reducing the floor impact noise in low frequency range. In most cases, impact sound pressure level under 63 Hz frequency band were actually increased by the resonance of resilient material, lightweight concrete and the finishing mortar installed on it. In this paper, an integrated floor system consist of 70 mm light weight concrete and 40 mm finishing mortar successively installed on the concrete slab was suggested to avoid the resonance. Integrated floor system increases total flexural stiffness and mass per unit area. The natural frequencies of first and second vibration mode were increased and acceleration response and floor impact sound level was decreased in all measurement range.
 Keywords
Floor Impact Sound;Integrated Floor;Heavy-weight Impact Sound;Remodeling;
 Language
Korean
 Cited by
 References
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