방진재 적용 바닥구조의 바닥충격음 차단성능 분석

Abstract

This study aims to improve performance by changing the composition of the upper part of the slab and avoiding significant deviation from the current floor structure construction method of apartment houses. To derive the upper configuration of the slab with improved floor impact sound insulation performance, various conditions were set and tested, such as applying mortar twice and including a damping material. As a result of measuring the performance of the eight floor compositions, the lightweight impact sound insulation was improved by 25 dB to 38 dB (single number quantity) compared to that of the bare slab, and the heavyweight impact sound insulation was improved by at least 3 dB and up to 16 dB. The applied damping material was found to be effective in both lightweight and heavyweight impact sounds. The configuration of Type 8 with damping material was reduced by 38 dB to a single number quantity compared to the bare slab. In addition, attention should be paid to the installation of the side resilient material because improper installation leads to a decrease in the performance of lightweight and heavyweight impact sounds.