Improvement of floor impact sound on modular housing for sustainable building

摘要

The conjecture of "sustainable development" in construction is to prepare for good environmental conditions for the future generation. To do this, the reduction of wastes from construction and demolition processes is important to reduce environmental load in the area of construction. The aim of this study is to approach methods to reduce construction wastes for development in a regulation perspective, and the suggested regulation for this is prefabricated construction regulation to reduce construction wastes from sites. The majority of Koreans live in multi-unit dwellings, so in order to introduce modular regulation, the National Housing Act of Korea must be met. Therefore this study suggests a floor structure that is able to be applied to the modular construction method, as well as to satisfy the performance criteria of Housing Act (lightweight impact sound: 58 dB or less, heavyweight impact sound: 50 dB or less) in Korea. Experiments using a mock-up in addition to a simulation were performed to find structural vibration and sound pressure levels, followed by floor impact sources of the proposed floor structure. As a result, floor impact sound was reduced on the floor structures of the same thickness comprised of different component materials, including a slab. Also, It was found that the amplification phenomenon of impact sound level by a bang machine was lower in the dry method compared to the wet method.