Light–weight Impact Sound Evaluation of CLT Wooden Building Floors

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  • KANG Chun–Won
    Department of Housing Environmental Design, College of Human Ecology, Jeonbuk National University Research Institute of Human Ecology, College of Human Ecology, Jeonbuk National University
  • JANG Sang–Sik
    Department of Bio–based Materials, Chungnam National University
  • HASHITSUME Kazuharu
    Graduate Schools of Education, Shimane University
  • JANG Eun–Suk
    Research Institute of Human Ecology, College of Human Ecology, Jeonbuk National University Sambo Scientific Co. Ltd,
  • MATSUMURA Junji
    Laboratory of Wood Science, Division of Sustainable Bioresources Science, Department of Agro–envioronmental Sciences, Faculty of Agriculture, Kyushu University

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Description

This study evaluated the lightweight impact sound of CLT (Cross Laminated Timber) made of plywood and square timber produced from domestic small–diameter larch wood. According to KS F 2810–1, the light–weight impact sound blocking performance of the CLT was evaluated by excitation with a tapping machine on the second floor and sound collection with a microphone from the lower floor. As a result, the light impact sound was 85 dB. The light impact sound blocking performance was poor, and additional studies are needed to improve the lightweight impact sound of CLT.

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