Sound Insulation of Wooden Three-layered Material II. Floor-impact sound level of wooden three-layered floors

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Other Title
  • 木質３層構造材の遮音性能（第２報）　　３層床の床衝撃音レベル
  • モクシツ 3ソウ コウゾウザイ ノ シャオン セイノウ ダイ2ホウ 3ソウショウ ノ ユカショウゲキオン レベル
  • Sound Insulation of Wooden Three-layered Material II.
  • Floor-impact sound level of wooden three-layered floors
  • 3層床の床衝撃音レベル

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Description

In the present study the floor impact sound insulations of three-layered floors composed of cedar timber and plywood was measured and evaluated in accordance with JIS A 1418-1, JIS A 1418-2, and JIS A 1419-2, and compared with that of conventionally constructed floors. The results were summarized as follows : (1) The light and heavy floor impact sound insulations of the three-layered floors was better than that of conventionally constructed floor ; (2) The light floor impact sound insulation of the three-layered floors with rubber supporting the upper air layer was much better than of the others ; (3) When the joist interval is changed from 433.5 mm to 289 mm, the heavy floor impact sound insulation was improved by the increase of the stiffness ; (4) When the CFRP plate was bonded to the floor with the joist interval of 433.5 mm, the heavy floor impact sound insulation was improved. However, the CFRP plate had no effect in the case of the floor with the joist interval of 289 mm, because bonding the CFRP plate to the wooden floor was not enough to increase the stiffness.

Journal

  • Mokuzai Gakkaishi

    Mokuzai Gakkaishi 56 (2), 93-103, 2010

    The Japan Wood Research Society

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