Floor impact sound insulation performance of CLT floor slab and reduction effect by floor coverings

Abstract

The purpose of this study is to estimate the floor impact sound insulation performance of floor slabs with cross laminated timber panels (=CLT panels) and to grasp the reduction effect by floor coverings. Results of experiments in the laboratory show that the performance of CLT floor slabs is lower than that of a RC slab and a wood-frame panel construction floor slab concerning the light floor impact. Carpets and sound insulation floorings are found to be effective to light floor impact sound insulation. Resiliently-supported double floors seem effective to both light and heavy floor impact sound insulation.