Acoustic and environmental properties

The acoustic properties of wooden-beam and concrete ceilings differ systematically. More specifically, the sound reduction factor of a (cementitious) floating screed on a wooden ceiling is significantly lower than on a concrete ceiling owing to the higher resonance frequency of the system comprising the raw ceiling, impact sound insulation and screed layer. This higher resonance frequency results from the usually lower mass of the wooden ceiling’s top layer [1]. In contrast, the acoustic properties of the innovative  concrete-wood composite ceiling are similar to those of a reinforced-concrete...