With the increased awareness of environmental aspects, External Thermal Insulation Composite Systems (ETICS) are gaining interest. The main purpose of adding an ETICS cladding to a wall is to improve its thermal isolation. Whilst in the higher frequency range the acoustic performance is improved due to the application of ETICS cladding, in the lower frequency range the acoustic performance usually decreases. This reduction of the acoustic performance is caused by a mass-spring-mass resonance effect of the added thermal insulation layer with plaster covering. The paper presents experimentally obtained sound reduction indices, following ISO 10140-2, for a wall with and without ETICS cladding. The paper also reports on the observation of a significant variation of the mass-spring-mass resonance frequency of the ETICS cladding across the wall surface.
Variation of the mass-spring-mass resonance frequency of etics cladding systems in practice
Piana E. A.;
2021-01-01
Abstract
With the increased awareness of environmental aspects, External Thermal Insulation Composite Systems (ETICS) are gaining interest. The main purpose of adding an ETICS cladding to a wall is to improve its thermal isolation. Whilst in the higher frequency range the acoustic performance is improved due to the application of ETICS cladding, in the lower frequency range the acoustic performance usually decreases. This reduction of the acoustic performance is caused by a mass-spring-mass resonance effect of the added thermal insulation layer with plaster covering. The paper presents experimentally obtained sound reduction indices, following ISO 10140-2, for a wall with and without ETICS cladding. The paper also reports on the observation of a significant variation of the mass-spring-mass resonance frequency of the ETICS cladding across the wall surface.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
