EFFECT OF THERMAL INSULATION SYSTEMS ON ACOUSTIC PERFORMANCES OF ANCIENT BUILDING CONSTRUCTION ELEMENTS

摘要

In this paper, the effect of current thermal insulation systems on acoustic performances of ancient building systems (between 50's and 70's) is investigated. Indeed, the thermal renovation of existent buildings will be essential in the next few years for energy savings considerations. However, the impact of thermal insulation composites on former and complex buildings systems (instead of traditional concrete walls) is different and not known. In a first step, the acoustic performances of different ancient building systems are predicted with CASC software (using a Transfer Matrix Method) and compared with laboratory measurements. In a second step, the effect of different thermal insulations - placed on the exterior (external thermal insulation composite system ETICS, added cladding, insulating wall panel) or in the interior (wall lining,...) on acoustic performances of ancient type walls is predicted and compared with the effect on a concrete wall (as current laboratory measurements, carried out according to ISO 140-16). In a last step, these data are used to study the effect of a thermal retrofit on acoustic performances of a 60's building. The acoustic performances of the building before and after thermal retrofit are predicted with the ACOUBAT software.