Acoustic behaviour of CLT slabs

Among the different types of wooden slabs, the CLT one is a solution increasingly used worldwide for both new buildings and restoration, mainly due to its structural, thermal and seismic resistance, and also for its low energy and environmental impact. In this paper the results of the laboratory acoustic characterization of CLT slabs are presented with the application of different possible performance enhancement techniques, according to the ISO 10140 series standards.This specific type of construction element has thicknesses comparable to solid concrete slabs, but it is characterized by modest acoustic performance, mainly due to the low structural mass that distinguishes it. However, significant increases in performance can be achieved both for level of impact and airborne sound insulation with adequate intervention techniques. In this paper the results of the acoustic characterization in laboratory of CLT slabs are presented with the application of different possible techniques of performance increase, according to the standards of the ISO 10140 series.