Laboratory evaluation of impact noise insulation of dry systems for floating floors

The evaluation of the insulation properties of dry systems for impact noise reduction is usually performed in laboratory, according to ISO 10140 standard. The use of dry systems made by panels consisting of mineralised spruce wood-wool bound with Portland cement combined with recycled rubber is a good solution for improving acoustic performance of floors. This kind of dry systems is very interesting not only from the acoustic point of view, but also for environmental sustainability. In fact both materials derive from recycled elements or from ecological and bio-compatible production cycles. The aim of this work is the evaluation of dry floating floors made of a combination of different resilient sub-layers loaded by rigid heavy panels, with a focus on the test conditions and sample setup. The configurations that were chosen of these different layers starting from feedback of dynamic stiffness, rated according to EN 29052-1 standard. The results were then compared with the estimated assessment of the acoustic performance proposed by EN 12354-2 standard.