COMPARATIVE ANALYSIS OF MATS' PERFORMANCE IN IMPACT NOISE BETWEEN FLOORS

This study evaluates the effectiveness of PET wool and recycled tire rubber mats 
in reducing impact noise between floors, according to ABNT NBR 15575 (2021). Three 
reduced-scale prototypes, with and without mats, were built and tested in laboratory following 
ISO 10140-3 (2021). The rubber mat showed better performance, reaching the intermediate 
level of the standard and approaching the superior level. Results indicate that recycled 
materials are a sustainable and efficient alternative for acoustic comfort in residential 
buildings.