Acoustic Performance Assessment of Residential Building Floor Systems in Molded Concrete Wall in Loco

Abstract

In Brazil and in many countries, the modernization of civil construction is a requirement of society, motivating the search for technological innovations in construction processes. However, not all of them meet the minimum desirable requirements for affordable, quality housing. The annoyance caused by sounds and noise in floor systems between autonomous units of housing buildings makes acoustic performance one of the most relevant items of NBR 15575 (ABNT, 2021). Eight (8) tests were carried out in accordance with the NBR ISO 16283-1 (ABNT, 2018) and ISO 16283-2 (ISO, 2020) standards. The tests were carried out in 1 (one) reference floor system, consisting of a solid concrete slab, and 3 (three) different treatment configurations using materials with acoustic properties. The comparison of the results obtained considers the interference of each material and executive process adopted. At the end of the study, it was found that materials with a high potential for improving the overall acoustic performance of the floor, however, if subjected to executive interference and adhesion failures between different materials, affect compliance with the level of acoustic performance required by NBR 15575 (ABNT, 2021).