ANÁLISE DE MATERIAIS PARA DESEMPENHO ACÚSTICO EM SISTEMAS DE PISOS QUANTO AO ISOLAMENTO DE RUÍDO DE IMPACTO
DOI:
https://doi.org/10.46421/entac.v17i1.1445Palavras-chave:
Acoustic Insulation, Mechanical properties, CostResumo
The challenge of the acoustical comfort of the buildings for the designers is to implement a solution in which the materials used in the floor system can simultaneously reduce the sound and be economically viable, according to the minimum, intermediate or higher level as stated in NBR 15575-3: 2013. This work aimed to analyse the mechanical properties of different materials, their weighted standardized impact sound pressure level (L'nt, w) as well as their financial cost for the implantation of a floor system that absorbs the sound. Therefore, the impact noise test was performed in loco according to ISO 16383-2: 2015 and ISO 717-2: 2013.The tested floor systems consist of the following acoustic insulation materials: acoustic insulation adhered to slabs without subfloor, acoustic blanket under the self-levelling mortar, self-levelling mortar for subfloor, and corrugated blanket with subfloor formed by cement, sand and water. It was verified that the system composed of acoustic insulation for underlayment with self-levelling mortar presented worse performance and lower cost, while the floor system formed by slab with 5cm underlayment and 8 / 4mm mantle presented better performance, but higher cost.
Referências
ABNT ASSOCIAÇÃO BRASILEIRA DE NORMAS TÉCNICAS. NBR 15575-3: Edificaçõeshabitacionais Desempenho parte 3: Requisitos para os sistemas de pisos. Rio deJaneiro, 2013.
_______. NBR 16313: Acústica Terminologia. Rio de Janeiro, 2014.
BISTAFA, S. R. Acústica aplicada ao controle de ruído. 2. ed. São Paulo: Blucher, 2011.
BOUFLEUR, V. Desempenho acústico de edificações habitacionais: Desafios para aimplementação da norma de desempenho. Trabalho de conclusão de curso.
(Curso de Engenharia Civil) - Universidade Federal do Rio Grande do Sul, PortoAlegre, 2013.
COSTA, Ennio Cruz da. Acústica Técnica. São Paulo: Blucher, 2003.
ISO INTERNATIONAL ORGANIZATION FOR STANDARDIZATION. ISO 16283-2 Acoustics --Field measurement of sound insulation in buildings and of building elements -- Part 2:Impact sound insulation. Geneva, 2015.
_______. ISO 717-2 Acoustics -- Rating of sound insulation in building and of buildingelements -- Part 2: Impact sound insulation. Geneva, 2013.
REZENDE J. B.; RODRIGUES, F. C.; VECCI, M. A. M. Uma análise de critérios dedesempenho acústico para sistemas de piso em edificações. In:SIMMEC/EMMCOMP2014. XI Simpósio de Mecânica Computacional; II EncontroMineiro de Modelagem Computacional, 2014, Juiz de Fora. Juiz de Fora: ABMEC,2014. p. 1-14.
