Development of lightweight concrete subfloor with ethylene vinyl acetate (EVA) aggregates waste to reduce impact sound in flooring system

Comfort and habitability are requirements for housing quality, affected by underfloor system. Thus, this study aims to design lightweight concrete slabs underfloor with the use of ethylene vinyl acetate (EVA) aggregates, with two grain sizes of conventional aggregates replaced with EVA. The experimental counted on four unit mixes, varying the ratio between EVA coarse and fine aggregates and natural aggregates. The underfloor plates were molded with thickness of 3, 5 and 7 centimeters, and 3cm plus 1cm of conventional coating. Slabs were submitted to specific mass and standardized impact sound pressure level tests. Results showed a correlation between specific masses and impact sound values, being that 7cm thickness slabs with smaller specific mass, with total aggregate replacement, presented noise intensity reductions of 17dB in comparison to same thickness slabs with natural sand and smaller content of EVA coarse aggregate; and a 28dB reduction in relation to the slab without underfloor.

• Autores: Pacheco, Fernanda; Krumenauer, Marcelo; Medeiros, Daniel Reis de; Nunes, Maria Fernanda; Tutikian, Bernardo Fonseca
• Tipo de recurso: Article of journal
• Fecha de publicación: 2017
• Institución: Universidad Nacional de Colombia
• Repositorio: Universidad Nacional de Colombia
• Idioma: spa
• OAI Identifier: oai:repositorio.unal.edu.co:unal/60412
• Acceso en línea: https://repositorio.unal.edu.co/handle/unal/60412; http://bdigital.unal.edu.co/58744/
• Palabra clave: 62 Ingeniería y operaciones afines / Engineering; EVA waste; reduce solid waste; acoustic performance; impact sound; flooring systems; lightweight concrete; residuo de EVA; reducir los residuos sólidos; comportamiento acústico; sonido del impacto; sistemas de pisos; hormigón ligero
• Rights: openAccess
• License: Atribución-NoComercial 4.0 Internacional