Investigation of the effects of different types of interlayers on floor impact sound insulation in box-frame reinforced concrete structures

Yoo, Seung Yup; Jeon, Jin Yong

doi:10.1016/j.buildenv.2014.03.008

Cited by 46 publications

(16 citation statements)

References 10 publications

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“…Para melhorar o isolamento acústico do tipo de laje composto por vigota e lajota, utiliza-se o piso flutuante a fim de nivelar e regularizar o sistema (SCHIAVI, 2018). O piso flutuante é um sistema construtivo composto por um elemento rígido, como um contrapiso ou placa rígida, sobre um material resiliente também denominado "camada elástica", que o desvincula dos elementos estruturais e de vedação da edificação (CANIATO et al, 2017;HOPKINS, 2012;YOO;. Apesar de sua comprovada eficiência na redução dos sons de impacto, as análises que envolvem o sistema construtivo completo são determinantes para a escolha de soluções adequadas (NUNES; ZINI; PAGNUSSAT, 2014).…”

Section: Introductionunclassified

Desempenho acústico de laje com vigota e lajota: isolamento ao som aéreo e de impacto

Oliveira

Heissler

Lima³

et al. 2021

Ambient. constr.

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Resumo Considerando o uso expressivo no cenário nacional de lajes pré-fabricadas de concreto com elementos inertes de preenchimento do tipo cerâmico, este trabalho contém a avaliação do comportamento do sistema frente a ruídos aéreos e de impacto, em diferentes composições. Foram realizados ensaios em câmara reverberante vertical, conforme a ISO 10140-5:2010. As variações empregadas nos sistemas foram contrapiso, camada resiliente, revestimentos de laminado de madeira e porcelanato, reboco de argamassa e forro suspenso. Os resultados evidenciaram que o desempenho acústico ao som de impacto da laje pré-fabricada de concreto com lajota cerâmica é afetado pelo efeito da ressonância nas cavidades das lajotas e que a adição de contrapiso pode compensar o menor isolamento acústico em comparação à laje de concreto maciço, em razão do consequente aumento na massa do sistema. Os resultados também mostraram que, para o isolamento ao ruído aéreo, não existem diferenças significativas entre os revestimentos de porcelanato e piso laminado e que a instalação do forro compensou a reduzida perda de transmissão sonora da laje vigota/lajota em relação à laje de concreto maciço.

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Section: Introductionunclassified

Desempenho acústico de laje com vigota e lajota: isolamento ao som aéreo e de impacto

Oliveira

Heissler

Lima³

et al. 2021

Ambient. constr.

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“…High compressive strength and stiffness are the fundamental conditions for a civil structure to support high loads and avoid failure of serviceability [53,54]. On the other hand, high mechanical deformability results in a better impact on vibro-acoustic damping and sound insulation performance against impact noise [55]. In analogy with the mechanical behavior observed in ordinary PC concrete, the elastic modulus varies with the compressive strength.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Recent Advances in Geopolymer Technology. A Potential Eco-Friendly Solution in the Construction Materials Industry: A Review

2021

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In the last ten years, the Portland cement industry has received wide criticism due to its related high embodied energy and carbon dioxide footprint. Recently, numerous “clean” strategies and solutions were developed. Among these, geopolymer technology is gaining growing interest as a functional way to design more eco-friendly construction materials and for waste management issues suffered by various industries. Previous research has highlighted the attractive engineering properties of geopolymeric materials, especially in terms of mechanical properties and durability, resulting in even higher performance than ordinary concrete. This review provides a comprehensive analysis of current state-of-the-art and implementations on geopolymer concrete materials, investigating how the key process factors (such as raw materials, synthesis regime, alkali concentration, water dosage, and reinforcement fillers) affect the rheological, microstructural, durability, and mechanical properties. Finally, the paper elucidates some noteworthy aspects for future research development: innovative geopolymer-based formulations (including alkali-activated blends for additive manufacturing and thermo-acoustic insulating cellular compounds), concrete applications successfully scaled in the civil-architectural fields, and the perspective directions of geopolymer technology in terms of commercialization and large-scale diffusion.

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“…Material properties of the floor system with the proposed resilient materials [ 3 , 22 ] are tabulated in Table 11 . The natural frequency has been computed using Equation (1) and tabulated in Table 12 .…”

Section: Evaluation Of Floor Impact Noise Reductionmentioning

confidence: 99%

“…With a growing demand for improved quality of life, there have been frequent cases of civil complaints and disputes in relation to floor impact noises. To be more specific, the number of disputes filed due to floor impact noise more than doubled from 7021 cases in 2012 to 15,485 cases in 2013 [ 1 , 2 , 3 ]. In an effort to resolve this issue, the government of South Korea has revised the Criteria for the interlayer floor impact sound regulation in multi-family residential housing [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

“…You and Jeon performed both finite element simulations and field measurements in order to investigate the effects of resilient isolators and viscoelastic resilient materials on suppressing floor impact noise. Results showed that the impact vibration acceleration level and floor impact sounds at low frequencies is significantly decreased due to the installation of resilient materials, whereas the impact sound pressure levels at low frequencies were increased as a result of the use of resilient isolators [ 3 ]. Park et al [ 22 ] studied low-frequency impact sound transmission using a finite element vibration model and an experimental sound field using a rubber ball as an impact source in order to determine the influencing factors.…”

Section: Introductionmentioning

confidence: 99%

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Acoustic Performance of Resilient Materials Using Acrylic Polymer Emulsion Resin

2016

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There have been frequent cases of civil complaints and disputes in relation to floor impact noises over the years. To solve these issues, a substantial amount of sound resilient material is installed between the concrete slab and the foamed concrete during construction. A new place-type resilient material is made from cement, silica powder, sodium sulfate, expanded-polystyrene, anhydrite, fly ash, and acrylic polymer emulsion resin. Its physical characteristics such as density, compressive strength, dynamic stiffness, and remanent strain are analyzed to assess the acoustic performance of the material. The experimental results showed the density and the dynamic stiffness of the proposed resilient material is increased with proportional to the use of cement and silica powder due to the high contents of the raw materials. The remanent strain, related to the serviceability of a structure, is found to be inversely proportional to the density and strength. The amount of reduction in the heavyweight impact noise is significant in a material with high density, high strength, and low remanent strain. Finally, specimen no. R4, having the reduction level of 3 dB for impact ball and 1 dB for bang machine in the single number quantity level, respectively, is the best product to obtain overall acoustic performance.

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Investigation of the effects of different types of interlayers on floor impact sound insulation in box-frame reinforced concrete structures

Cited by 46 publications

References 10 publications

Desempenho acústico de laje com vigota e lajota: isolamento ao som aéreo e de impacto

Desempenho acústico de laje com vigota e lajota: isolamento ao som aéreo e de impacto

Recent Advances in Geopolymer Technology. A Potential Eco-Friendly Solution in the Construction Materials Industry: A Review

Acoustic Performance of Resilient Materials Using Acrylic Polymer Emulsion Resin

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