Sound reduction in samples of environmentally friendly building materials and their compositions

Januševičius, Tomas; Mažuolis, Jurgis; Butkus, Donatas

doi:10.1016/j.apacoust.2016.06.014

Cited by 14 publications

(7 citation statements)

References 14 publications

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“…Several studies have investigated materials made of biomass fibers [10,11,17,18]. Three variables: thickness, fiber size, and polymeric content as binder, were observed by Othmani et al based on sugarcane waste material and its resistivity and sound absorption performance [10].…”

Section: The Hemp Kenaf Coco-husk and Others As Biomass Fibers In Amentioning

confidence: 99%

“…Like Othmani's study, research by Ismail et al also examined waste materials of coir and shredded paper from offices by investigating four samples in a reverberation chamber (refer to the ISO 354-1985 standards) [11]. Janusevicius et al [17] further discussed waste materials and studied three kinds of wall, i.e., adobe, pressed straws, and reed, on sound reduction indexes by measuring them in an anechoic chamber with simulation methods. The results showed that the adobe with 20 mm thickness, a sound reduction index of 43 dB could be achieved [17].…”

Section: The Hemp Kenaf Coco-husk and Others As Biomass Fibers In Amentioning

confidence: 99%

“…Janusevicius et al [17] further discussed waste materials and studied three kinds of wall, i.e., adobe, pressed straws, and reed, on sound reduction indexes by measuring them in an anechoic chamber with simulation methods. The results showed that the adobe with 20 mm thickness, a sound reduction index of 43 dB could be achieved [17]. Subsequently, two biomass fibers, i.e., date palm (DPF) and coconut coir (CCF), were compared in terms of their Acoustic Absorption Coefficient (AAC) by Al Rahman et al [18].…”

Section: The Hemp Kenaf Coco-husk and Others As Biomass Fibers In Amentioning

confidence: 99%

See 2 more Smart Citations

Tailoring Acoustic Performances of Resin Reinforced Biomass Fiber-Based Panel with Single and Multiple Tailed Cavity Inclusions for Interior Work

Setyowati

Hardiman

Purwanto

2019

Fibers

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The aim of this research is to observe the acoustic performance of absorber-based biomass fiber-reinforced polyester resins that were experimentally associated with the design of tailed cavity resonator inclusion, i.e., the cavities are partly in the form of a narrow slit. The model of electro-acoustic resonators and several treatments were developed and became the bases for understanding the changes of acoustic reactance in the new structure. Variations in the inclusion cavity and the addition of a narrow slit were tested experimentally using an impedance tube technique based on ASTM E1050-98 and ASTM E2611-09. The improvements of acoustic performance were conducted by single and multiple cavity tailed inclusions with the addition of a Dacron fibrous layer and back cavity. The experimental results showed that a sample of 15 mm single tailed cavity kenaf fiber had higher sound absorption and wider broadband frequencies than did the hemp fiber, with a peak on 0.31–0.32 between 1.00–2.00 kHz. Meanwhile on multiple tailed cavities, the 30 mm hemp fiber had higher and wider broadband frequencies than did the kenaf, with peaks on 0.45–0.63 at frequencies between 1.75–2.10 kHz. It can be concluded that the tailed cavity inclusions could improve performance. Compared to the coco-husk with resonators in previous studies, the tailed cavity was a little bit lower, but the tailed cavities hemps and kenafs samples showed good sound absorption performance with lower band frequencies capabilities.

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Section: The Hemp Kenaf Coco-husk and Others As Biomass Fibers In Amentioning

confidence: 99%

Section: The Hemp Kenaf Coco-husk and Others As Biomass Fibers In Amentioning

confidence: 99%

Section: The Hemp Kenaf Coco-husk and Others As Biomass Fibers In Amentioning

confidence: 99%

See 1 more Smart Citation

Tailoring Acoustic Performances of Resin Reinforced Biomass Fiber-Based Panel with Single and Multiple Tailed Cavity Inclusions for Interior Work

Setyowati

Hardiman

Purwanto

2019

Fibers

View full text Add to dashboard Cite

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“…Conducted in previous research (Mahn, Pearse 2012;Janusevicius et al 2016;Yu et al 2017), the noise control is calculated through analysis of Area of the aperture from Sound Reduction Index (SRI) of building material and opened aperture (developed from De Salis et al (2002), see Equation (4)). The setting for WWR analysis considers distance important factor on noise propagation, different distance source to receiver effects on the maximum of WWR.…”

Section: Recommendation For Thermoacoustic Improvementmentioning

confidence: 99%

Analysis of Resilient Design by Thermoacoustic Adaptation of Tropical Urban Model

Samodra

2017

Journal of Architecture and Urbanism

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Abstract. Climate and urban environment changes lead to tropical building adaptation and resilient strategy. They focus especially on thermal comfort and noise propagation variation as the result of global warming and urban growth. This study analyzes a conceptual design of tropical urban model on integrated design of thermal and acoustic (thermoacoustic) issues. By experimental measurement and simulation method using Computational Fluid Dynamics, the findings are directed to meet the standards and to recommend the new guidelines for sustainable urban building. The research location is in Surabaya as the urban tropical lowland area and EcoHouse of ITS, a tropical building model in an urban environment, was built as experiment model. The results highlighted that the noise barrier should consider 5.24% of the maximum window to wall ratio (WWR) in tree dimensionally analysis, horizontally and vertically. Providing vertical ventilation is the best solution for urban density, but the orientation and its flanking noise affect the passive cooling. In general, there are some factors having a high contribution in addition to WWR, such as wind acceleration, the distance, and building material.

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“…Wood and wood sawdust can be used on walls and as a ller for building materials, respectively. Another wellknown conventional method is to use reed bundles as roo ng and straw in combination with clay for wall lling and reinforcement [13]. Randazzo et al [14] have tested some commercially available clay plasters typically used in Europe for exploring the manner in which mineralogical and textural properties can a ect their physical parameters; that is moisture absorption, thermal conductivity, and noise attenuation.…”

Section: Introductionmentioning

confidence: 99%

Improvement of the Acoustic Attenuation of Plaster Composites by the Addition of Short‐Fibre Reinforcement

Kulhavý

Samkova

Petrů

et al. 2018

Advances in Materials Science and Engineering

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Noise attenuation is a key contemporary issue associated with the protection of human health. In this study, the possibilities of affecting acoustic properties of plaster composites by the addition of short-fibre reinforcement are described. e improvement of attenuation abilities was first verified using a simple numerical model with a pure plaster followed by using a reinforced plaster.e model results revealed a mutual correlation between the fibre ratio and dissipated acoustic energy. Hence, typical plasters used in the building industry (e.g., plaster, lime cement, and cement) are used as the base materials of the tested composites. e reinforcing dispersion in the form of short fibres (basalt and glass) with a defined length was selected after evidence from previously reported studies and after the comparison of some other fibres with respect to the trade-off between the rendered mechanical properties and cost. Transfer functions of the tested samples were measured using an impedance tube with two microphones, followed by the calculation of the total acoustic absorption. On the other hand, cement and plaster materials exhibited a low damping ability, and the absorption could be considerably increased by the addition of fibres, especially in the area around 1 kHz. In contrast, the UM plaster exhibited good damping properties even without the dispersion, and the addition of improper fibres such as glass ones possibly worsened the properties. e acoustic attenuation of the plaster composites can be improved by the appropriate combination of the base material and fibre dispersion. However, it is not possible to generalise this improvement for all possible combinations.

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Sound reduction in samples of environmentally friendly building materials and their compositions

Cited by 14 publications

References 14 publications

Tailoring Acoustic Performances of Resin Reinforced Biomass Fiber-Based Panel with Single and Multiple Tailed Cavity Inclusions for Interior Work

Tailoring Acoustic Performances of Resin Reinforced Biomass Fiber-Based Panel with Single and Multiple Tailed Cavity Inclusions for Interior Work

Analysis of Resilient Design by Thermoacoustic Adaptation of Tropical Urban Model

Improvement of the Acoustic Attenuation of Plaster Composites by the Addition of Short‐Fibre Reinforcement

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