Impact sound insulation technique using corn cob particleboard

Faustino, Jorge; Pereira, Luís Torres; Soares, Salviano; Cruz, Daniel Magalhães da; Paiva, Anabela; Varum, Humberto; Ferreira, José; Pinto, José M.

doi:10.1016/j.conbuildmat.2012.07.064

Cited by 67 publications

(31 citation statements)

References 14 publications

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“…Recent research works (6,(8)(9) have concluded that the corn cob may have interesting material properties in terms of thermal and acoustic insulation behaviours. At the same time, granulate of corn cob has also been suggested as a possible organic lightweight aggregate of concrete for non-structural applications, and as an alternative solution to currently applied solutions such as expanded clay, particles of expanded polystyrene (EPS), particles of cork or other lignocelluloses wastes (10).…”

Section: Introductionmentioning

confidence: 99%

Lightweight concrete masonry units based on processed granulate of corn cob as aggregate

Faustino¹,

Silva²,

Pinto³

et al. 2015

Mater. construcc.

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A research work was performed in order to assess the potential application of processed granulate of corn cob (PCC) as an alternative lightweight aggregate for the manufacturing process of lightweight concrete masonry units (CMU). Therefore, CMU-PCC were prepared in a factory using a typical lightweight concrete mixture for non-structural purposes. Additionally, lightweight concrete masonry units based on a currently applied lightweight aggregate such as expanded clay (CMU-EC) were also manufactured. An experimental work allowed achieving a set of results that suggest that the proposed building product presents interesting material properties within the masonry wall context. Therefore, this unit is promising for both interior and exterior applications. This conclusion is even more relevant considering that corn cob is an agricultural waste product. RESUMEN: Unidades de mampostería de hormigón ligero basado en granulado procesado de la mazorca de maíz como árido.En este trabajo de investigación se evaluó la posible aplicación de granulado procesado de la mazorca de maiz como un árido ligero alternativo en el proceso de fabricación de unidades de mampostería de hormigón ligero. Con esta finalidad, se prepararon en una fábrica diversas unidades de mampostería no estructural con granulado procesado de la mazorca de maiz. Además, se fabricaran unidades de mampostería estándar de peso ligero basado en agregados de arcilla expandida. Este trabajo experimental permitió lograr un conjunto de resultados que sugieren que el producto de construcción propuesto presenta interesantes propiedades materiales en el contexto de la pared de mampostería. Por lo tanto, esta solución es prometedora tanto para aplicaciones interiores y exteriores. Esta conclusión es aún más relevante teniendo en cuenta que la mazorca de maíz es un producto de desecho agrícola.

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Section: Introductionmentioning

confidence: 99%

Lightweight concrete masonry units based on processed granulate of corn cob as aggregate

Faustino¹,

Silva²,

Pinto³

et al. 2015

Mater. construcc.

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“…From an environmental point of view, some works have developed recycled and natural materials for acoustic applications, such as corn cob particleboard, kenaf's fibres and others [14][15]. Ther-moplastic materials, such as polyurethane and polypropylene, are a possible alternative to available sound-insulating materials [16][17].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of acoustic and dynamic behaviour of ethylene vinyl acetate panels

Nadal

Alcaraz

Juliá

et al. 2019

Materialwissenschaft Werkst

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Ethylene vinyl acetate panels, with high vinyl acetate content and a closed‐cell structure, were studied through various experimental techniques as a first approach to evaluate the vibrational and acoustic behaviour of ethylene vinyl acetate panels for building applications. Test specimens, with a variety of densities and thicknesses were tested to evaluate the influence of these two parameters on acoustic impedance, sound transmission loss, dynamic stiffness and attenuation of vibrations. The results obtained shows sound transmission loss values for frequencies up to 2500 Hz with a maximum of about 63.7 dB, the dynamic stiffness results presented a wide range, with a maximum value of 350 MN/m3 and a minimum value of 23.3 MN/m3.On the other hand the lack of pore in the surface produce a high acoustic impedance. It can be concluded that ethylene vinyl acetate presents appropriate characteristics, mainly as an acoustic and vibration isolating material, for floorings and light partitions.

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“…It should be noted that more and more studies are focus on the potential of under‐utilized waste materials‐byproducts from agricultural products with the requirement of green energy conservation, such as wheat straw , rice straw , corncobs , and so on. Rice husk (RH) is one of the most common agricultural wastes in China, which has won the favor of many researchers.…”

Section: Introductionmentioning

confidence: 99%

Acoustic Characteristics Parameters of Polyurethane/Rice Husk Composites

Wang

Zhang

et al. 2018

Polymer Composites

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The interest of this article lies in the proposition of develop the relationship of the adding of Rice Husk (RH) and acoustic characteristic parameters of Polyurethane (PU) foam. In this article, different amount of RH (2%, 5%, and 8%) was employed into the formation of PU foam system. A rapid method based on professional acoustic measurement was used to determine the acoustic characteristic parameters of the PU foam and PU‐RH composites, such as porosity, flow resistance, tortuosity, and characteristic constants, and analyze the effect of RH on the acoustic characteristic parameters. The measured results indicated that the sound absorption coefficients of PU‐RH composites increased at low frequency along with a small decrease at high frequency on the addition of RH. And adding more RH will be helpful to improve the low‐frequency sound absorption performance of PU foam without increasing the thickness. With the increase of RH additive amount, the flow resistance decreased first and then increased, while the porosity declined slowly generally. Overall, the PU‐RH composite containing 5% RH showed the most satisfactory absorption performance. POLYM. COMPOS., 40:2653–2661, 2019. © 2018 Society of Plastics Engineers

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Impact sound insulation technique using corn cob particleboard

Cited by 67 publications

References 14 publications

Lightweight concrete masonry units based on processed granulate of corn cob as aggregate

Lightweight concrete masonry units based on processed granulate of corn cob as aggregate

Evaluation of acoustic and dynamic behaviour of ethylene vinyl acetate panels

Acoustic Characteristics Parameters of Polyurethane/Rice Husk Composites

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