Sound insulation of gypsum block partitions: An analysis of single and double walls

Júnior, Otávio J.S.; Pinheiro, Marco Antonio Silva; Silva, J.J. Rêgo; Pires, Tiago Ancelmo; Alencar, Cleandro O.S.

doi:10.1016/j.jobe.2021.102253

Cited by 8 publications

(5 citation statements)

References 19 publications

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“…The STC calculation from STL values is done according to ASTM standard 33 and found to be 40 dB and 21 dB for straw-gypsum hollow block wall and packing board respectively. A similar study on sound reduction index of gypsum hollow panels of 76 mm thickness is done by Junior et al and have found the sound reduction index value of 32–34 dB which is lower than the two-core hollow straw-gypsum blocks of 200 mm thickness with 70 mm core diameter investigated in the present study 24 .…”

Section: Resultssupporting

confidence: 81%

“…In a study by Junior et al reported the acoustic properties of hollow gypsum panels as wall partitions. But they have not reported studies regarding compressive strength, fire resistance, water absorption, and thermal conductivity of hollow gypsum panels 24 . A similar kind of study on sound transmission loss on clay hollow brick wall has been done by Granzotto and co-workers 25 .…”

Section: Introductionmentioning

confidence: 99%

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Performance behaviour of agro-waste based gypsum hollow blocks for partition walls

Singh

Maiti

Bisht

et al. 2022

Sci Rep

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Crop residue management is a massive problem in the agriculture sector. Agricultural waste in the form of stubble which is usually burnt in the farm fields, causes severe air pollution and poses a threat to the environment. The present study investigates the addition of agro-waste (rice straw) in gypsum hollow-core blocks for partition walls. Various compositions of agro-waste-based gypsum samples have been studied for compressive strength, thermal, sound absorption, sound transmission loss, and fire-resistant properties. The addition of rice straw in gypsum reduces the density and compressive strength of the test sample, thus making it lightweight for non-load bearing wall application. The thermal conductivity of the rice straw added gypsum samples show a decrease in thermal conductivity from 0.2 to 0.11 W/m K. Acoustic properties viz., noise reduction coefficient (NRC) increases from 25 to 45% with increase in rice straw addition and a decreasing trend in sound transmission class (STC) from 37 to 28 dB. The fire-resistant properties viz., surface spread of flame, and fire propagation index test have shown good fire-resistant properties. The agro-waste-based hollow gypsum blocks may be used as a promising material for drywall partitions owing to its thermal insulation, low density, good acoustic and fire-resistant properties.

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Section: Resultssupporting

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Performance behaviour of agro-waste based gypsum hollow blocks for partition walls

Singh

Maiti

Bisht

et al. 2022

Sci Rep

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“…Depending on the speed of calcination, gypsum decomposition can result in gypsum with large, regular crystals, or gypsum with small, irregular crystals. When technically well built, gypsum block masonry has advantages such as good mechanical strength [27], greater thermal insulation [28,29] and acoustic insulation [30], because of its low density, it imposes less effort on structural elements [27] and greater productivity and lower total cost for sealing. In addition, gypsum is produced with low energy consumption and is therefore ecologically correct.…”

Section: Introductionmentioning

confidence: 99%

Determination of dielectric properties of plaster blocks for sealing masonry using non-destructive frequency scanning methods

Teixeira Santana Praxedes,

Duarte Júnior,

de Medeiros Gurgel Pinto

et al. 2023

PLoS ONE

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With the increasing use of traditional and new models of wireless communication systems, the study and determination of the electrical characteristics of materials used in civil construction is an important topic to establish an understanding of how the radio frequency signal behaves inside built environments. This study presents an extensive process of characterization of electrical parameters of plaster blocks used in the construction of walls. Different from the literature where a prior estimation of the data occurs to enable sampling parameters to be obtained, this work proposes an innovative way of obtaining them entirely based on the analysis of the material through frequency measurements, which results in a greater level of precision of the data results. Analyses are made in the frequency range from 0.7 to 5.2 GHz, which has been used for several wireless communication standards. To carry out the electrical characterization of dielectric materials, a non-invasive methodology is proposed based on an innovative combination of the Nicolson–Ross–Weir Method (NRW) and the Ray Tracing Method. Through the proposed methodology and an extensive campaign of measurements using frequency scanning equipment, calculated and experimental data of Shielding Effectiveness (SE), complex relative electrical permittivity, loss tangent, attenuation coefficient and conductivity were obtained for a wide range of frequency, considering different samples of plaster blocks. The obtained results are compared to those available in the related literature, confirming the accuracy of the proposed analysis.

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“…Improving sound insulation is an important consideration for the development of sustainable buildings and other products [1][2][3][4][5]. Generally, high mass building walls are often recommended for noisy areas to achieve enhanced sound insulation [6,7]. However, lightweight steel stud walls can often offer equal or better performance if sound insulation performance is considered as a criterion at their design stage [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Perforated Steel Stud to Improve the Acoustic Insulation of Drywall Partitions

2021

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Steel studs are an inevitable part of drywall construction as they are lightweight and offer the required structural stability. However, the studs act as sound bridges between the plasterboards, reducing the overall sound insulation of the wall. Overcoming this often calls for wider cavity walls and complex stud decoupling fixtures that increase the installation cost while reducing the floor area. As an alternative approach, this research reveals the potential of perforated studs to improve the acoustic insulation of drywall partitions. The acoustic and structural performance is characterized using a validated finite element model that acted as a prediction tool in reducing the number of physical tests required. The results established that an acoustic numerical model featuring fluid-structure-interaction can predict the weighted sound reduction index of a stud wall assembly at an accuracy of ±1 dB. The model was used to analyze six perforated stud designs and found them to outperform the sound insulation of non-perforated drywall partitions by reducing the sound bridging. Overall, the best performing perforated stud design was found to offer improvements in acoustic insulation of up to 4 dB, while being structurally compliant.

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Sound insulation of gypsum block partitions: An analysis of single and double walls

Cited by 8 publications

References 19 publications

Performance behaviour of agro-waste based gypsum hollow blocks for partition walls

Performance behaviour of agro-waste based gypsum hollow blocks for partition walls

Determination of dielectric properties of plaster blocks for sealing masonry using non-destructive frequency scanning methods

Perforated Steel Stud to Improve the Acoustic Insulation of Drywall Partitions

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