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Impacts of casting scales and harsh conditions on the thermal, acoustic, and mechanical properties of indoor acoustic panels made with fiber-reinforced alkali-activated slag foam concretes [Elektronski vir]Mastali, Mohammad ...This paper presents experimental results regarding the efficiency of using acoustic panels made with fiber-reinforced alkali-activated slag foam concrete containing lightweight recycled aggregates ... produced by using Petrit-T (tunnel kiln slag). In the first stage, 72 acoustic panels with dimension 500 % 500 % 35 mm were cast and prepared. The mechanical properties of the panels were then assessed in terms of their compressive and flexural strengths. Moreover, the durability properties of acoustic panels were studied using harsh conditions (freeze/thaw and carbonation tests). The efficiency of the lightweight panels was also assessed in terms of thermal properties. In the second stage, 50 acoustic panels were used to cover the floor area in a reverberation room. The acoustic absorption in diffuse field conditions was measured, and the interrupted random noise source method was used to record the sound pressure decay rate over time. Moreover, the acoustic properties of the panels were separately assessed by impedance tubes and airflow resistivity measurements. The recorded results from these two sound absorption evaluations were compared. Additionally, a comparative study was presented on the results of impedance tube measurements to compare the influence of casting volumes (large and small scales) on the sound absorption of the acoustic panels. In the last stage, a comparative study was implemented to clarify the effects of harsh conditions on the sound absorption of the acoustic panels. The results showed that casting scale had great impacts on the mechanical and physical properties. Additionally, it was revealed that harsh conditions improved the sound properties of acoustic panels due to their effects on the porous structure of materials.Source: Materials [Elektronski vir]. - ISSN 1996-1944 (Vol. 12, no. 5, 2019, str. 1-26)Type of material - e-article ; adult, seriousPublish date - 2019Language - englishCOBISS.SI-ID - 2434151
Author | Mastali, Mohammad ... |
Title | Impacts of casting scales and harsh conditions on the thermal, acoustic, and mechanical properties of indoor acoustic panels made with fiber-reinforced alkali-activated slag foam concretes [Elektronski vir] |
Publication date | 2019-03-11 |
COBISS.SI-ID | 2434151 |
Publication version in repository | Publisher's version |
Publication licence | Creative Commons Attribution 4.0 International |
Embargo | Immediate publication for public |
Project(s) from which the publication was funded
Title | Acronym | Project ID | Funder |
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Mineral products from Petrit-T sidestream technology | 15035 |
European Institute of Innovation and Technology |
Files that belong to the publication
Link |
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https://www.mdpi.com/1996-1944/12/5/825 |
https://dirros.openscience.si/IzpisGradiva.php?id=17003 |
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Mastali, Mohammad | |
Kinnunen, Paivo | |
Karhu, Marjaana | |
Abdollahnejad, Zahra | |
Korat, Lidija, 1986- | 33198 |
Ducman, Vilma | 11292 |
Alzaza, Ahmad | |
Illikainen, Mirja |
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