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

Mohammad Mastali (Corresponding Author), Paivo Kinnunen, Marjaana Karhu, Zahra Abdollahnejad, Lidija Korat, Vilma Ducman, Ahmad Alzaza, Mirja Illikainen

    Research output: Contribution to journalArticleScientificpeer-review

    3 Citations (Scopus)

    Abstract

    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.

    Original languageEnglish
    Article number825
    JournalMaterials
    Volume12
    Issue number5
    DOIs
    Publication statusPublished - 2019
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Acoustic properties
    Alkalies
    Slags
    Foams
    Casting
    Thermodynamic properties
    Acoustics
    Concretes
    Mechanical properties
    Fibers
    Acoustic waves
    Carbonation
    Reverberation
    Kilns
    Acoustic noise
    Bending strength
    Compressive strength
    Tunnels
    Durability
    Physical properties

    Keywords

    • Acoustic properties
    • Blast furnace slag
    • Lightweight acoustic panels
    • Mechanical properties
    • Thermal insulation properties
    • Tunnel kiln slag

    Cite this

    Mastali, Mohammad ; Kinnunen, Paivo ; Karhu, Marjaana ; Abdollahnejad, Zahra ; Korat, Lidija ; Ducman, Vilma ; Alzaza, Ahmad ; Illikainen, Mirja. / 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. In: Materials. 2019 ; Vol. 12, No. 5.
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    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",
    abstract = "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.",
    keywords = "Acoustic properties, Blast furnace slag, Lightweight acoustic panels, Mechanical properties, Thermal insulation properties, Tunnel kiln slag",
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    year = "2019",
    doi = "10.3390/MA12050825",
    language = "English",
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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. / Mastali, Mohammad (Corresponding Author); Kinnunen, Paivo; Karhu, Marjaana; Abdollahnejad, Zahra; Korat, Lidija; Ducman, Vilma; Alzaza, Ahmad; Illikainen, Mirja.

    In: Materials, Vol. 12, No. 5, 825, 2019.

    Research output: Contribution to journalArticleScientificpeer-review

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    AU - Mastali, Mohammad

    AU - Kinnunen, Paivo

    AU - Karhu, Marjaana

    AU - Abdollahnejad, Zahra

    AU - Korat, Lidija

    AU - Ducman, Vilma

    AU - Alzaza, Ahmad

    AU - Illikainen, Mirja

    PY - 2019

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    AB - 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.

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    KW - Blast furnace slag

    KW - Lightweight acoustic panels

    KW - Mechanical properties

    KW - Thermal insulation properties

    KW - Tunnel kiln slag

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