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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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.",
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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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T1 - 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

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.

KW - Acoustic properties

KW - Blast furnace slag

KW - Lightweight acoustic panels

KW - Mechanical properties

KW - Thermal insulation properties

KW - Tunnel kiln slag

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JF - Materials

SN - 1996-1944

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