Mechanical and acoustic properties of fiber-reinforced alkali-activated slag foam concretes containing lightweight structural aggregates

M. Mastali (Corresponding Author), P. Kinnunen, Heikki Isomoisio, Marjaana Karhu, M. Illikainen

    Research output: Contribution to journalArticleScientificpeer-review

    14 Citations (Scopus)

    Abstract

    This experimental study aimed to develop alkali-activated slag foam concretes with good acoustic properties for the indoor walls of residential buildings. Petrit-T, which is a by-product obtained in the manufacturing of sponge iron with a fine particle-size distribution and with rich calcium content, was used to prepare the structural lightweight aggregates. The produced lightweight structural aggregates were used in the preparation of alkali-activated slag binders, wherein ground granulated blast-furnace slag (GGBFS) as the binder was activated by an alkali solution. In the first stage of this study, the effects of using different types of fibers, including Polyvinyl alcohol (PVA), polypropylene (PP), and basalt, on the mechanical properties of alkali-activated slag binders were investigated. The mechanical properties were evaluated in terms of the compressive and flexural strengths. Thereafter, to achieve the best performing fiber reinforced alkali-activated slag concrete in terms of mechanical properties, the developed fiber-reinforced composition was used to generate alkali-activated slag foam concretes using different pre-made foam dosages (10, 15, 20, 25, 30, and 35% of the total binder mass). Finally, alkali-activated slag foam concretes were developed by varying the density in the range of 0.55–1.5 g/cm3; compressive strength in the range 2.5–13 MPa; and acoustic absorption coefficients higher than 0.5 in the medium-to-high frequency regions. Moreover, the density and acoustic properties were found to be linearly correlated.

    Original languageEnglish
    Pages (from-to)371-381
    Number of pages11
    JournalConstruction and Building Materials
    Volume187
    DOIs
    Publication statusPublished - 30 Oct 2018
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Acoustic properties
    Alkalies
    Slags
    Foams
    Concretes
    Mechanical properties
    Fibers
    Binders
    Compressive strength
    Sponge iron
    Polyvinyl Alcohol
    Basalt
    Polypropylenes
    Polyvinyl alcohols
    Particle size analysis
    Bending strength
    Byproducts
    Calcium
    Acoustics
    Chemical analysis

    Keywords

    • Acoustic properties
    • Alkali-activated slag foam concrete
    • Lightweight panels
    • Lightweight structural aggregates
    • Mechanical characterizations

    Cite this

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    title = "Mechanical and acoustic properties of fiber-reinforced alkali-activated slag foam concretes containing lightweight structural aggregates",
    abstract = "This experimental study aimed to develop alkali-activated slag foam concretes with good acoustic properties for the indoor walls of residential buildings. Petrit-T, which is a by-product obtained in the manufacturing of sponge iron with a fine particle-size distribution and with rich calcium content, was used to prepare the structural lightweight aggregates. The produced lightweight structural aggregates were used in the preparation of alkali-activated slag binders, wherein ground granulated blast-furnace slag (GGBFS) as the binder was activated by an alkali solution. In the first stage of this study, the effects of using different types of fibers, including Polyvinyl alcohol (PVA), polypropylene (PP), and basalt, on the mechanical properties of alkali-activated slag binders were investigated. The mechanical properties were evaluated in terms of the compressive and flexural strengths. Thereafter, to achieve the best performing fiber reinforced alkali-activated slag concrete in terms of mechanical properties, the developed fiber-reinforced composition was used to generate alkali-activated slag foam concretes using different pre-made foam dosages (10, 15, 20, 25, 30, and 35{\%} of the total binder mass). Finally, alkali-activated slag foam concretes were developed by varying the density in the range of 0.55–1.5 g/cm3; compressive strength in the range 2.5–13 MPa; and acoustic absorption coefficients higher than 0.5 in the medium-to-high frequency regions. Moreover, the density and acoustic properties were found to be linearly correlated.",
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    author = "M. Mastali and P. Kinnunen and Heikki Isomoisio and Marjaana Karhu and M. Illikainen",
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    Mechanical and acoustic properties of fiber-reinforced alkali-activated slag foam concretes containing lightweight structural aggregates. / Mastali, M. (Corresponding Author); Kinnunen, P.; Isomoisio, Heikki; Karhu, Marjaana; Illikainen, M.

    In: Construction and Building Materials, Vol. 187, 30.10.2018, p. 371-381.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Mechanical and acoustic properties of fiber-reinforced alkali-activated slag foam concretes containing lightweight structural aggregates

    AU - Mastali, M.

    AU - Kinnunen, P.

    AU - Isomoisio, Heikki

    AU - Karhu, Marjaana

    AU - Illikainen, M.

    PY - 2018/10/30

    Y1 - 2018/10/30

    N2 - This experimental study aimed to develop alkali-activated slag foam concretes with good acoustic properties for the indoor walls of residential buildings. Petrit-T, which is a by-product obtained in the manufacturing of sponge iron with a fine particle-size distribution and with rich calcium content, was used to prepare the structural lightweight aggregates. The produced lightweight structural aggregates were used in the preparation of alkali-activated slag binders, wherein ground granulated blast-furnace slag (GGBFS) as the binder was activated by an alkali solution. In the first stage of this study, the effects of using different types of fibers, including Polyvinyl alcohol (PVA), polypropylene (PP), and basalt, on the mechanical properties of alkali-activated slag binders were investigated. The mechanical properties were evaluated in terms of the compressive and flexural strengths. Thereafter, to achieve the best performing fiber reinforced alkali-activated slag concrete in terms of mechanical properties, the developed fiber-reinforced composition was used to generate alkali-activated slag foam concretes using different pre-made foam dosages (10, 15, 20, 25, 30, and 35% of the total binder mass). Finally, alkali-activated slag foam concretes were developed by varying the density in the range of 0.55–1.5 g/cm3; compressive strength in the range 2.5–13 MPa; and acoustic absorption coefficients higher than 0.5 in the medium-to-high frequency regions. Moreover, the density and acoustic properties were found to be linearly correlated.

    AB - This experimental study aimed to develop alkali-activated slag foam concretes with good acoustic properties for the indoor walls of residential buildings. Petrit-T, which is a by-product obtained in the manufacturing of sponge iron with a fine particle-size distribution and with rich calcium content, was used to prepare the structural lightweight aggregates. The produced lightweight structural aggregates were used in the preparation of alkali-activated slag binders, wherein ground granulated blast-furnace slag (GGBFS) as the binder was activated by an alkali solution. In the first stage of this study, the effects of using different types of fibers, including Polyvinyl alcohol (PVA), polypropylene (PP), and basalt, on the mechanical properties of alkali-activated slag binders were investigated. The mechanical properties were evaluated in terms of the compressive and flexural strengths. Thereafter, to achieve the best performing fiber reinforced alkali-activated slag concrete in terms of mechanical properties, the developed fiber-reinforced composition was used to generate alkali-activated slag foam concretes using different pre-made foam dosages (10, 15, 20, 25, 30, and 35% of the total binder mass). Finally, alkali-activated slag foam concretes were developed by varying the density in the range of 0.55–1.5 g/cm3; compressive strength in the range 2.5–13 MPa; and acoustic absorption coefficients higher than 0.5 in the medium-to-high frequency regions. Moreover, the density and acoustic properties were found to be linearly correlated.

    KW - Acoustic properties

    KW - Alkali-activated slag foam concrete

    KW - Lightweight panels

    KW - Lightweight structural aggregates

    KW - Mechanical characterizations

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    U2 - 10.1016/j.conbuildmat.2018.07.228

    DO - 10.1016/j.conbuildmat.2018.07.228

    M3 - Article

    AN - SCOPUS:85050807444

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    EP - 381

    JO - Construction and Building Materials

    JF - Construction and Building Materials

    SN - 0950-0618

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