Properties of alkali-activated slag concrete

Tarja Häkkinen

    Research output: Book/ReportReport

    Abstract

    The study consists of a literal survey of the structure and properties of alkali-activated slag concrete and an experimental study of the properties of the so-called F-concrete. F-cement is finely ground glassy slag to be activated by a combination of alkali metal compounds and rendered consistent in its fresh state by means of lignosulphonates. Many investigations have been conducted in order to study the possibility of accelerating the strength development of slag when using activators other than Portland cement (or calcium hydroxide) or gypsum. Chemicals frequently used are strongly alkaline compounds such as hydroxide, sodium carbonate and sodium silicates. The results have not usually led to major industrial use. F-cement is developed in order to produce low porosity concrete. The water-cement ratio of a fluid F-concrete mix is about 0.35. According to the tests performed, typical properties of hardened F-concrete appeared to consist of high early strengths in accordance thermal treatment, continuous strength gain to advanced ages and good chemical resistance. Deformation properties and physical resistance did not differ much from those of the reference concrete made of Portland cement.
    Original languageEnglish
    Place of PublicationEspoo
    PublisherVTT Technical Research Centre of Finland
    Number of pages66
    ISBN (Print)951-38-2502-7
    Publication statusPublished - 1986
    MoE publication typeD4 Published development or research report or study

    Publication series

    SeriesValtion teknillinen tutkimuskeskus. Tiedotteita
    Number540
    ISSN0358-5085

    Fingerprint

    Slags
    Concretes
    Cements
    Portland cement
    Alkali metal compounds
    Sodium
    Hydrated lime
    Chemical resistance
    Concrete mixtures
    Gypsum
    Silicates
    Carbonates
    Porosity
    Heat treatment
    Fluids
    Water

    Keywords

    • concrete
    • slag concrete
    • structure
    • properties

    Cite this

    Häkkinen, T. (1986). Properties of alkali-activated slag concrete. Espoo: VTT Technical Research Centre of Finland. Valtion teknillinen tutkimuskeskus. Tiedotteita, No. 540
    Häkkinen, Tarja. / Properties of alkali-activated slag concrete. Espoo : VTT Technical Research Centre of Finland, 1986. 66 p. (Valtion teknillinen tutkimuskeskus. Tiedotteita; No. 540).
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    year = "1986",
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    Häkkinen, T 1986, Properties of alkali-activated slag concrete. Valtion teknillinen tutkimuskeskus. Tiedotteita, no. 540, VTT Technical Research Centre of Finland, Espoo.

    Properties of alkali-activated slag concrete. / Häkkinen, Tarja.

    Espoo : VTT Technical Research Centre of Finland, 1986. 66 p. (Valtion teknillinen tutkimuskeskus. Tiedotteita; No. 540).

    Research output: Book/ReportReport

    TY - BOOK

    T1 - Properties of alkali-activated slag concrete

    AU - Häkkinen, Tarja

    PY - 1986

    Y1 - 1986

    N2 - The study consists of a literal survey of the structure and properties of alkali-activated slag concrete and an experimental study of the properties of the so-called F-concrete. F-cement is finely ground glassy slag to be activated by a combination of alkali metal compounds and rendered consistent in its fresh state by means of lignosulphonates. Many investigations have been conducted in order to study the possibility of accelerating the strength development of slag when using activators other than Portland cement (or calcium hydroxide) or gypsum. Chemicals frequently used are strongly alkaline compounds such as hydroxide, sodium carbonate and sodium silicates. The results have not usually led to major industrial use. F-cement is developed in order to produce low porosity concrete. The water-cement ratio of a fluid F-concrete mix is about 0.35. According to the tests performed, typical properties of hardened F-concrete appeared to consist of high early strengths in accordance thermal treatment, continuous strength gain to advanced ages and good chemical resistance. Deformation properties and physical resistance did not differ much from those of the reference concrete made of Portland cement.

    AB - The study consists of a literal survey of the structure and properties of alkali-activated slag concrete and an experimental study of the properties of the so-called F-concrete. F-cement is finely ground glassy slag to be activated by a combination of alkali metal compounds and rendered consistent in its fresh state by means of lignosulphonates. Many investigations have been conducted in order to study the possibility of accelerating the strength development of slag when using activators other than Portland cement (or calcium hydroxide) or gypsum. Chemicals frequently used are strongly alkaline compounds such as hydroxide, sodium carbonate and sodium silicates. The results have not usually led to major industrial use. F-cement is developed in order to produce low porosity concrete. The water-cement ratio of a fluid F-concrete mix is about 0.35. According to the tests performed, typical properties of hardened F-concrete appeared to consist of high early strengths in accordance thermal treatment, continuous strength gain to advanced ages and good chemical resistance. Deformation properties and physical resistance did not differ much from those of the reference concrete made of Portland cement.

    KW - concrete

    KW - slag concrete

    KW - structure

    KW - properties

    M3 - Report

    SN - 951-38-2502-7

    T3 - Valtion teknillinen tutkimuskeskus. Tiedotteita

    BT - Properties of alkali-activated slag concrete

    PB - VTT Technical Research Centre of Finland

    CY - Espoo

    ER -

    Häkkinen T. Properties of alkali-activated slag concrete. Espoo: VTT Technical Research Centre of Finland, 1986. 66 p. (Valtion teknillinen tutkimuskeskus. Tiedotteita; No. 540).