Properties of alkali-activated slag concrete

Tarja Häkkinen

Research output: Book/ReportReportProfessional

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

NameTiedotteita / Valtion teknillinen tutkimuskeskus
PublisherVTT
Volume540

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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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/ReportReportProfessional

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 - Tiedotteita / Valtion teknillinen tutkimuskeskus

BT - Properties of alkali-activated slag concrete

PB - VTT Technical Research Centre of Finland

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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).