Abstract
| Original language | English |
|---|---|
| Place of Publication | Espoo |
| Publisher | VTT Technical Research Centre of Finland |
| Number of pages | 110 |
| ISBN (Print) | 951-38-2918-9 |
| Publication status | Published - 1987 |
| MoE publication type | D4 Published development or research report or study |
Publication series
| Series | Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports |
|---|---|
| Number | 486 |
| ISSN | 0358-5077 |
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Keywords
- slag concrete
- slag cements
- F-concrete
- concrete durability
- microstructure
- alkali aggregates
- permeability
Cite this
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Microstructural and permeability properties of alkali-activated slag concrete. / Häkkinen, Tarja; Pyy, Hannu; Koskinen, Pertti.
Espoo : VTT Technical Research Centre of Finland, 1987. 110 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 486).Research output: Book/Report › Report
TY - BOOK
T1 - Microstructural and permeability properties of alkali-activated slag concrete
AU - Häkkinen, Tarja
AU - Pyy, Hannu
AU - Koskinen, Pertti
PY - 1987
Y1 - 1987
N2 - The study consists of a series of experimental investigations concerning the microstructural and permeability properties of alkali-activated slag concrete. The object of study is the so-called F-concrete. F-cement is finely ground slag to be activated by a combination of alkali metal compounds and rendered consistent in its fresh state by means of ligno-sulphonates. The influence of different parameters on the structure of F-concrete was studied by means of thermal analysis, X-ray diffraction and mercury intrusion. In addition, strength properties and permeability properties were studied. The influence of slag binder on chloride penetration and on carbonation was investigated. The permeability properties of F-concrete were also studied by means of capillary suction, water penetration and gas penetration. The parameters considered in the experimental studies were the quality of slag and additive, the proportion of concrete constituents and the curing conditions of the concrete specimens. According to the results the hardened slag paste is very dense, but the structure contains microscopic cracks due to hydration shrinkage. The effect of the cracks on the permeability properties was found to be significant. On the basis of strength results it is possible to produce F-concrete with very good mechanical properties.
AB - The study consists of a series of experimental investigations concerning the microstructural and permeability properties of alkali-activated slag concrete. The object of study is the so-called F-concrete. F-cement is finely ground slag to be activated by a combination of alkali metal compounds and rendered consistent in its fresh state by means of ligno-sulphonates. The influence of different parameters on the structure of F-concrete was studied by means of thermal analysis, X-ray diffraction and mercury intrusion. In addition, strength properties and permeability properties were studied. The influence of slag binder on chloride penetration and on carbonation was investigated. The permeability properties of F-concrete were also studied by means of capillary suction, water penetration and gas penetration. The parameters considered in the experimental studies were the quality of slag and additive, the proportion of concrete constituents and the curing conditions of the concrete specimens. According to the results the hardened slag paste is very dense, but the structure contains microscopic cracks due to hydration shrinkage. The effect of the cracks on the permeability properties was found to be significant. On the basis of strength results it is possible to produce F-concrete with very good mechanical properties.
KW - slag concrete
KW - slag cements
KW - F-concrete
KW - concrete durability
KW - microstructure
KW - alkali aggregates
KW - permeability
M3 - Report
SN - 951-38-2918-9
T3 - Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports
BT - Microstructural and permeability properties of alkali-activated slag concrete
PB - VTT Technical Research Centre of Finland
CY - Espoo
ER -