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This paper deals with the strength development, pore structure development, rapid chloride permeability and water permeability of alkali-activated slag mortars activated by 6 % (by mass of Na2O) NaOH, Na2CO3 and Na2SiO3. The Na2SiO3-activated slag mortars exhibited the highest strength at both early and later ages, even much higher than a typical commercial Type III portland cement. NaOH-activated slag mortars exhibited the lowest strength. The pore structure measurements were consistent with strength results. Four common strength-porosity equations: Balshin's, Ryshkevitch's, Schiller's, and Hasselmann's equations, fit the experimental results from alkali-activated slag mortars with sufficient efficiency; of which Hasselmann's equation fit best. The charge passed through the mortar specimens in the rapid chloride ion permeability test appeared to be dependent more on the chemistry of pore solution than on the pore structure of the mortars. Limited results from water permeability testing appeared to be consistent with strength and pore structure measurements.
This paper deals with the strength development, pore structure development, rapid chloride permeability and water permeability of alkali-activated slag mortars activated by 6 % (by mass of Na2O) NaOH, Na2CO3 and Na2SiO3. The Na2SiO3-activated slag mortars exhibited the highest strength at both early and later ages, even much higher than a typical commercial Type III portland cement. NaOH-activated slag mortars exhibited the lowest strength. The pore structure measurements were consistent with strength results. Four common strength-porosity equations: Balshin's, Ryshkevitch's, Schiller's, and Hasselmann's equations, fit the experimental results from alkali-activated slag mortars with sufficient efficiency; of which Hasselmann's equation fit best. The charge passed through the mortar specimens in the rapid chloride ion permeability test appeared to be dependent more on the chemistry of pore solution than on the pore structure of the mortars. Limited results from water permeability testing appeared to be consistent with strength and pore structure measurements.
Strength, pore structure and permeability of alkali-activated slag mortars
Festigkeit, Porenstruktur und Durchlässigkeit von Hochofenmörtel aktiviert durch Alkaliionen
Shi, C. (author)
Cement and Concrete Research ; 26 ; 1789-1799
1996
11 Seiten, 6 Bilder, 2 Tabellen, 21 Quellen
Article (Journal)
English
Pore , Mörtel , Chlorid , Wasser , Diffusion , mechanische Festigkeit , Porosität , Natriumhydroxid , Natriumcarbonat , Natriumsilicat , Porenstruktur
Strength, Pore Structure and Permeability of Alkali-Activated Slag Mortars
| British Library Online Contents | 1996
Strength, Pore Structure and Permeability of Alkali-Activated Slag Mortars
| Online Contents | 1996
Alkali-activated slag mortars: Mechanical strength behaviour
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Alkali-activated slag mortars: Mechanical strength behaviour
| Tema Archive | 1999
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