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Sulphate and seawater resistance of mortar bars prepared with ternary cement CEM V/A (S-F) 42.5
This paper describes the sulphate and seawater resistance of mortar bars prepared with ternary blended cement, CEM V/A (S-F) 42,5 N. The ternary blended cement used was composed of 50 % Portland cement, 25 % blast furnace slag and 25 % pulverised fuel ash, by mass. The study consisted of expansion tests on mortar bars, followed by microscopic analysis to characterise the microstructure and the mineralogy. The mortar bars prepared with the ternary blended cement showed high sulphate resistance in a sodium sulfate solution due to less formation of massive gypsum and ettringite, caused mainly by a lower clinker content. Contrary, it showed a lesser resistance in artificial seawater as compared to ordinary Portland cement due to a higher formation of MSH and gypsum also brought about by a lower clinker content. Its performance was however better than for the binary cement CEM II/B-F (with 25 % fly ash). In the latter case, it is likely that the lower permeability of the ternary cement paste more than counteract the effect of the lower clinker content.
Sulphate and seawater resistance of mortar bars prepared with ternary cement CEM V/A (S-F) 42.5
This paper describes the sulphate and seawater resistance of mortar bars prepared with ternary blended cement, CEM V/A (S-F) 42,5 N. The ternary blended cement used was composed of 50 % Portland cement, 25 % blast furnace slag and 25 % pulverised fuel ash, by mass. The study consisted of expansion tests on mortar bars, followed by microscopic analysis to characterise the microstructure and the mineralogy. The mortar bars prepared with the ternary blended cement showed high sulphate resistance in a sodium sulfate solution due to less formation of massive gypsum and ettringite, caused mainly by a lower clinker content. Contrary, it showed a lesser resistance in artificial seawater as compared to ordinary Portland cement due to a higher formation of MSH and gypsum also brought about by a lower clinker content. Its performance was however better than for the binary cement CEM II/B-F (with 25 % fly ash). In the latter case, it is likely that the lower permeability of the ternary cement paste more than counteract the effect of the lower clinker content.
Sulphate and seawater resistance of mortar bars prepared with ternary cement CEM V/A (S-F) 42.5
Sulfat- und Meerwasserbeständigkeit von Mörtelprismen herstellt aus dreifach gemischten Zement CEM V/A (S-F) 42,5
Larbi, J.A. (Autor:in) / Visser, J.H.M. (Autor:in)
2003
12 Seiten, 9 Bilder, 2 Tabellen, 12 Quellen
Aufsatz (Konferenz)
Englisch
Ettringit , Flugasche , Gips , Hochofenschlacke , Klinker , Längenmessung , Meerwasser , Mikroskopie , Mikrostruktur , Mineralogie , Mörtel , Natriumsulfat , Permeabilität , Portlandzement , Sulfatbeständigkeit , Zement
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