Intersectii / Intersections

Vol.4 No.4 Art.45

Resistance of Concrete with Fine-Ground Granulated Slag Admixture to Sulphates and Acidic Aggressive Media

by Jirí Brožovský, Tomáš Fojtík, and Amos Dufka

Abstract
Blast-furnace slag granules may be used not only in mixed Portland cement making but it is also suitable as a partial substitution of Portland cement in concrete. Substitution of 20 - 50 % Portland cement by fine-ground blast-furnace slag granules increases concrete resistance to aggressive media in comparison with concrete made of mere Portland cement (CEM I). In the given case, concrete resistance to sulphates (concentration SO42- - 10 000 mg/l) and to acidic aggressive media (pH = 3) was monitored.

KEYWORDS: Concrete resistance, sulphates, acid(ic) aggressive medium, blast-furnace slag.

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