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Influence of the cement type on the resistance of concrete to feed acids
Concrete in animal houses is subject to aggressive substances from feed and manure. Chemical attack by the most important feed acids, lactic and acetic acid and abrasion caused by animals and cleaning, were simulated and studied using accelerated corrosion tests. The resistance of concrete prisms with different cement types and approximately constant water-to-cement ratio, to simulation liquids with different pH-values, was investigated. The decrease of volume in terms of percentage and the mass loss per unit area were measured, as well as the pH-change and calcium content of the liquids. It appeared that the cement type had an important influence on concrete resistance in the highly to very highly aggressive simulation liquids. Four groups with decreasing vulnerability to the attack were distinguished: portland cement without (3CaO)(Al2O3), ordinary portland cement, cement containing fly ashes, blastfurnace slag cement. The percentage of slag in the slag cement and the cement content of the pozzolanic cement had no significant influence.
Influence of the cement type on the resistance of concrete to feed acids
Concrete in animal houses is subject to aggressive substances from feed and manure. Chemical attack by the most important feed acids, lactic and acetic acid and abrasion caused by animals and cleaning, were simulated and studied using accelerated corrosion tests. The resistance of concrete prisms with different cement types and approximately constant water-to-cement ratio, to simulation liquids with different pH-values, was investigated. The decrease of volume in terms of percentage and the mass loss per unit area were measured, as well as the pH-change and calcium content of the liquids. It appeared that the cement type had an important influence on concrete resistance in the highly to very highly aggressive simulation liquids. Four groups with decreasing vulnerability to the attack were distinguished: portland cement without (3CaO)(Al2O3), ordinary portland cement, cement containing fly ashes, blastfurnace slag cement. The percentage of slag in the slag cement and the cement content of the pozzolanic cement had no significant influence.
Influence of the cement type on the resistance of concrete to feed acids
Einfluß verschiedener Zementarten auf die Beständigkeit von Beton gegen Säuren aus Futtermitteln
Belie, N. De (author) / Verselder, H.J. (author) / Blaere, B. De (author) / Nieuwenburg, D. Van (author) / Verschoore, R. (author)
Cement and Concrete Research ; 26 ; 1717-1725
1996
9 Seiten, 4 Bilder, 2 Tabellen, 14 Quellen
Article (Journal)
English
Influence of the Cement Type on the Resistance of Concrete to Feed Acids
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