Novel Use of Kaolin Wastes in Blended Cements

Novel Use of Kaolin Wastes in Blended Cements

This paper describes the influence of different thermally activated clay wastes (ACW) on the hydration phases in cement pastes containing two percentages of addition (10% and 20%). Results show that the main products obtained during hydration of cement pastes containing ACW were portlandite, calcium...

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Veröffentlicht in:Journal of the American Ceramic Society 2009-10, Vol.92 (10), p.2443-2446
Hauptverfasser: Rodríguez Largo, Olga, Vigil de la Villa, Raquel, Sánchez de Rojas, Maria Isabel, Frías, Moisés
Format: Artikel
Sprache:eng
Schlagworte:
Cement
Cement hydration
Ceramics
Materials science
Thermogravimetric analysis
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Beschreibung
Zusammenfassung:This paper describes the influence of different thermally activated clay wastes (ACW) on the hydration phases in cement pastes containing two percentages of addition (10% and 20%). Results show that the main products obtained during hydration of cement pastes containing ACW were portlandite, calcium aluminate hydrates, calcium silicate hydrates, and hydrotalcite‐type compounds. Portlandite formation decreases when addition percentage is 20%, contrary to tetracalcium aluminate hydrate, which increases in similar conditions. The ACW that showed the most portlandite consumption was ACW1 (700°C, 2 h) according to thermogravimetric data.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1551-2916.2009.03231.x