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Novel Use of Kaolin Wastes in Blended Cements
Author(s) -
Rodríguez Largo Olga,
Vigil de la Villa Raquel,
Sánchez de Rojas Maria Isabel,
Frías Moisés
Publication year - 2009
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2009.03231.x
Subject(s) - portlandite , aluminate , calcium silicate hydrate , portland cement , thermogravimetric analysis , hydrate , hydrotalcite , cement , chemical engineering , materials science , calcium silicate , ettringite , silicate , mineralogy , chemistry , composite material , organic chemistry , engineering , catalysis
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.