A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Studies on the carboaluminate formation in limestone filler-blended cements
Carboaluminates are hydration products of limestone-blended cements and they compete with monosulfoaluminate stability and ettringite transformation. In this paper a study about the hydration of pure C 3A phase with CaCO3 in the presence or not of gypsum and in a calcium hydroxide solution is related to the hydration products of portland and limestone-blended cements. Results show the formation of monocarboaluminates in systems containing C3A and CaCO3 while the tricarboaluminate was not found. Calcium hydroxide intervenes in these systems to form a calcium hemicarboaluminate hydroxide. In limestone-blended cements, calcium monocarboaluminate is immediately detected after hydration begun and the transformation of monosulfoaluminate to monocarboaluminate occurs at 28 days while the conversion of ettringite to monosulfoaluminate is deferred.
Studies on the carboaluminate formation in limestone filler-blended cements
Carboaluminates are hydration products of limestone-blended cements and they compete with monosulfoaluminate stability and ettringite transformation. In this paper a study about the hydration of pure C 3A phase with CaCO3 in the presence or not of gypsum and in a calcium hydroxide solution is related to the hydration products of portland and limestone-blended cements. Results show the formation of monocarboaluminates in systems containing C3A and CaCO3 while the tricarboaluminate was not found. Calcium hydroxide intervenes in these systems to form a calcium hemicarboaluminate hydroxide. In limestone-blended cements, calcium monocarboaluminate is immediately detected after hydration begun and the transformation of monosulfoaluminate to monocarboaluminate occurs at 28 days while the conversion of ettringite to monosulfoaluminate is deferred.
Studies on the carboaluminate formation in limestone filler-blended cements
Bonavetti, V.L. (author) / Rahhal, V.F. (author) / Irassar, E.F. (author)
Cement and Concrete Research ; 31 ; 853-859
2001
7 Seiten, 21 Quellen
Article (Journal)
English
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