Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Cement paste colouring in concretes
Tests have been carried out with chemicals that give rise to coloured compounds through a selective reaction with certain mineral species present in cement paste. In the case of carbonated concretes (pH congruent 9), the reaction with potassium ferrocyanate dyes the cement paste a strong blue colour that disappears when the concrete is treated again with a slightly more alkaline solution. Both in carbonated concretes and in young concretes with an alkaline reserve (pH congruent 12.5), the tannic acid dyes the cement paste dark brown.
Cement paste colouring in concretes
Tests have been carried out with chemicals that give rise to coloured compounds through a selective reaction with certain mineral species present in cement paste. In the case of carbonated concretes (pH congruent 9), the reaction with potassium ferrocyanate dyes the cement paste a strong blue colour that disappears when the concrete is treated again with a slightly more alkaline solution. Both in carbonated concretes and in young concretes with an alkaline reserve (pH congruent 12.5), the tannic acid dyes the cement paste dark brown.
Cement paste colouring in concretes
Chinchon, S. (Autor:in) / Garcia, J. (Autor:in) / Lopez-Atalaya, M. (Autor:in) / Linares, A. (Autor:in) / Vera, R. (Autor:in)
Cement and Concrete Research ; 34 ; 1987-1991
2004
5 Seiten, 8 Quellen
Aufsatz (Zeitschrift)
Englisch
Zement , Farbe , Bildanalyse , pH-Einfluss , Carbonisieren , Zementpaste , Farbstoffaufnahme , Farbstoff , Zinnsäure , Cyanblau , Kaliumcyanat
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