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Cement paste colouring in concretes
AbstractTests 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≅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≅12.5), the tannic acid dyes the cement paste dark brown.
Cement paste colouring in concretes
AbstractTests 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≅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≅12.5), the tannic acid dyes the cement paste dark brown.
Cement paste colouring in concretes
Chinchón, S. (author) / Garcı́a, J. (author) / López-Atalaya, M. (author) / Linares, A. (author) / Vera, R. (author)
Cement and Concrete Research ; 34 ; 1987-1991
2004-02-19
5 pages
Article (Journal)
Electronic Resource
English
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