Materiales de Construcción, Vol 39, No 214 (1989)

Manganese substitutions into the portland cement clinker phases

F. Puertas

M. Teresa Blanco

T. Vázquez


The effect of manganese substitution into the crystal structures of the main Portland cement clinker phases (3CaO.SiO2, 2CaO.SiO2, 3CaO.Al2O3, 2CaO.Fe2O3 y 4CaO.Al2O3.Fe2O3) has been studied by X-ray and analytical electron microscopy.
In oxidizing conditions, the limit of solid solution in 3CaO.SiO2 is about 0.72 ±0.11% (wt), while in 2CaO.SiO2 is 1.53±0,12%(wt). Mn solid solubility on 3CaO.Al2O3structure, in oxidizing conditions is close to 0.78 ± 0,12% (wt). In identical atmosphere, the proportion of Mn in the ferrite phases (2CaO.Fe2O3 and 4CaO.Al2O3.Fe2O3) is 6.80 ± 0.87% (wt) and 6.7% (wt), respectively.
To each mentioned clinker phases a solid solution formula has been proposed. In these formula, the manganese substitutions and also the different oxidation states which this element can be introduced in those crystalline structure are defined.

Full Text:


Copyright (c) 1989 Consejo Superior de Investigaciones Científicas (CSIC)

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.

Contact us

Technical support