Supercritical Carbonation of Calcium Aluminate Cement

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Títol:	Supercritical Carbonation of Calcium Aluminate Cement
Autor/a:	Fernández Carrasco, Lucía; Miravitlles, C; Rius, J.
Altres autors:	Universitat Politècnica de Catalunya. Departament de Construccions Arquitectòniques I; Universitat Politècnica de Catalunya. MATCAR - Materials de Construcció i Carreteres
Abstract:	The microstructural changes occurring during supercritical carbonation (scCO2) of calcium aluminate cement (CAC) and changes to its strength have been investigated. Cylindrical specimens of CAC cured at different temperatures were prepared and then subjected to scCO2. It is shown that CAC carbonation in supercritical conditions is accelerated with a positive effect on the compressive strength. Due to the scCO2 treatment, both conversion and alkaline hydrolysis are avoided. The best behaviour of the studied specimens was attained for samples cured at 25 °C. The residual compounds after the scCO2 process, i.e. monocalcium aluminate, calcium carbonate and aluminium hydroxide are durable in normal ambient conditions. Complete carbonation of CAC is particularly important for the reinforcement of CAC with polymer fibres to improve its mechanical strength.
Abstract:	Peer Reviewed
Matèries:	-Àrees temàtiques de la UPC::Edificació::Materials de construcció::Ciment -Cement -Ciment
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Tipus de document:	Article - Versió publicada Article
Publicat per:	Elsevier
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Fernández Carrasco, Lucía; Puertas, F.; Blanco Varela, M.Teresa; Vázquez, T.; Rius, J.

Rius, J.; Figueras, M.; Herrero, R.; Farjas Silva, Jordi; Pi i Vila, Francesc; Orriols Tubella, Gaspar

Ubalde Bauló, Josep Miquel; Rius, J.; Poch, Rosa M.

Estruch, Javier; Rius, J.; Poch, Rosa M.

Rius, J.; Figueras, M.; Herrero, R.; Pi i Vila, Francesc; Farjas Silva, Jordi; Orriols Tubella, Gaspar

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