Non-traditional aluminous binders: composition — properties correlations

M. Amareanu; L. Melita

doi:10.17073/1683-4518-2018-6-34-40

Non-traditional aluminous binders: composition — properties correlations

M. Amareanu, L. Melita

https://doi.org/10.17073/1683-4518-2018-6-34-40

Full Text:

Abstract

The paper approaches the synthesis mechanisms, the hydration processes of several super-refractory calcia baria aluminous cements and their behavior in concretes. The studies concern the complex hardening processes of C₂BA₄, CA₂‒C₂BA₄ binding systems, and CA₂‒C₂BA₄‒ssCA-BA binding system, thermic treated at different temperatures, time of 2 hours. For the selected compositions, the compounds reactivity and the nature of obtained hydrates were assessed. Information regarding the synthesis and the degree of mineralogical compounds hydration were obtained by X-ray diffraction. Concretes were prepared with 15 % cement, mass percent, and 85 % tabular alumina-aggregate. On these concretes, from carried out investigations, it was found that the studied cements develop binding properties when the adequate mineral compositions are obtained.

Keywords

calcia baria aluminous cements, superrefractory aluminous cements, synthesis process mechanism, conversion level of hydration,

About the Authors

M. Amareanu

Технический университет гражданского строительства Бухареста
Romania

L. Melita

Технический университет гражданского строительства Бухареста
Romania

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Supplementary files

For citation: Amareanu M., Melita L. Non-traditional aluminous binders: composition — properties correlations. NOVYE OGNEUPORY (NEW REFRACTORIES). 2018;(6):34-40. https://doi.org/10.17073/1683-4518-2018-6-34-40

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