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Substitution of aluminous cement by calcium carbonates in presence of carboxylic acid

Abstract : This paper presents results concerning the partial substitution of a calcium aluminate cement by calcium carbonate. The experimental parameters monitored in this study are the mechanical properties, the microstructure evolution through density measurements and the structure through analysis by X-ray diffraction. The major results of this study are the following: (1) It is possible to substitute a portion (10 wt%) of an aluminous cement by calcium carbonate, while improving the mechanical properties of the hardened material. This is achieved with a mass percentage of the carboxylic acid between 1 and 5%, relative to the dry mass, which acts as a good dispersant and leads therefore to densification of the hardened material. (2) When the mix consists of 50 wt% of aluminous cement and 50 wt% of calcium carbonate, the mechanical properties of the cured material are low and this happens whatever the percentage of added dispersant is.
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Soumis le : mercredi 15 novembre 2017 - 15:19:17
Dernière modification le : samedi 26 mars 2022 - 04:28:03




Youssef El Hafiane, Agnès Smith, Y. Abouliatim, A. Benhammou, A. Abourriche, et al.. Substitution of aluminous cement by calcium carbonates in presence of carboxylic acid. Construction and Building Materials, 2017, 154, pp.711 - 720. ⟨10.1016/j.conbuildmat.2017.08.023⟩. ⟨hal-01635680⟩



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