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

Youssef El Hafiane; Agnès Smith; Y. Abouliatim; A. Benhammou; A. Abourriche; L. Nibou; B. Tanouti; Jean-Pierre Bonnet

doi:10.1016/j.conbuildmat.2017.08.023

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

Youssef El Hafiane ^{1, *} Agnès Smith ^{1, *} Y. Abouliatim ² A. Benhammou ² A. Abourriche ² L. Nibou ² B. Tanouti ³ Jean-Pierre Bonnet ⁴

* Auteur correspondant

1 SPCTS-AXE1 - Axe 1 : procédés céramiques

SPCTS - Science des Procédés Céramiques et de Traitements de Surface

2 LMPEQ - Laboratoire Matériaux Procédés Environnement Qualité

3 LMACE - Laboratoire de la Matière Condensée et de l’Environnement

4 SPCTS - Science des Procédés Céramiques et de Traitements de Surface

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.

Keywords : Calcium aluminate cement Calcium carbonates Dispersant Microstructure Mechanical strength

Type de document :

Article dans une revue

Domaine :

Sciences de l'ingénieur [physics] / Matériaux

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https://hal-unilim.archives-ouvertes.fr/hal-01635680
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Soumis le : mercredi 15 novembre 2017 - 15:19:17
Dernière modification le : dimanche 16 février 2020 - 22:38:01

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

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

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