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, Appendix 2. Derivative curves of TGA analysis given in Figure VII-4b and Figure VII-5b, p.150

, All mathematical equations mentioned in the present thesis

, From PhD work In international journals

Y. El-khessaimi, . El, A. Hafiane, R. Smith, C. Trauchessec et al., LECOMTE Solid state synthesis of pure Ye'elimite, Journal of the European Ceramic Society, vol.38, pp.3401-3411, 2018.

,

Y. El-khessaimi, Y. El, A. Hafiane, and . Smith-ye, elemite synthesis by chemical routes, Journal of the European Ceramic Society, vol.39, pp.1683-1695, 2019.

,

Y. El-khessaimi, Y. El, and A. Hafiane, Examination of ye'elimite formation mechanism, Journal of the European Ceramic Society, vol.39, issue.15, pp.5086-5095, 2019.

,

Y. El-khessaimi, Y. El, and A. Hafiane, SMITH Effect of fineness and citric acid addition on the hydration of ye'elimite Submitted to the journal of Construction and Building materials, 2019.

Y. El-khessaimi, . El, and A. Hafiane, SMITH Synthesis and hydration of ye'elimite Submitted as a reviewed proceeding for the American Ceramic Institute / RILEM international conference on cementitious materials and alternative binders for sustainable concrete to be held in, vol.2020

Y. El-khessaimi, . El, A. Hafiane, and . Smith,

M. Mouiya, A. Bouazizi, A. Abourriche, Y. El, A. Khessaimi et al., HANNACHE Effect of sintering temperature on the microstructure and mechanical behavior of porous ceramics made from clay and banana peel powder Results in Materials

, From Master project In international journals

N. El-khessaimi and A. Tessier-doyen, SMITH Effects of microstructure on acoustical insulation of gypsum boards, Journal of Building Engineering, vol.14, pp.24-31, 2017.

A. Smith, Y. El, Y. Hafiane, . El, and A. Khessaimi, FAURE Some examples of mineral eco-materials, Journal of the European Ceramic Society, vol.39, pp.3408-3415, 2019.

,

Y. El-khessaimi, A. Smith, Y. El, and . Hafiane, List of communications 16th European Ceramic Society Conference Sintering of ye, 2019.

Y. Symposium-plumee-;-elimite, A. El-khessaimi, Y. Smith, . El, and . Hafiane, Thermodynamic study of ye, Oral presentation Limoges, 2019.

Y. El-khessaimi, A. Smith, Y. El, and . Hafiane, Poster presentation Distinction: Best Poster Award Murten, pp.4-06, 2018.

, Chemical synthesis of ye'elimite Y. EL KHESSAIMI, A. SMITH, Y. EL HAFIANE Oral presentation Pessac, Journées, 2018.

A. El-khessaimi, Y. Smith, . El, and . Hafiane,

, CSA) sont commercialisés pour la préparation des bétons à compensation de retrait. De plus, les ciments CSA présentent des caractéristiques écologiques associées à leur production, notamment une réduction de l'empreinte CO2. Le comportement expansif des ciments CSA est principalement contrôlé par la quantité de la phase ettringite, cette dernière est produite lors de l'hydratation de la phase importante, Les ciments riches en ye'elimite ou les ciments sulfoalumineux

, Un autre aspect de ce travail vise à étudier l'influence de la finesse et de l'addition d'acide citrique sur la dissolution de la phase ye'elimite. Pour l'étude de l'effet de la finesse, une poudre fine et pure de ye'elimite a été synthétisée par des méthodes sol-gel, ces dernières méthodes de synthèse ont été développées d'une manière originale dans notre thèse. Plusieurs techniques expérimentales ont été réalisées pour mener à bien les différents aspects de la présente thèse, à savoir l'analyse quantitative par DRX (méthode Rietveld), l'analyse thermique (ATG, ATD, et dilatométrie), MEB (imagerie en rétrodiffusé et cartographie EDS), l'analyse BET, l'analyse granulométrique par diffraction laser, Cette thèse présente, d'une part, les conditions optimales pour la synthèse de la phase ye'elimite la plus pure possible par des réactions à l'état solide

, Mots-clés : ciment sulfoalumineux, dissolution, hydratation, analyse quantitative Rietveld, voie sol-gel, synthèse par réactions solides, ye'elimite A Synthesis and hydration of ye'elimite

, Ye'elimite-rich cements or calcium sulfoaluminate (CSA) cements are commercialized to prepare shrinkage compensation and self-stressing concretes. Moreover, CSA cements show environmentally friendly characteristics associated to their production, which include reduced CO2 footprint. The expansive behavior of CSA cements is mainly controlled by ettringite amount, produced upon hydration of the key-phase, ye'elimite [Ca4(Al6O12)SO4]. This work presents, on one hand, the optimal conditions for the synthesis highly pure ye'elimite by solid state reactions, and on the other hand, it shows a fundamental description of ye'elimite formation mechanisms. Another aspect of the study encompasses the influence of fineness and citric acid addition on ye'elimite phase dissolution, then on hydrates composition of lab made ye'elimite-rich cement. For the fineness effect study, a highly fine and pure ye'elimite was originally synthetized by sol-gel methods. Various experimental techniques were performed to conduct the different aspects of the present study, namely XRD-Quantitative Rietveld analysis, SEM (BSE imaging and EDS mapping)

, Keywords: calcium sulfoaluminate cements, dissolution, hydration, quantitative Rietveld analysis, sol-gel synthesis