V. Etude, . De-l-'evolution, . Melanges, . Fonction, and . Temps, Eprouvettes conservées en milieu ambiant VI -2.l.l. Analyses par DRX VI -2.1.2. Analyses par DSC VI -2.1.3. Observations au MEB VI -2.104. Bilan VI -2.2. Eprouvettes conservées en milieu humide VI -2.2.1. Analyses par DRX VI -2

V. Vi-, Observations et analyses au MET VI -3.1.1. Morphologie VI -3.l.2. Composition du gel C-S-H VI -3.1.2.1. Composition du gel C-S-H à 28 jours VI -3.1.2.2. Variation de la composition du gel C-S-H en fonction du temps VI -3.1.3 . Composition de l'ettringite VI -3.l.4. Bilan MET VI -4. DISCUSSION VI -4.1 . Influence de l'eau VI -4.2. Attaque des aluminates de la cendre

P. C. Aïtcin and F. Autefage, Carles-Gibergues et A. Vaquier), 2 ème ICFSS, pp.91-114, 1986.

C. Andrieux and . Nord, Picardie Colloque International sur l'utilisation des sous-produits et déchets dans le génie civil, organisé par le LCPC et l'ENPC, Utilisation des cendres volantes en techniques routières, 1978.

T. Ban, K. Okada, and J. , Structure Refinement of Mullite by the Rietveld Method and a New Method for Estimation of Chemical Composition, Journal of the American Ceramic Society, vol.54, issue.9-10, pp.227-230, 1992.
DOI : 10.1107/S0365110X62000134

T. Ban, K. Okada, and J. , Analysis of Local Cation Arrangement in Mullite Using 29Si Magic-Angle Spinning Nuclear Magnetic Resonance Spectra, Journal of the American Ceramic Society, vol.18, issue.1, pp.2491-96, 1993.
DOI : 10.5940/jcrsj.27.23

[. Barret, D. Bertrandie, D. Beau, and C. , Calcium hydrocarboaluminate, carbonate, alumina gel and hydrated aluminates solubility diagram calculated in equilibrium with CO2g and with Naaq+ ions, Cement and Concrete Research, vol.13, issue.6, pp.789-800, 1983.
DOI : 10.1016/0008-8846(83)90080-7

J. A. Bender, J. K. Solem, G. J. Mccarthy, M. C. Oseto, and J. E. , Advances in X-Ray Analysis, pp.343-353, 1993.

R. [. Bentur and . Berger, Chemical Composition of C-S-H Gel Formed in the Hydration of Calcium Silicate Pastes, Journal of the American Ceramic Society, vol.33, issue.7, p.117, 1979.
DOI : 10.1021/ac60134a011

[. Bocquet and D. Toulouse, Caractérisation et valorisation des cendres volantes issue de la centrale thermique de Loire sur Rhône, 1994.

J. H. De-boer and B. C. Lippens, Thet-curve of multimolecular N2-adsorption, Journal of Colloid and Interface Science, vol.21, issue.4, p.405, 1966.
DOI : 10.1016/0095-8522(66)90006-7

[. Brunauer, P. H. Emeu, E. Teller, and J. , Adsorption of Gases in Multimolecular Layers, Journal of the American Chemical Society, vol.60, issue.2, p.309, 1938.
DOI : 10.1021/ja01269a023

[. M. Bushnell-watson and J. H. Sharp, The detection of the carboaluminate phase in hydrated high alumina cements by differential thermal analysis, Thermochimica Acta, vol.93, p.613, 1985.
DOI : 10.1016/0040-6031(85)85154-6

[. Caussin, J. Nusinovici, and D. W. Beard, Advances in X-ray Analysis, p.423, 1988.

M. Chloup-bondant, Thèse de l'université de Nancy 1, ''Etude des mécanismes réactionnels dans l'hydratation des silicates et aluminates tricalciques en présence d'un filler calcaire, 1996.

F. H. Chung and J. , Quantitative interpretation of X-ray diffraction patterns of mixtures. I. Matrix-flushing method for quantitative multicomponent analysis, Journal of Applied Crystallography, vol.7, issue.6, p.519, 1974.
DOI : 10.1107/S0021889874010375

M. Con-je-au-d and S. International, Aluminates de calcium

D. Damidot and F. P. Glasser, Thermodynamic investigation of the CaO???Al2O3???CaSO4???H2O system at 25??C and the influence of Na2O, Cement and Concrete Research, vol.23, issue.1, pp.221-238, 1993.
DOI : 10.1016/0008-8846(93)90153-Z

J. M. Daniels and A. Rosencwaig, M??ssbauer spectroscopy of stoichiometric and non-stoichiometric magnetite, Journal of Physics and Chemistry of Solids, vol.30, issue.6, pp.1561-71, 1969.
DOI : 10.1016/0022-3697(69)90217-0

S. Diamond, The Characterization of Fly Ashes, Symposium N. Annual MRS Meeting, pp.12-23, 1981.

S. Diamond, On the glass present in low-calcium and in high-calcium flyashes, Cement and Concrete Research, vol.13, issue.4, pp.459-464, 1983.
DOI : 10.1016/0008-8846(83)90002-9

S. Diamond and F. Lopez-fores, On the Distinction in Physical and Chemical Characteristics Between Lignitic and Bituminous Flyashes, Symposium N

R. H. Doremus, Treatise in Materials Science and Technology

E. Dowty, ATOMS for Windows. Version 3.1 Shape Software, 521 Hidden Valley Road, 1995.

M. J. Dudas and C. J. Warren, Submicroscopic Structure and Characteristics of Intermediate-Calcium Fly Ashes, MRS Proceedings, vol.48, pp.309-316, 1988.
DOI : 10.1002/jctb.5010100804

M. Evain, Programme Ufit V1, 1992.

R. F. Feldman and V. S. Ramachandran, Character of Hydration of 3CaO.Al2O3, Journal of the American Ceramic Society, vol.7, issue.76, p.268, 1966.
DOI : 10.1063/1.1735524

R. Fischer and H. Huzel, Reinvestigation of the system C4A.nH2O ??? C4A.Co2.nH2O, Cement and Concrete Research, vol.12, issue.4, p.517, 1982.
DOI : 10.1016/0008-8846(82)90066-7

G. Frohnsdorff and J. R. Clifton, Fly Ash in Cements and Concretes : Technical Needs and Opportunities, U.S . Dept Commerce. NBSIR, pp.81-2239, 1981.

F. G. Fumi and M. P. Tosi, Ionic sizes and born repulsive parameters in the NaCl-type alkali halides???I, Journal of Physics and Chemistry of Solids, vol.25, issue.1, pp.31-43, 1964.
DOI : 10.1016/0022-3697(64)90159-3

R. Gérardin, A. Bonazebi, E. Million, J. F. Brice, O. Evrard et al., Etude des magne??tites dope??esa`la chaux: Substitution du fer par le calcium en site te??trae??drique, Journal of Solid State Chemistry, vol.78, issue.1, pp.154-63, 1989.
DOI : 10.1016/0022-4596(89)90139-4

[. Grandet and J. P. Ollivier, Etude de la formation du monocarboaluminate de calcium hydrate au contact d'un granulat calcaire dans une pate de ciment portland, Cement and Concrete Research, vol.10, issue.6, pp.759-770, 1980.
DOI : 10.1016/0008-8846(80)90004-6

M. Grutzeck, A. Benesi, B. Fanning, and J. Am, Silicon-29 Magic Angle Spinning Nuclear Magnetic Resonance Study of Calcium Silicate Hydrates, Journal of the American Ceramic Society, vol.12, issue.3, pp.665-68, 1989.
DOI : 10.6028/jres.012.060

R. T. Hemmings and E. E. Berry, On the Glass in Coal Fly Ashes: Recent Advances, MRS Proceedings, vol.48, pp.3-38, 1987.
DOI : 10.1180/minmag.1984.048.347.09

R. T. Hemmings, B. Ed, G. J. Par, and F. Mccarthy, Fly Ash and Coal Conversion By-Products : Characterization, Utilization and DisposaI

F. H. Hubbard, R. K. Dhir, M. S. Ellis, and C. , Pulverized-fuel ash for concrete: Compositional characterisation of United Kingdom PFA, Cement and Concrete Research, vol.15, issue.1, p.185, 1985.
DOI : 10.1016/0008-8846(85)90025-0

L. D. Hulett and A. J. Weinberger, Some etching studies of the microstructure and composition of large aluminosilicate particles in fly ash from coal-burning power plants, Environmental Science & Technology, vol.14, issue.8, p.965, 1980.
DOI : 10.1021/es60168a013

B. Husson, T. De-doctorat, and I. Toulouse, Utilisation des cendres volantes à sulfites de calcium dans les bétons hydrauliques, 1991.

A. Jaymes, D. Douy, J. Massiot, and . Coutures, Evolution of the Si environment in mullite solid solution by 29Si MAS-NMR spectroscopy, Journal of Non-Crystalline Solids, vol.204, issue.2, pp.125-134, 1996.
DOI : 10.1016/S0022-3093(96)00414-0

H. M. Jennings, B. J. Dalgleish, and P. L. Pratt, Morphological Development of Hydrating Tricalcium Silicate as Examined by Electron Microscopy Techniques, Journal of the American Ceramic Society, vol.164, issue.3879, p.567, 1981.
DOI : 10.1016/0008-8846(71)90032-9

K. E. Johansson, T. Palm, and P. Werner, An automatic microdensitometer for X-ray powder diffraction photographs, Journal of Physics E: Scientific Instruments, vol.13, issue.12, p.1289, 1980.
DOI : 10.1088/0022-3735/13/12/015

F. J. Klug, S. Prochazka, and R. H. Doremus, Mullite and Mullite Matrix Composites

H. Kuzel, Thèse de l'université de Frankfurt, Beitrag zur Kristallchemie der Calciumaluminathydrate, 1969.

H. J. Kuzel and H. Pollmann, Hydration of C3A in the presence of Ca(OH)2, CaSO4??2H2O and CaCO3, Cement and Concrete Research, vol.21, issue.5, pp.885-95, 1991.
DOI : 10.1016/0008-8846(91)90183-I

J. Langmuir, THE ADSORPTION OF GASES ON PLANE SURFACES OF GLASS, MICA AND PLATINUM., Journal of the American Chemical Society, vol.40, issue.9, p.1361, 1918.
DOI : 10.1021/ja02242a004

M. F. Lea, The Chemistry of Pozzolans, 2 ème SCC, Stockholm (Suède), Ed. par Ingeniorsve-tenskapsakademien, pp.460-483, 1938.

M. F. Lea, The Chemistry of Cement and Concrete

S. Lecuyer, P. Bicocchi, R. Ausset, and . Lefevre, Physico-Chemical Characterization and Leaching of Desulphurization Coal Fly Ash, Waste Management & Research, vol.14, issue.1, pp.15-28, 1996.
DOI : 10.1021/es60135a006

P. Longuet, B. Thuret, and S. International, Aluminates de calcium Turin (Italie), pp.241-259, 1982.

W. Manns and K. Wesche, Tokyo (Japon), Ed. par Cement Association of Japan, ème ISCC (4 volumes), p.385, 1969.

[. F. Mcmillan, Application of NMR Spectroscopy to Cement Science, p.104, 1994.

M. Murat and S. International, Aluminates de calcium, Turin (Italie), pp.59-64, 1982.

A. Negro and C. Bachiorrini, Expansion associated with ettringite formation at different temperatures, Cement and Concrete Research, vol.12, issue.6, p.677, 1982.
DOI : 10.1016/0008-8846(82)90030-8

[. G. Newberry, D. R. Peacor, E. J. Essene, and J. W. Geissman, Silicon in magnetite: High resolution microanalysis of magnetite-ilmenite intergrowths, Contributions to Mineralogy and Petrology, vol.61, issue.4, pp.334-340, 1982.
DOI : 10.1007/BF00378006

J. P. Ollivier, J. C. Maso, and S. International, Aluminates de calcium, Turin (Italie), pp.210-228, 1982.

. [. Paul, Chemistry of glasses, p.pp, 1982.
DOI : 10.1007/978-94-009-5918-7

[. Pietersen and A. L. , Reactivity of Fly Ash At High pH, MRS Proceedings, vol.113, pp.139-157, 1990.
DOI : 10.1016/0016-7061(87)90016-4

[. Popovics and B. Greta, X-ray and neutron structure analysis in material science, Ed. par J. Hasek, pp.29-41, 1989.

J. C. Qian, E. E. Lachowski, and J. P. Glasser, Microstructure and Chemical Variation in Class F Fly Ash Glass, MRS Proceedings, vol.65, pp.45-53, 1988.
DOI : 10.1111/j.1151-2916.1962.tb11133.x

J. C. Qian, E. E. Lachowski, and J. P. Glasser, The Microstructure of National Bureau of Standards Reference Fly Ashes, MRS Proceedings, vol.113, pp.77-85, 1989.
DOI : 10.1111/j.1151-2916.1978.tb09232.x

S. A. Rodger and G. W. Groves, Advances in Cement Research, pp.84-91, 1988.

B. E. Scheetz, D. W. Strickler, M. W. Grutzeck, and D. M. Roy, Physical and Chemical Behavior of Selectively Etched Fly Ashes, Symposium N-MRS Meeting, pp.24-33, 1981.

H. Schneider, L. Merwin, and A. Sebald, Mullite formation from non-crystalline precursors, Journal of Materials Science, vol.71, issue.3, p.805, 1992.
DOI : 10.1007/BF02403900

L. Schropfer, Zeitschrift für anorganische und allgemeine Chemie, pp.1-120, 1973.

F. A. Shebl, F. M. Helmy, U. Ludwig, and C. , A new approach on the hydration mechanism of tricalcium silicate, Cement and Concrete Research, vol.15, issue.5, p.747, 1985.
DOI : 10.1016/0008-8846(85)90139-5

G. M. Sheldrick, Pro gram for the Refinement of Crystal Structure, 1997.

B. L. Sherrif and H. D. Grundy, Calculations of 29Si MAS NMR chemical shift from silicate mineral structure, Nature, vol.15, issue.6167, pp.819-841, 1998.
DOI : 10.1107/S0365110X64003498

R. C. Slade and T. W. Davies, Evolution of structural changes during flash calcination of kaolinite. A 29Si and 27Al nuclear magnetic resonance spectroscopy study, Journal of Materials Chemistry, vol.1, issue.3, pp.361-365, 1991.
DOI : 10.1039/jm9910100361

K. Suzuki, T. Nishikawa, S. Ito, and C. , Formation and carbonation of C-S-H in water, Cement and Concrete Research, vol.15, issue.2, p.213, 1985.
DOI : 10.1016/0008-8846(85)90032-8

H. F. Taylor, K. Mohan, and G. K. Moir, Analytical Study of Pure and Extended Portland Cement Pastes: I, Pure Portland Cement Pastes, Journal of the American Ceramic Society, vol.67, issue.4, pp.680-85, 1985.
DOI : 10.1016/0008-8846(85)90019-5

H. F. Taylor and A. B. Turner, Reactions of tricalcium silicate paste with organic liquids, Cement and Concrete Research, vol.17, issue.4, p.613, 1987.
DOI : 10.1016/0008-8846(87)90134-7

S. H. Taylor, Cement chemistry, pp.384-96, 1992.
DOI : 10.1680/cc.25929

A. Thedchanamoorthy and G. J. Mccarthy, Advances in X-Ray Analysis, pp.569-75, 1989.

M. Venuat, Adjuvants et traitements, pp.240-251, 1984.

W. Vogel, Chemistry of Glasses, Ed. par N. Kreidl, 1985.

J. D. Watt and D. J. Thome, Composition and pozzolanic properties of pulverised fuel ashes. I. Composition of fly ashes from some British power stations and properties of their component particles, Journal of Applied Chemistry, vol.17, issue.12, p.585, 1965.
DOI : 10.1002/jctb.5010100804

A. Xu and S. L. Sarkar, Hydration And Properties of Fly Ash Concrete, pp.175-225, 1993.