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GET - Geosciences -Environnement- Toulouse |  |
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GET - Geosciences -Environnement- Toulouse | |
| HAL : hal-00428838, version 1 |
| Fiche détaillée |  Récupérer au format |
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| Applied Clay Science 43, 3-4 (2009) pp 322-330 |
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| Clay content of argillites : Influence on cement based mortars |
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| Guillaume Habert 1Nathalie Choupay 2 |
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| (01/03/2009) |
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| The pozzolanic activity of four heated powders containing different clays has been tested. Mineral transformations during calcination from 20 to 900 °C have been followed by X-ray diffraction (XRD) and Differential Scanning Calorimetry (DSC). Compressive strength tests were performed at 1, 7 and 28 days on cement-clay mortars using 30% of pozzolanic material as a replacement by mass for cement. Calcination temperatures corresponded to the stages of potentially high reactivity identified by XRD. Results indicated that there exists incompatibility between clay minerals which can not be activated at the same temperatures. Products of recrystallisation of the earlier activated clay were already formed when the second clay type was activated. Concerning the type and the abundance of clay minerals in the raw material, this study evidences that the compressive strength is, at first approximation, correlated with the percentage of activated clay and less with the nature of the clay assemblage. |
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| 1 : | Division Bétons et Composites cimentaires (LCPC/BCC) |
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LCPC – Université Paris-Est Créteil Val-de-Marne (UPEC) |
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| 2 : | Lafarge Centre de Recherche |
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| 3 : | Laboratoire Matériaux et Durabilité des constructions (LMDC) |
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Institut National des Sciences Appliquées (INSA) - Toulouse – Université Paul Sabatier [UPS] - Toulouse III |
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| 4 : | Laboratoire des Mécanismes et Transfert en Géologie (LMTG) |
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CNRS : UMR5563 – Observatoire Midi-Pyrénées – Université Paul Sabatier [UPS] - Toulouse III – Institut de recherche pour le développement [IRD] : UMR154 |
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| Domaine | : | Sciences de l'ingénieur/Matériaux |
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| ARGILE – CIMENT – MORTIER – RESISTANCE A LA COMPRESSION – ESSAI EN LABORATOIRE |
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| hal-00428838, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00428838 | |
| oai:hal.archives-ouvertes.fr:hal-00428838 | |
| Contributeur : Ifsttar Cadic | |
| Déposé pour le compte de : | |
| Soumis le : Jeudi 29 Octobre 2009, 16:22:35 | |
| Dernière modification le : Jeudi 29 Octobre 2009, 16:22:35 | |
