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Accélération de ciment au laitier par du ciment sulfo-alumineux

Accélération de ciment au laitier par du ciment sulfo-alumineux

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SOMMAIRE<br />

SOMMAIRE<br />

SOMMAIRE ..................................................................................................................................................................... 7<br />

LISTE DES FIGURES ................................................................................................................................................... 11<br />

LISTE DES TABLEAUX ............................................................................................................................................... 17<br />

INTRODUCTION GENERALE ................................................................................................................................... 19<br />

CHAPITRE I ETUDE BIBLIOGRAPHIQUE ............................................................................................................ 21<br />

1 Intro<strong>du</strong>ction ........................................................................................................................................................... 23<br />

2 Le <strong>laitier</strong> <strong>de</strong> h<strong>au</strong>t-fourne<strong>au</strong>................................................................................................................................... 23<br />

2.1 Influence <strong>du</strong> mo<strong>de</strong> <strong>de</strong> refroidissement sur la nature <strong>du</strong> <strong>laitier</strong> ...................................................................... 25<br />

2.1.1 Refroidissement lent : <strong>laitier</strong> <strong>de</strong> h<strong>au</strong>t-fourne<strong>au</strong> cristallisé ......................................................................... 25<br />

2.1.2 Refroidissement rapi<strong>de</strong> : <strong>laitier</strong> <strong>de</strong> h<strong>au</strong>t-fourne<strong>au</strong> vitrifié .......................................................................... 26<br />

2.2 Influence <strong>du</strong> mo<strong>de</strong> <strong>de</strong> fabrication <strong>de</strong> l’acier sur la composition chimique <strong>du</strong> <strong>laitier</strong> .................................... 28<br />

2.3 Hydratation <strong>de</strong>s <strong>laitier</strong>s vitrifiés .................................................................................................................... 31<br />

2.3.1 Processus d’hydratation ............................................................................................................................ 31<br />

2.3.2 Evaluation <strong>de</strong> l’hydr<strong>au</strong>licité ...................................................................................................................... 33<br />

2.3.3 Coloration ................................................................................................................................................. 37<br />

2.4 Activation <strong>de</strong>s <strong>laitier</strong>s vitrifiés ....................................................................................................................... 38<br />

2.4.1 Activation alcaline .................................................................................................................................... 39<br />

2.4.2 Activation sulfatique ................................................................................................................................. 53<br />

2.4.3 Activations conjointes sodo-sulfatique et calcio-sulfatique ...................................................................... 53<br />

2.4.4 Activation <strong>par</strong> <strong>du</strong> <strong>ciment</strong> Portland ............................................................................................................ 57<br />

2.5 Bilan sur l’activation <strong>de</strong>s <strong>laitier</strong>s .................................................................................................................. 66<br />

3 Le <strong>ciment</strong> <strong>sulfo</strong><strong>alumineux</strong> ..................................................................................................................................... 66<br />

3.1 Fabrication <strong>du</strong> clinker <strong>sulfo</strong><strong>alumineux</strong> .......................................................................................................... 67<br />

3.1.1 Etapes <strong>de</strong> fabrication ................................................................................................................................. 67<br />

3.1.2 Ré<strong>du</strong>ction d'énergie ................................................................................................................................... 68<br />

3.2 Hydratation <strong>du</strong> <strong>ciment</strong> <strong>sulfo</strong><strong>alumineux</strong> .......................................................................................................... 69<br />

3.2.1 Equations d'hydratation d’un <strong>ciment</strong> <strong>sulfo</strong><strong>alumineux</strong> [ 42 ] ...................................................................... 69<br />

3.2.2 Etapes d'hydratation d'un <strong>ciment</strong> <strong>sulfo</strong><strong>alumineux</strong> ..................................................................................... 71<br />

3.2.3 Hydratation <strong>de</strong>s <strong>ciment</strong>s <strong>de</strong> type K ........................................................................................................... 73<br />

3.3 Utilisation <strong>de</strong>s <strong>ciment</strong>s <strong>sulfo</strong><strong>alumineux</strong> ......................................................................................................... 74<br />

4 Conclusion .............................................................................................................................................................. 77<br />

7

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