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Réalisation d'éco-ciments par la valorisation de cendres volantes de charbon non conventionnelles issues de centrales thermiques Spreader Stoker

Abstract : The main objective of this project was to evaluate the potential of coal fly ash from Spreader Stoker thermal power plants (Spreader Stoker Coal Fly Ash) in the manufacture of eco-cements in Reunion Island. We first performed a physico-chemical characterization SSCFA and verified its reactivity. Two valorisation paths were chosen, one of which did not present any added value but which permit to value a large quantity of SSCFA by stabilization in cement-based matrices, the other which offers added value to SSCFA by incorporating it in the manufacture of composed cements. Leachate release was studied for the first path of valorisation, and then the effects of SSCFA in the cement matrices, especially the unburned particles contained in SSFCA, were evaluated in fresh, hardening and hardened states, followed by a small numerical exploitation of the experimental data. Finally, a sustainability study on concretes based on laboratory cements was made using a comparative approach with natural pozzolana, which is currently used for the manufacture of composite cements in Réunion Island.
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Submitted on : Monday, April 9, 2018 - 10:25:08 AM
Last modification on : Saturday, August 15, 2020 - 3:53:50 AM

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2016TOU30354b.pdf
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  • HAL Id : tel-01761414, version 1

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Moustapha Sow. Réalisation d'éco-ciments par la valorisation de cendres volantes de charbon non conventionnelles issues de centrales thermiques Spreader Stoker. Matériaux composites et construction. Université Paul Sabatier - Toulouse III, 2016. Français. ⟨NNT : 2016TOU30354⟩. ⟨tel-01761414⟩

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