Etude du potentiel des écorces de tournesol et de maïs comme granulats végétaux dans la formulation de bétons légers

Abstract : ABSTRACT. Bio-aggregate based building materials offer promising perspectives thanks to their low environmental impact and interesting hygrothermal behaviour. As one of the high-potential agricultural resources, hemp has been extensively investigated for the last 15 years. This article aims to evaluate the potential of two other vegetal aggregates as a raw material to design bio-aggregate based concrete. Being locally available, the use of sunflower and maize bark particles could reduce transport and the associated carbon dioxide emissions. This study focuses on assessing the porous structure of bio-aggregates by X-ray tomography, their hygric sorption capacities (vapour and liquid water) as well as their chemical interactions with mineral binder and their effects on setting. The results underline the high transfer and storage capacities of these materials. Hence, the findings demonstrate that sunflower and maize bark particles are high-potential plant aggregates to design bio-aggregates based concrete.
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Méryl Lagouin, Camille Magniont, Pascale Senechal, Peter Moonen, Jean-Emmanuel Aubert. Etude du potentiel des écorces de tournesol et de maïs comme granulats végétaux dans la formulation de bétons légers. 36èmes Rencontres de l’AUGC, Jun 2018, Saint-Etienne, France. pp.30--34. ⟨hal-02116146⟩

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