Nathalie Coreau

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The behaviour of three organic ligands in suspensions of fresh and degraded hydrated ordinary Portland cement pastes (HCP) has been investigated. EDTA arises as a decontamination product whilst ISA (isosaccharinic acid) is a main degradation product of cellulose. GLU (gluconic acid) is used as a retarding organic admixture in concrete. The affinity of EDTA,(More)
Hydrated cement pastes (HCP) have a high affinity with a lot of (radio)toxic products and can be used as waste confining materials. In cementitious media, elements are removed from solution via (co)precipitation reactions or via sorption/diffusion mechanisms as surface complexation equilibria. In this study, to improve the knowledge of the surface charge(More)
The uptake of Eu by calcium silicate hydrate (C-S-H) phases as a function of Eu/sorbate ratio (from 37 to 450 micromol g(-1) C-S-H), C-S-H Ca/Si mole ratio (1.3, 1.0, and 0.7), and initial supersaturating conditions was probed by solution kinetics experiments and extended X-ray absorption fine structure (EXAFS) spectroscopy, to shed light on the retention(More)
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