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Phosphonated superplasticizers synthesis: adsorption, dispersion and fluidification ability on calcium carbonate suspensions.

Archive ouverte : Article de revue

Tramaux, A. | Azema, N. | David, G. | Negrell, C. | Poulesquen, A. | Haas, J. | Remond, S.

Edité par HAL CCSD ; EDP Sciences

International audience. Superplasticizers are chemical admixtures used to fluidize cement pastes. Among them, polycarboxylate are comb-like copolymers with carboxylic acid and poly(ethylene glycol) side chains. We present here the synthesis of various polycarboxylate-like copolymers including phosphonic acid functions. Their adsorption, dispersion and fluidification efficiencies are evaluated on calcium carbonate suspensions, a mineral material commonly used to simulate early-age cement behaviour.

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