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- W2891982152 abstract "Polymer latexes are often found to retard cement hydration. Interaction of polymer particles with Ca2+ in pore solution and adsorption of polymer on cement were proposed as possible mechanisms for the retardation effect. This paper aims at disclosing the retardation mechanism of colloidal polymers using a highly carboxylated polystyrene latex. Interaction between colloidal particles and Ca2+ was studied by post-treatment of the latex with Ca(NO3)2. Techniques including calorimetry, adsorption test, ICP-OES, SEM, are involved to investigate effects of the post-treated latexes on hydrations of cement and C3S. It is found that enrichment of Ca2+ on surface of colloidal particles doesn't contribute to the retardation effect of polymer on cement hydration. Furthermore, the acceleration effect of the two-step treated latex using Ca(NO3)2 and Na2SiO3 suggests that nucleation inhibition of the adsorbed polymer layer on cement surface is the more conceivable mechanism responsible for the retardation effect of the highly carboxylated latex." @default.
- W2891982152 created "2018-09-27" @default.
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- W2891982152 date "2018-11-01" @default.
- W2891982152 modified "2023-10-01" @default.
- W2891982152 title "Effect of highly carboxylated colloidal polymers on cement hydration and interactions with calcium ions" @default.
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- W2891982152 doi "https://doi.org/10.1016/j.cemconres.2018.08.010" @default.
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