C3S hydration in diluted and stirred suspension: (II) Properties of C-S-H precipitated during the two kinetic steps

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作者
Damidot, D. [1 ]
Nonat, A. [1 ]
机构
[1] Universite de Bourgogne, Dijon, France
关键词
Carbon inorganic compounds - Film growth - Hydration - Lime - Mixtures - Phase transitions - Precipitation (chemical) - Reaction kinetics - Solutions - Sulfur compounds - Suspensions (fluids);
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摘要
The properties of C-S-H formed during the two kinetic steps have been investigated by hydrating mixtures of C3S and C-S-H, in water or saturated lime solutions. C-S-H precipitated during the two kinetic steps (C-S-H(SI) and C-S-H(SII)) have different properties concerning the nucleation rate and the formation of a protective layer around C3S grains. C-S-H(SI) is able to transform into C-S-H(SII) by increasing its C/S ratio when the lime concentration becomes higher than 20 mmol/l. Thus, C-S-H(SI) and C-S-H(SII) may correspond to two different types of C-S-H.
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页码:83 / 91
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