Polymerization effects in C-S-H: Implications for Portland cement hydration

D. E. Macphee; E. E. Lachowski; F. P. Glasser

doi:10.1680/1988.1.3.131

Polymerization effects in C-S-H: Implications for Portland cement hydration

D. E. Macphee, E. E. Lachowski, F. P. Glasser

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Abstract

²⁹Si NMR has been applied to the study of calcium silicate hydrate (C-S-H) gels. The degree of silicate polymerization in young gels is found to be sensitive to the curing humidity; higher degrees of polymerization are observed for gels cured in drier environments. Compositional effects on polymerization have been investigated and found to be insignificant at CaO/SiO₂ ratios greater than about 1.2. At lower lime contents, the predominant silicate species are long chain polymers. The results of the studies on synthetic C-S-H are discussed in relation to the hydration of Ca₃SiO₅ and historical cement specimens.

Original language	English
Pages (from-to)	131-137
Number of pages	7
Journal	Advances in Cement Research
Volume	1
Issue number	3
DOIs	https://doi.org/10.1680/1988.1.3.131
Publication status	Published - 1 Jul 1988

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10.1680/1988.1.3.131

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title = "Polymerization effects in C-S-H: Implications for Portland cement hydration",

abstract = "29Si NMR has been applied to the study of calcium silicate hydrate (C-S-H) gels. The degree of silicate polymerization in young gels is found to be sensitive to the curing humidity; higher degrees of polymerization are observed for gels cured in drier environments. Compositional effects on polymerization have been investigated and found to be insignificant at CaO/SiO2 ratios greater than about 1.2. At lower lime contents, the predominant silicate species are long chain polymers. The results of the studies on synthetic C-S-H are discussed in relation to the hydration of Ca3SiO5 and historical cement specimens.",

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T2 - Implications for Portland cement hydration

AU - Macphee, D. E.

AU - Lachowski, E. E.

AU - Glasser, F. P.

PY - 1988/7/1

Y1 - 1988/7/1

N2 - 29Si NMR has been applied to the study of calcium silicate hydrate (C-S-H) gels. The degree of silicate polymerization in young gels is found to be sensitive to the curing humidity; higher degrees of polymerization are observed for gels cured in drier environments. Compositional effects on polymerization have been investigated and found to be insignificant at CaO/SiO2 ratios greater than about 1.2. At lower lime contents, the predominant silicate species are long chain polymers. The results of the studies on synthetic C-S-H are discussed in relation to the hydration of Ca3SiO5 and historical cement specimens.

AB - 29Si NMR has been applied to the study of calcium silicate hydrate (C-S-H) gels. The degree of silicate polymerization in young gels is found to be sensitive to the curing humidity; higher degrees of polymerization are observed for gels cured in drier environments. Compositional effects on polymerization have been investigated and found to be insignificant at CaO/SiO2 ratios greater than about 1.2. At lower lime contents, the predominant silicate species are long chain polymers. The results of the studies on synthetic C-S-H are discussed in relation to the hydration of Ca3SiO5 and historical cement specimens.

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DO - 10.1680/1988.1.3.131

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EP - 137

JO - Advances in Cement Research

JF - Advances in Cement Research

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ER -

Polymerization effects in C-S-H: Implications for Portland cement hydration

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