HYDRATION OF PORTLAND CEMENT AND SURFACE AREA OF HARDENED CEMENT PASTE BY WATER VAPOR ADSORPTION MEASUREMENT

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  • MARUYAMA Ippei
    Assoc. Prof., Graduate School of Environmental Studies, Nagoya Univ., Dr. Eng.
  • IGARASHI Go
    Graduate student, Graduate School of Environmental Studies, Nagoya Univ.

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  • ポルトランドセメントの水和反応と水蒸気吸着試験による硬化体の比表面積
  • ポルトランドセメント ノ スイワ ハンノウ ト スイジョウキ キュウチャク シケン ニ ヨル コウカタイ ノ ヒ ヒョウメンセキ

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Abstract

Relationship between surface area of hardened cement and cement hydration was evaluated. Hydration process was evaluated by powder X-ray diffraction/Rietveld analysis, on the other hand, surface area of hardened cement paste is determined by water vapor adsorption isotherm and BET theory. Based on the experimental data, the surface area of hardened cement paste has strong correlation with the amount of C-S-H in hardened cement. The surface area by vapor adsorption is very sensitive to the sample preparation and therefore, correlation between surface and amount of C-S-H is different when the pre-drying condition is differed.

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