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Matériaux et Construction

, Volume 1, Issue 6, pp 535–546 | Cite as

Water in hardened cement paste

  • G. Englert
  • F. Wittmann
Colloque RILEM Munich. 1–3 Avril 1968 Causes Physiques et Chimiques du Fluage et du Retrait du Béton

Summary

Some properties of adsorbed water in hardened cement paste and in the three completely hydrated main constituents of portland cement have been examined by means of differential thermoanalysis, thermo-gravimetry and nuclear magnetic resonance. When a dried specimen is re-wetted, the adsorbed water first contributes to the build-up of a mono-layer. Only in the higher humidity range is the sorbed water partly bound as inter-layer hydrate water and as hydrate water. According to the first results of the nuclear magnetic resonance measurements the water adsorbed in the monolayer behaves like a two-dimensiional Van-der-Waals-gas.

Keywords

Pore Water Ettringite Calcium Silicate Hydrate Hydrate Water Interlayer Water 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Résumé

Quelques propriétés de l'eau adsorbée dans la pâte de ciment durcie et dans les trois constituants principaux complètement hydratés du ciment Portland ont été étudiées avec l'analyse thermique différentielle, la thermo-gravimétrie et la résonance magnétique nucléaire. Lorsqu'une éprouvette séchée est réhumidifiée, l'eau adsorbée contribe d'abord à la formation d'une mono-couche. L'eau adsorbée, en tant qu'eau d'hydratation, n'est partiellement liée dans la structure du sel que pour les humidités les plus élevées. Selon les tout premiers résultats fournis par les mesures de la résonance magnétique nucléaire, l'eau adsorbée dans la mono-couche se comporte comme un gaz bi-dimensionnel de Van-der-Waals.

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Copyright information

© Secrétariat de Rédaction 1968

Authors and Affiliations

  • G. Englert
    • 1
  • F. Wittmann
    • 1
  1. 1.Physics Laboratory of the Materialprüfungsamt für das BauwesenTechnical UniversityMunichR.F.A.

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