Matériaux et Construction

, Volume 1, Issue 6, pp 553–559 | Cite as

Influence of water in areas of restricted adsorption on properties of concrete

  • R. H. Mills
Colloque RILEM Munich. 1–3 Avril 1968 Causes Physiques et Chimiques du Fluage et du Retrait du Béton

Summary

The paper serves to direct attention to the important role played by water in spaces where adsorption is restricted. Creep in saturated and drying specimens, drying shrinkage and swelling accompanying gain of moisture can be explained in terms of the movement of adsorbed water in and out of areas of restricted adsorption. Both creep and shrinkage involve closure of spaces of molecular dimensions in cement hydrate and the exclusion of water from such spaces. The molecular sieve effect affords a potentially useful tool for investigating change of structure in cement hydrate.

Keywords

Cement Paste Cement Hydrate Shaped Space Water Cement Ratio Hardened Cement 

Résumé

Ce rapport a pour but d'attirer l'attention sur le rôle important joué par l'eau dans les zones d'adsorption restreinte. Le fluage d'éprouvettes saturées et en cours de séchage, le retrait de séchage et le gonflement qui accompagne les gains d'humidité peuvent s'expliquer en termes de mouvement de l'eau adsorbée à l'intérieur et à l'extérieur des zones d'adsorption restreinte. Tant le fluage que le retrait impliquent l'occlusion d'espaces de dimension moléculaire dans le ciment hydraté et l'exclusion d'eau de ces espaces. L'effet de tamis moléculaire pourrait être un moyen efficace d'étude des modifications de structure du ciment hydraté.

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References

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Copyright information

© Secrétariat de Rédaction 1968

Authors and Affiliations

  • R. H. Mills
    • 1
  1. 1.Department of Civil EngineeringThe University of CalgaryAlbertaCanada

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