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Correlation between pore structure and low-temperature dilatation of hydrated cement pastes and mortars

Effect of cement type

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Abstract

The pore structure and low-temperature dilataion behaviour of a traditional hydrated Portland cement paste and a special cement paste of high initial strength were investigated.

The aim of the investigation was to demonstrate the role of the cement type in developing the pore structure and frost dilatation during the hydration process. The lower porosity and the higher strength of the special hydrated cement paste resulted in smaller frost dilatation effects in comparison with those of the traditional cement paste in the early stage of hydration.

Zusammenfassung

An einem herkömmlich hydratierten Portland Zementleim und einem Spezialzementleim mit hoher Anfangsfestigkeit wurde die Porenstruktur und das Dilatationsverhalten bei niedrigen Temperaturen untersucht. Mit dieser Untersuchung sollte gezeigt werden, welche Rolle die Zementart wÄhrend des Hydratationsprozesses bei der Ausbildung der Porenstruktur und der Ausdehnung bei Frost spielt. Die geringere PorösitÄt und höhere Festigkeit des speziell hydratierten Zementleimes ergaben bezogen auf herkömmlichen Zementleim im frühen Stadium der Hydratation geringere Dilatationseffekte bei Frost.

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Authors and Affiliations

  1. Central Research and Design Institute for Silicate Industry, PF. 112, H-1300, Budapest, Hungary

    Zs. E. Wagner

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  1. Zs. E. Wagner
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Additional information

The author is grateful to Dr. Ludmilla Opoczky and Mr. Imre Horváth for the samples.

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Wagner, Z.E. Correlation between pore structure and low-temperature dilatation of hydrated cement pastes and mortars. Journal of Thermal Analysis 37, 1053–1064 (1991). https://doi.org/10.1007/BF01932802

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  • DOI: https://doi.org/10.1007/BF01932802

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