The influence of temperature in a capillary imbibition salt weathering simulation test on Mokattam limestone

N. Aly, M. Gomez-Heras, A. Hamed, M. Álvarez De Buergo, F. Soliman

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19 Scopus citations

Abstract

Limestone is one of the most frequent building stones used in monuments in Egypt from ancient Egyptian times and salt weathering is one of the main threats to these monuments. During this work, cylindrical limestone samples (2 cm diameter and approx. 4 cm length) from Mokattam group, one of the most frequent materials in historic Cairo, were subjected, in a purpose-made simulation chamber, to laboratory salt weathering tests with a 10% weight NaCl solution at different temperatures (20, 30, 40 °C). During each test, temperature was kept constant and salt solutions flowed continuously imbibing samples by capillary rise resembling the way they get into building stone in many real cases. Air temperature, relative humidity inside the simulation chamber and also samples weight were digitally monitored and recorded. Results show the influence of temperature and the ratio between imbibitions and evaporation on the dynamics of salt crystallization in the samples.

Original languageEnglish
Pages (from-to)e044
JournalMateriales de Construccion
Volume65
Issue number317
DOIs
StatePublished - 1 Jan 2015

Bibliographical note

Publisher Copyright:
© 2015 CSIC.

Keywords

  • Durability
  • Limestone
  • Salt weathering
  • Stone decay

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