Inkbottle Pore-Method: Prediction of hygroscopic water content in hardened cement paste at variable climatic conditions

Rosa Maria Espinosa, Lutz Franke

Research output: Contribution to journalArticlepeer-review

Abstract

The aim of this work is the development of a practicable method for the reliable prediction of the equilibrium hygroscopic water content in hardened cement paste and cement mortars at changing climatic conditions. Sorption thermodynamics and multi-scale pore structure of hardened cement paste build the basis of the new computation procedure. Drying and chemical aging lead to a formation of inkbottle pores. Their influence on sorption behaviour will be considered in particular by including them into the pore model. Experimental data of adsorption, desorption and scanning-isotherms verify the new computation method, which has been called "IBP-Method" (inkbottle pores).

Original languageEnglish (US)
Pages (from-to)1954-1968
Number of pages15
JournalCement and Concrete Research
Volume36
Issue number10
DOIs
StatePublished - Oct 2006
Externally publishedYes

Keywords

  • Adsorption
  • Change of pore structure
  • Desorption
  • Hysteresis
  • Inkbottle pores
  • Scanning-isotherms

ASJC Scopus subject areas

  • Building and Construction
  • Materials Science(all)

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