Development of pore structure, moisture sorption and transport properties in fly ash blended cement-based materials

Research output: Contribution to journalArticle


This study documents how the pore structure develops with time in cement-based materials with varying fly ash replacement. Heat production was measured during the first days, water vapour desorption isotherms were determined at different times up to 18 months, and moisture transport properties were measured after one year. Long-term fly ash reactions alter the pore structure considerably. The fly ash does not fill pore volume but refines porosity. After one year, fly ash replacement resulted in a factor 2–5 lower moisture diffusion coefficients. Aggregates have little effect on the measured pore structure; sorption isotherms for mortar and concrete can be determined on cement paste.


Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Materials Engineering


  • Durability, Moisture transport, Permeability, Pore structure, SCM, Sorption
Original languageEnglish
Article number120007
JournalConstruction and Building Materials
Publication statusPublished - 2020
Publication categoryResearch

Related research output

Oskar Linderoth, 2020 Sep 1, Lund: Department of Building and Environmental Technology, Lund University. 80 p.

Research output: ThesisDoctoral Thesis (compilation)

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Related projects

Oskar Linderoth, Lars Wadsö, Peter Johansson & Katja Fridh


Project: DissertationIndividual research project

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