Evidence for anomalous water vapor sorption kinetics in cement based materials

Research output: Contribution to journalArticle

Abstract

We used dynamic sorption balance measurements to evaluate the diffusivity for cement pastes with three different binders (OPC, OPC + 70% slag, OPC + 10% silica fume). The diffusion of water vapor in cement based materials is normally assumed to follow Fick's law of diffusion, but our results clearly show that Ficles law cannot completely describe the sorption process in our materials. In this paper we report the evidence for this anomalous sorption behavior and discuss a possible method to evaluate diffusivities from such measurements. (C) 2015 Elsevier Ltd. All rights reserved.

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Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Materials Engineering

Keywords

  • Cement pastes, Transport properties, Diffusion, Anomalous sorption
Original languageEnglish
Pages (from-to)60-66
JournalCement and Concrete Research
Volume70
Publication statusPublished - 2015
Publication categoryResearch
Peer-reviewedYes