The diffusion of Cl-ions through portland cement and portland cement-polymer pastes

H. Diab*, A. Bentur, C. Heitner-Wirguin, L. Ben-Dor

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

The diffusion of Cl-ions through cement pastes and mortars with and without polymers was studied. The diffusion in the portland cement paste matrix of the mortar was greater than that of the diffusion in the paste of similar w/c ratio. This could be accounted for by the higher porosity of the paste matrix in the mortar. Addition of vinylsulfonic polymer to the cement resulted in a reduction of the Cl-diffusion coefficient by more than one order of magnitude. This reduction could not be correlated with changes in porosity or pore size distribution and is believed to be the result of chemical effects of the polymer on the diffusion process.

Original languageEnglish
Pages (from-to)715-722
Number of pages8
JournalCement and Concrete Research
Volume18
Issue number5
DOIs
StatePublished - Sep 1988

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