Chloride binding in GGBS concrete

This paper reports the results of chloride binding measurements of GGBS pastes, as well as chloride diffusion and permeability measurements of GGBS concrete mixes. Chloride binding capacity was found to increase with increasing GGBS replacement levels and the chloride exposure concentration. Thermal...

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Bibliographic Details
Published inCement and concrete research Vol. 26; no. 12; pp. 1767 - 1773
Main Authors Dhir, R.K., El-Mohr, M.A.K., Dyer, T.D.
Format Journal Article
LanguageEnglish
Published New York, NY Elsevier Ltd 01.12.1996
Elsevier Science
Subjects
Applied sciences
Buildings. Public works
Concrete making (water addition, mixing). Ready mixed concrete
Concretes. Mortars. Grouts
Exact sciences and technology
Materials
Concrete mix design
Permeability
Experimental study
Binders
Portland cement
Chlorides
Cement paste
Concrete
Thermal analysis
Diffusion
Granulated slag
Blast furnace slag
Strength
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Summary:This paper reports the results of chloride binding measurements of GGBS pastes, as well as chloride diffusion and permeability measurements of GGBS concrete mixes. Chloride binding capacity was found to increase with increasing GGBS replacement levels and the chloride exposure concentration. Thermal analysis measurements suggest that much of the improvement in chloride binding is a result of high aluminate levels in GGBS leading to the production of higher quantities of Friedel's salt. When concrete mixes with relatively similar permeabilities are used the chloride binding capacity of the cement matrix becomes a major determining factor in how resistant the concrete is to Chloride permeation.
ISSN:0008-8846
1873-3948
DOI:10.1016/S0008-8846(96)00180-9