Rapid Chloride Ion Permeability Test: Data on Concretes Incorporating Supplementary Cementing Materials

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Title: Rapid Chloride Ion Permeability Test: Data on Concretes Incorporating Supplementary Cementing Materials

Author(s): P. Plante and A. Bildeau

Publication: Special Publication

Volume: 114

Issue:

Appears on pages(s): 625-644

Keywords: chlorides; concretes; fineness; fly ash; permeability; porosity; silica fume; slags; tests; Materials Research

Date: 5/1/1989

Abstract:
Gives results of an investigation on the chloride ion permeability of concretes incorporating supplementary cementing materials, using the Rapid Determination of Chloride Permeability Test (AASHTO T277-83). A total of 18 concrete mixtures were made. These included mixtures incorporating silica fume (8 percent replacement or addition to the cement by mass) or ground granulated blast-furnace slags (50 percent replacement by mass), or fly ash (25 percent replacement by mass). The w/c of the mixtures investigated ranged from 0.21 to 0.71. From each mixture, a number of 152 x 305 mm cylinders for compressive strength testing and 102 x 203 mm cylinders for determining the chloride permeability were made. Porosity measurements were also performed on some of the concrete specimens. The test results showed that the use of supplementary cementing materials significantly reduced the chloride ion permeability of concrete. Silica fume and blast furnace slags investigated seem to be particularly efficient for producing concrete almost impermeable to chloride ions.