Title:
Rapid Chloride Ion Permeability Test: Data on Concretes Incorporating Supplementary Cementing Materials
Author(s):
P. Plante and A. Bildeau
Publication:
Symposium Paper
Volume:
114
Issue:
Appears on pages(s):
625-644
Keywords:
chlorides; concretes; fineness; fly ash; permeability; porosity; silica fume; slags; tests; Materials Research
DOI:
10.14359/2197
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.