www.concreteinternational.com | Ci | NOVEMBER 2019 33
12.7 25.4 38.1
Fig. 6: Chloride concentrations by mass of concrete, determined at
depths of 38.1, 25.4, and 12.7 mm from the exposed surface of test
cylinders. Chloride concentrations were obtained from the
calibration curve shown in Fig. 5 (Note: 1 mm = 0.04 in.)
Measured chlorides, % mass of concrete
The authors wish to acknowledge the financial support for this project
provided by the Province of Ontario and the Natural Science and
Engineering Research Council of Canada, the material support supplied
by CRH Canada, and colleagues and technicians at the University of
Waterloo who helped cast the 400 cylinders.
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