Deicer Scaling Resistance of Concrete Mixtures Containing Slag Cement

Project Status

Completed

Start Date: 04/15/2010
End Date: 03/31/2014

Researcher(s)

Principal Investigator(s)

Sponsor(s)/Partner(s)

  • Federal Highway Administration Transportation Pooled Fund

Publications

About the Research

Concern has been expressed about the deicer scaling resistance of concrete containing slag, especially when the dosage of slag exceeds 50% of the total cementitious material in the mixture. Much of the concern appears to be based on the results of laboratory scaling tests based on ASTM C 672, despite indications that such mixtures often perform well in the field.

The initial phase of this study showed that construction-related issues played a bigger role in the observed scaling performance than did the amount of slag in the concrete mixture. The work also indicated that the test method (ASTM C 672) may be more severe than most environments. A second phase developed an alternative laboratory test method to ASTM C 672 that would better represent the field performance of concretes, based on a method from the Canadian Quebec Ministry of Transportation.

The work described in this report was to repeat some tests using similar materials in a second laboratory to evaluate repeatability of the test methods.