ISSN: 0149-6123
CODEN: CCAGPD
Page Count: 7

Precision of Tests for Assessment of the Deicer Salt Scaling Resistance of Concrete
Marchand, J
Centre de Recherche Interuniversitaire sur le Béton, Université Laval,

Pigeon, M
Centre de Recherche Interuniversitaire sur le Béton, Université Laval,

Pleau, R
Centre de Recherche Interuniversitaire sur le Béton, Université Laval,

Abstract

Some aspects of the variability of Test Method for Scaling Resistance of Concrete Surfaces Exposed to Deicing Chemicals (ASTM C 672) measurements are discussed in this paper. The influence of the operator's subjectivity on the visual rating is studied. The relationship between the visual rating and the cumulated mass of scaled-off particles is also analyzed. From a statistical analysis of several hundred different concrete mixtures, the variability of the test method is estimated for various types of concrete considering only the cumulated mass of scaled-off particles. Using the same statistical analysis, the precision of ASTM C 672 is finally compared to that of the Canadian brine immersion test (Precast Concrete Paving Blocks, CAN/CSA A231.2 M85) designed to assess the deicer salt scaling resistance of precast concrete elements.

Keywords:
deicing, scaling, statistical variability, test methods, visual rating

Paper ID: CCA10155J
DOI: 10.1520/CCA10155J
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