The chloride penetration resistance of concrete is of major importance because of the role chlorides play in the corrosion process of steel reinforced structures. The present methods used to characterize the chloride penetration resistance are expensive and time consuming thereby limiting their use as a routine quality control tool. There is a need for a non-destructive test method that can serve as an indicator of permeability. The use of electrical resistivity was investigated by comparing the results obtained with those of the Rapid Chloride Permeability (RCP) test (ASTM C1202, ASHHTO T277.) A table classifying the different permeability ranges is given as an aid to characterize permeability, similar to the table given in the RCP test method. Variables influencing resistivity measurement values are also examined.

Subject
Test methods, Water, Curing, Cylinders, Probes, Permeability, Deviation, Scatter, Technicians, Electrical resistivity, Chlorides, Concrete, Samples
Keywords:
RCP, resistivity, permeability, diffusion, durability, silica fume, fly ash, GGFS, marine structure, deck
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2005
Association for Materials Protection and Performance (AMPP)
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