Fig. 9From: Seasonal Variation and Age-related Changes in the Relative Permittivity of Concrete Bridge Decks on Korea ExpresswaysVariation of relative permittivity of concrete in three bridge groups of similar relative humidity (RH) with concrete age: group 1 for RH lower than 50%, group 2 for RH between 50 and 60%, group 3 for RH equal to or greater than 60%.Back to article page