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Seasonal Variation and Age-related Changes in the Relative Permittivity of Concrete Bridge Decks on Korea Expressways

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Academic year: 2020

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Figure

Fig. 1 Air-coupled GPR system used for concrete bridgedeck survey.
Fig. 2 GPR scanning on a bare concrete deck: a possible path of EM waves in concrete bridge decks and b typical signalmeasured from a receiver antenna.
Fig. 4 Variation of relative permittivity of concrete with concrete age before considering the effect of relative humidity of air: a linearand b logarithmic scale in the horizontal axis for concrete age.
Fig. 5 Variation of relative permittivity of concrete by month, and the variation in the relative humidity of the air by month.
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