Abstract
In this paper, the near- and far-field microwave methods used in this study indicate that the microwave reflections and dielectric properties are useful parameters for the detection of chloride in concrete material. Furthermore, the amount of chloride present in concrete at the time of mixing can also be determined. The reflection coefficients, dielectric constant and loss factor in the X-band microwave frequencies increase with increasing chloride content in concrete materials and can be used to monitor the hydration process. A linear relationship between the microwave properties of concrete and chloride content were established.
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