Primjena georadara u ocjeni stanja betonskih konstrukcija

Abstract

Maintenance costs of concrete structures can be reduced by efficient and extensive condition assessment. Rapid technological development has allowed application of innovative methodologies for the inspection of structures, which has in turn increased precision and efficiency of inspection activities. Potential for using ground-penetrating radar in the assessment of concrete structures has been considered for a long time and, with the improvement of the analysis tools, its application has been constantly increasing. Ground-penetrating radar is a technique based on emission of electromagnetic waves into the material, and on analysis of reflected waves, resulting in information about location and properties of a particular object. GPR is used for assessing condition of concrete structures, i.e. for the localization of reinforcement, determination of concrete cover, and localization of delamination. Recent research has shown that GPR data could be used for assessing corrosion of reinforcement. Following literature results on GPR-based study of concrete condition, main principles of GPR use are outlined in the paper.