Abstract
Ground Probing Radar (GPR) measurements have been made on laboratory concrete structures for detecting cavities or gravel pockets and for determining if they are filled with air or water. GPR has been applied on tunnel walls and showed cavities which were confirmed by drilling. In certain cases, the system allows us to measure the thickness of the cavities. GPR measurements have also been made for locating shallow karstic zones on a building site after earth works. They showed the presence of a great number of shallow karstic zones. The results have been verified by 49 drillings and were confirmed in 88% of the cases. The interpretation of GPR suggested some karstic zones where drillings showed only fissures but every drilling with karst corresponded with strong GPR reflections. The GPR measurements localized a few of big cavities, one of which has been injected with 4.5 m 3 of concrete.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
