Abstract
Premature cracking is a prime cause for deterioration of concrete structures. Techniques, especially wave-based technologies, have been developed for monitoring deteriorations of such structures. Recently, techniques for healing of the deteriorations are emerging necessitating expansion of monitoring techniques to healing as well. This paper reports experimental results for healing of cracks of different widths in concrete and illustrates the ability of the ultrasonic techniques to monitor the progression of healing. A numerical technique based on two-dimensional finite difference time domain (FDTD) has been used to determine the potential of the ultrasonic stress waves in monitoring healing. Based on the theoretical results, an experimental study has been conducted on reinforced concrete samples by creating a fine tensile crack of width ∼0.1 mm and a relatively wide corrosion crack of ∼2 mm width. They were monitored ultrasonically after cement grout was injected in the cracks. It is found that the ultrasonic technique is able to discern the progressive healing process. Signal attenuation was found to be most suitable for monitoring healing.
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.
