PSI - Issue 64

Alexander Shuvalov et al. / Procedia Structural Integrity 64 (2024) 445–455 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

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5. Conclusions Based on the results of our work, the following conclusions can be drawn: 1. Both GPR (ground penetrating radar) and ultrasonic methods can successfully detect internal concrete defects. 2. The GPR profiling method allows for faster work, but it requires additional processing of the data received; 3. When using the ultrasonic end-to-end sound method, it is possible to analyze readings in real-time, estimating the speed of ultrasound waves relative to average readings. In contrast, GPR requires data post-processing. However, end-to-end ultrasound requires at least two people to perform the study, whereas the GPR allows one person to do the work; 4. Despite the success of these two methods, they are indirect and require confirmation by direct methods (such as extracting core samples) to verify results. References Bugaev A., Ivashov S., Razevig V., Chizh M. (2020). Comparison of microwave diagnostics with other methods of non-destructive testing of composite products. Advances in modern radioelectronics. – Т. 74, № 4 -5. – pp. 19-38 . De La Haza, A., Samokrutov А ., Shevaldykin V. (2016). Diagnostics of reinforced concrete tunnel walls with ultrasonic tomograph. The world of measurement. № 1. – С. 18-22. Ivashov S., Razevig V., Capineri L., Bechtel T., Inagaki M., Gueorguiev N., Kizilay A. (2021) DESIGN AND APPLICATIONS OF MULTI FREQUENCY HOLOGRAPHIC SUBSURFACE RADAR: REVIEW AND CASE HISTORIES // Remote Sensing. Т. 13 . № 17. Kalashnikov, A., Lapshinov, A. (2019). OBSERVATION OF THE TECHNICAL CONDITION OF CROWN WOOD CONCRETE BARRIERS OF LARGE SECTION WITH GEORADAR // In Collection: Inspection of Buildings and Structures: Problems and Ways of Their Solution. materials of X scientific-practical conference. ed. by A. V. Ulybin. pp. 89-93 . Kapustin V., Hmel'nickij A. (2014). Application of seismoacoustic and georadar observation complex at examination of hydraulic structures Geotechnics. № 1 -2. pp. 74-84 . Kunin, Y., Perunov А . (2023).Vibroacoustic methods of quality control of building structures of buildings and constructions. Industrial and civil construction. № 3. – С. 55 -61. – DOI 10.33622/0869-7019.2023.03.55-61. – EDN XRKUCN. Lozovsky I., Churkin A., Zhostkov R. (2020). NUMERICAL SIMULATION OF ULTRASONIC PILE INTEGRITY TESTING Russian Journal of Nondestructive Testing. Т. 56 . № 1. Lapshinov, A., Kalashnikov, A. (2018). Inspection of the technical condition of the foundation slab reinforced with glass composite reinforcement using GPR // In Collection: Inspection of Buildings and Structures: Problems and Ways of Their Solution. Materials of IX scientific-practical conference. pp. 133-139 . Nigel J., Eddies R., Dods S. (2011). “A comparison between GPR and ultrasonic techniques for void detection beneath reinforce d concrete sections.” Journal of Applied Geophysics, vol.74(4), pp 263 – 276. doi: 10.3997/2214-4609.20144415 Sambuelli, L.; Bohm, G.; Capizzi, P.; Cardarelli, E.; Cosentino, P. (2011). Comparison among GPR measurements and ultrasonictomographies with different inversion algorithms. An application to the basement of an ancient Egyptian sculpture. J. Geophys.Eng. 8, S106 – S116. https://doi.org/10.1088/1742-2132/8/3/S10. Shirobokov M., Kapustin V., Churkin A. (2022). In the book: Engineering and Ore Geophysics 2022. Collection of materials of the 18th scientific and practical conference and exhibition. Moscow. pp. 302-307 . Sudakova M., Kalashnikov A., Vladov M., Terent'eva E., Marchenko A., Sadurtdinov M. (2017). Searching for structural voids in building structures by GPR. Geotechnics, № 2, М., ООО «Geomarketing», pp. 42-50 . Ulybin A., Fedotov S. (2009) Application of ultrasonic method for assessment of reinforced concrete damage zone after fire Engineering and Construction Journal. № 7 (9). pp. 38-40 . Zerkal' E., Kalashnikov A., Lapshinov A., Tyutyunkov A. (2020). Detection of internal concreting defects in the body of a monolithic foundation slab using GPR survey data. Bulletin of MGSU. Т. 15. № 7. pp. 980-987 . Zerkal', E., Kalashnikov, A., Lapshinov, A. (2023). Using Ground Penetrating Radars to Detect Cold Joints in Reinforced Concrete Structures. In: Ilki, A., Çavunt, D., Çavunt, Y.S. (eds) Building for the Future: Durable, Sustainable, Resilient. fib Symposium 2023. Lecture Notes in Civil Engineering, vol 349 . Springer, Cham. https://doi.org/10.1007/978-3-031-32519-9 48.