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Nowadays, non-destructive testing (NDT) methods plays important role in the evaluation and testing of civil engineering structures.The aim of the study is to give basic principles of some NDT methods and their limitations in the structural evaluation programme, and provide information about agreed standards and guidelines from the interpretation of the physical data that obtained various concrete materials.Five prismatic and five cylindrical concrete specimens are produced for the purpose of the study.On the prism models, Wenner, Schlumberger, and dipole-dipole arrays used to obtain Electrical Resistivity and induced polarisation (IP) data. 2-Dimensional (2D) Resistivity and IP inversion programme used for the interpretation. On the cylinder models, Wenner and dipole-dipole arrays used to obtain data, and interpreted using 2D inversion programme.Ultrasound Pulse Velocity Method is used to determine P wave velocities of the specimens.After completion of the NDT methods Destructive Testing methods (Compressive Strength, Flexure Strength, and Splitting Tensile Strength) are conducted on the specimens.Key Words: NDT, Concrete, Electrical Resistivity, Induced Polarisation, P wave velocity, Destructive Testing
In this thesis, Sarıçiçek (Gümüşhane) and Sarıhan granodiorites (Bayburt) and their surrounding formations are examined using in-situ gamma-ray spectrometer and magnetic susceptibility measurements. The radiogenic heat production values for those areas are calculated. All results obtained these two in-situ measurement methods and the laboratory analyses of the rock and soil samples collected from Sarıçiçek granodiorite are jointly interpreted to reveal geological properties coherency with the geophysical measurements. The average K, U and Th values for Sarıçiçek granodiorite are 2.98%, 3.15 ppm, 12.45 ppm and Sarıhan granodiorite are 1.83%, 2.73 ppm, 13.6 ppm, respectively. The granitic plutons have higher radioactivity than their surrounding formations, which are composed of basaltic, sedimantery or ultramafic rocks. Based on the concentrations of K, U, Th and their ratios, it is concluded that granitic rocks exposed in both area are formed as a mixture of the upper mantle and crustal materials. The average heat production for Sarıçiçek and Sarıhan granodiorites are estimated as 1.9 μWm−3 and 2.03 μWm−3, which are closer to the upper continental crustal value. In each studied area, different susceptibility variations are related to the rock and mineral types, exist in those areas. The boundary between plutons and surrounding formations are markedly revealed by the susceptibility variations. According to calculated radiological hazard parameters, there is no significant radiologic hazards for humans and environment in and around studied areas.