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    Determination of physical properties of carbonate rocks from P-wave velocity
    (SPRINGER HEIDELBERG, 2008) Kahraman, Sair; Yeken, Tekin
    Velocity, density, porosity, void ratio, water absorption by weight and P-wave velocity tests were conducted on 14 different carbonate rocks. Strong correlations between P-wave velocity and all the physical properties of the rock were found. The relations follow a linear function. The equations developed were compared with others in the literature. Although it appears that the physical properties of the tested carbonate rocks can be estimated from P-wave velocity, the validity of the derived equations must be checked for other carbonate rocks as the equations given are likely to be specific to the test method and vary with rock type, degree of saturation and presence of bedding planes.
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    Electrical resistivity measurement to predict uniaxial compressive and tensile strength of igneous rocks
    (INDIAN ACAD SCIENCES, 2010) Kahraman, Sair; Yeken, Tekin
    Electrical resistivity values of 12 different igneous rocks were measured on core samples using a resistivity meter in the laboratory. The resistivity tests were conducted on the samples fully saturated with brine (NaCl solution) and the uniaxial compressive strength (UCS), Brazilian tensile strength, density and porosity values of the samples were determined in the laboratory. The test results were evaluated using simple and multiple regression analysis. It was seen that the UCS and tensile strength values were linearly correlated with the electrical resistivity. The correlation coefficients are generally higher for the multiple regression models than that of the simple regression models. It was concluded that the UCS and tensile strength of igneous rocks can be estimated from electrical resistivity. However, the derived relations are purely empirical and they should be checked for other igneous rocks. The effect of rock types such as sedimentary and metamorphic rocks on the derived equations also needs to be investigated.
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    HYDROCHEMICAL EXAMINATION OF UNDERGROUND LEAKAGE WATER SPREAD FROM OPEN LANDFILL IN AKSARAY CITY IN TURKEY AND DETERMINATION OF ITS LOCATION. CASE STUDY
    (Wroclaw University of Science and Technology, 2024) Öztürk, Ernam; Yeken, Tekin; Ersesyay, Aliye Suna; Özaydin, Cengiz Murat
    Uncontrolled dumping of open landfills has been becoming a significant threat to developing countries. The areas where solid wastes are stored increase the risk of groundwater and environmental pollution. Groundwater pollution causes poisoning and even death in terms of public health. This study investigated the impact area of pollutants that pose environmental risks in the Hamamboğazı (Aksaray Turkey) landfill area. Six vertical electrical sounding (VES) measurements were made in the study area. The direction of the leakage water is southwest, and the penetration depth is 15 m. The electrical conductivity reaching high values such as 4160–7900 ?S/cm shows the polluting effect of the leachate. Heavy metals detected in leachate were Cu (0.183 mg/dm3), Pb (0.234 mg/dm3), Zn (0.33 mg/dm3), and Fe (3.179 mg/dm3). © 2024 Wroclaw University of Science and Technology. All rights reserved.