Mechanical properties of rocks such as uniaxial compressive strength, tensile strength, shear strength are the properties that determine their behavior under load. These properties of rocks are often determined by difficult, complex, time-consuming and expensive test methods. Therefore, instead of determining these properties directly, these properties can be estimated indirectly by using relatively inexpensive, fast and easily applicable methods. The surface hardness parameter of Schmidt hammer rebound hardness is fast, inexpensive, and easy to apply to determine the hardness of rocks and concrete. It is also used to indirectly determine the mechanical properties of rocks. It is seen that two different types of hammers (N-type and L-type) with different impact energies are commonly used in the literature. In this study the correlations between the surface hardness of different rocks obtained using N-type and L-type Schmidt hammers were analyzed. For this purpose, data were compiled from studies in the literature, which included both N-type and L-type Schmidt hammer rebound hardness of different rock types, and the collected data were analyzed statistically. Coefficients have been proposed for the conversion of N-type and L-type Schmidt hammer rebound hardness to each other.
Groundwater is widely used for both potable water and agricultural purposes in Turkey. In this study, groundwater quality and the factors of contamination with their impact areas has been assessed using geographical information systems and geostatistical techniques at Seyfe Lake, east of Kırşehir province. For this purpose, the samples from groundwater has been chemically analyzed depending on TS 266-2005 and WHO-2006 standards and contamination maps has been prepared using Inverse Distance Weighting (IDW) interpolation techniques. It has been thought that the contaminations at the study area is related with lithology and NO3, SO4, As, F and U increase depending on unconscious use of fertilizers and pesticides in agriculture. The groundwater that can be used as potable water has been determined around Bozçaldağ formation (marble). Therefore, it has been foreseen that Bozçaldağ formation areas can primarily be preferred for groundwater that will be used as potable water.
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