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Nokta yükleme deneyi ile ilgili uygulamada karşılaşılan problemler

Problems faced im the applications of the point load index test

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Abstract (2. Language): 
The point load index, test is .based on the principle that rock sample is broken between two conical platens.. Faiiure load and specimen dimensions are used to calculaie the point load strength index and this index is used in engineering geological studies.. In this paper, the problems related to the point load testing device and the common mistakes of the users are discussed. Based- on the experience of the author, a proposal far including "B* " dimension of the rock, failure time, and. textuml and structural information of the failure stiff ace of rock in the point load test form is given, k-value, defining the ratio between the uniaxial compressive strength (s&J and the point load strength index (Js(50))f varies significantly for different rocks. Therefore, k-values for different rocks should be assessed for engineering projects. In this study, a linear relationship with high correlation coefficient between (oc) and (ls^{rj) is given for tuffs,.
Abstract (Original Language): 
Nokta yükleme, deneyi., iki. konik, uç arasına yerleştirilen kayaç örneğinin 'kırılması esasına dayanmaktadır. Yenilme yükü ve örnek boyutları kullanılarak bulunan nokta yükleme dayanım indeksi çeşitli amaçlarla mühendislik jeolojisi çalışmalarında kullanılmaktadır., Bu makalede, nokta yükleme, deneyi, ile ilgili uygulamada karşılaşılan, aletsel. ve kullanıcıyı ilgilendiren problemler tartışılmıştır. Yazarın uygulamada elde. ettiği, deneyimleri sonucu, standart deney formuna kayacın '"'D'" boyuta, kırılma, zamanı ve yüzde, olarak yenilme yüzeyindeki süreksizliğin ve- kayaç dokusunun kontrolü hakkındaki bilgilerin eklenmesi önerilmiştir., Tek eksenli sıkışma dayanımı (öc) - nokta yükleme dayanım indeksi ( I s ^ ) oranının (k) değişik, kayaçlar için çok geniş bir aralıkta değişmesi nedeniyle,, mühendislik projelerinde bu oran ayrıca belirlenmelidir. Bu çalışmada, tüfler için kullanılabilecek yüksek korelasyon katsayısı veren fcT^-fls^o«,) ilişkisi, sunulmuştur
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