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The effect of rock classes on the relation between uniaxial compressive strength and point load index

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Abstract

Uniaxial compressive strength and point load tests were carried out on 17 igneous, 16 metamorphic and 19 sedimentary rocks and the values correlated with their I s values. The influence of the different rock type was investigated using regression analysis and the derived equations were statistically tested. Although the derived equation for all data is significant, the data points are scattered and the coefficient of correlation is not strong. However, when the regression analysis was repeated for igneous, metamorphic and sedimentary rocks respectively, the data were less scattered and stronger correlation coefficients were obtained.

Résumé

Des essais de résistance à la compression simple et des tests de chargement entre pointes ont été réalisés sur 17 roches magmatiques, 16 roches métamorphiques et 19 roches sédimentaires et les valeurs corrélées avec les valeurs Is. L’influence du type de roche sur la résistance a été étudiée par analyses de régression et les équations obtenues ont fait l’objet de tests statistiques. Bien que les équations obtenues pour l’ensemble des mesures soient significatives, les résultats de mesure sont dispersés et le coefficient de corrélation n’est pas élevé. Par contre, quand l’analyse de régression est réalisée spécifiquement pour les roches magmatiques, les roches métamorphiques ou les roches sédimentaires, les résultats de mesure sont moins dispersés et des coefficients de corrélation plus élevés sont obtenus.

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Acknowledgments

This work has been partially supported by the Turkish Academy of Sciences, in the framework of the Young Scientist Award Program (EA-TUBA-GEBIP/2001-1-1).

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Authors and Affiliations

  1. Mining Engineering Department, Nigde University, 51100, Nigde, Turkey

    S. Kahraman

  2. Geological Engineering Department, Nigde University, 51100, Nigde, Turkey

    O. Gunaydin

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  1. S. Kahraman
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  2. O. Gunaydin
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Correspondence to S. Kahraman.

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Kahraman, S., Gunaydin, O. The effect of rock classes on the relation between uniaxial compressive strength and point load index. Bull Eng Geol Environ 68, 345–353 (2009). https://doi.org/10.1007/s10064-009-0195-0

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  • DOI: https://doi.org/10.1007/s10064-009-0195-0

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