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SETSCI - Volume 3 (2018)
ISAS2018-Winter - 2nd International Symposium on Innovative Approaches in Scientific Studies, Samsun, Turkey, Nov 30, 2018

Correlation between point load index and uniaxial compression strength for claystone from Caycuma formation Kocaeli, Turkey (ISAS2018-Winter_91)
Zülal Akbay Arama1*, Melek Yaramış2
1İstanbul University, İstanbul, Turkey
2İstanbul University, İstanbul, Turkey
* Corresponding author: zakbay@istanbul.edu.tr
Published Date: 2019-01-14   |   Page (s): 476-481   |    32     6

ABSTRACT Evaluation of rock engineering properties is a significant phenomenon for mining, civil and geotechnical engineering
disciplines. Uniaxial compressive strength is one of the most important engineering parameters and it is used to characterize
rocks from the strength point of view. The procedure to determine the uniaxial compression strength is standardized by
International Society of Rock Mechanics Commission on Testing Methods (ISRM) and American Society for Testing and
Materials (ASTM). The indirect method proposed by the societies are generally preferred to evaluate the uniaxial compressive
strength utilizing the point load test because of simplicity and inexpensiveness of application. Numerous correlations are offered
in the literature those are integrating uniaxial compression strength to the point load strength index. These equations’ variability
range is very large depending on the rock type and geological conditions. Because of these fundamental changes of equations it
becomes important to select the proper index for the determination of rock strength. This paper involves point load tests of clay
stones which are a member of Caycuma formation of Kocaeli province for evaluating the uniaxial compression strength. 208
point load tests and 30 uniaxial compression tests are used to identify Caycuma formations’ characteristics throughout fifty
meters depth. As a consequence, an appropriate particular index value for calculating Caycuma clay stones’ uniaxial compression
strength is achieved with the correlations subjected to the point load tests.  
KEYWORDS Rock, point load test, uniaxial compression strength, correlation.
REFERENCES [1] A. L. Fayed, Correlation Between Uniaxial Compressive Strength and Point Load Index for Simsima Limestone of Qatar Peninsula, International Conference on Advances in Structural and Geotechnical Engineering, Egypt, 6-9 April 2015.
[2] E. Hoek, Rock Mechanics Laboratory Testing in the Context of a Consulting Engineering Organization, International Journal of Rock Mechanics, Mining Science and Geomechanics, Abstract 14, pp. 93-101, 1977.
[3] J. Rusnak and C. Mark, Using the Point Load Test to Determine the Uniaxial Compressive Strength of Coal Measure Rock, 2004.
[4] M. Akram and M. Z. A. Bakar, Correlation Between Uniaxial Compressive Strength and Point Load Index for Salt-Range Rocks, Pakistan Journal of Engineering and Applied Sciences, Vol 1(1), pp. 1-7, 2007.
[5] ISRM, International Society of Rock Mechanics Commission on Testing Methods, Suggested Method for Determining Point Load Strength, International Journal of Rock Mechanics, Mining Science and Geomechanics, Abstract 22, pp. 51-60, 1985.
[6] Annual Book of ASTM Standards 4.08, Standard Test Method for Unconfined Compressive Strength of Intact Rock Core Specimens, Soil and Rock, Building Stones, ASTM, Philadelphia, Pennsylvania, 1984.
[7] A. Ateş, E. Totiç, B. Yeşil, Kutlubeyyazıcılar Kampüs Alanının (Bartın Üniversitesi) Yerleşime Uygunluk Açıdan Değerlenririlmesi, Düzce Üniversitesi Bilim ve Teknoloji Dergisi, Vol. 3, pp. 373-397, 2015.
[8] M. Galvan, J. Preciado, J. Seron, Correlation Between the Point Load Index, Is(50), and the Resistance to Unconfined Compression in Limestone from the Comunidad Valenciana, Spain, Acta Geotechnica Slovenica, 2, 2014.
[9] Z. T. Bieniawski, Point Load Test in Geotechnical Practice, Engineering Geology, 9(1), 1-11, 1975.
[10] E. Broch and J. A. Franklin, Point Load Strength Test, International Journal of Rock Mechanics and Mining Sciences, 9(6), 669-697, 1972.
[11] N. Brook, Size Correction for Point-Load Testing, International Journal of Rock Mechanics and Mining Sciences and Geomechnanical Abstract, 11, 231-235, 1980.
[12] I. R. Forster, The Influence of Core Sample Geometry on the Axial Point Load Test, International Journal of Rock Mechanics and Mining Sciences and Geomechanical Abstract, 20(6), 291-295, 1983.
[13] D. K. Ghosh and M. Srivastava, Point-Load Strength: An Index for Classification of Rock Material, Bulletin of the International Association of Engineering Geology, 44, 27-33, 1991.
[14] G. Guidicini, C.M. Nieble, A.T. Cornides, Analysis of Point Load Test as a Method for Preliminary Geotechnical Classification of Rocks, Bulletin of the International Association of Engineering Geology, 1973.
[15] D. V. D’Andrea, R. L. Fisher and D. E. Fogelson, Prediction of compression strength from other rock properties, Colorado Sch. Mines Quart., 59, (4B), 623–640, 1964.
[16] D. Deer and R. D. Miller, Engineering classification and index properties for intact rock, Univ. of Illinois, Tech. Rept. No. AFWLTR-65-116, 1966.
[17] F. P. Hassani, B. N. Whittaker and M. J. Scoble, Application of the Point Load Index Test to Strength Determination of Rock, Proposals for a New Size Correlation Chart. Proceeding of the 21st U.S. Symp. on Rock Mech., Rolla, MO., 1980.
[18] J. R. L. Read, P. N. Thornten and W. M. Regan, A rational approach to the point load test, Proceedings of the 3rd Australian– New Zealand geomechanics conference 2, 35–39, Wellington, Institution of Engineers., 1980.
[19] T. N. Singh, A. Kainthola and A. Venkatesh, Correlation between point load index and uniaxial compressive strength for different rock types, Rock Mechan. Rock Eng., 45, (2), 259–264., 2012.
[20] A. B. Hawkins, Aspects of rock strength, Bull. Eng. Geol. Environ., 57, (1), 17–30., 1998.
[21] J. S. Cargill and A. Shakoor, Evaluation of empirical methods for measuring the uniaxial compressive strength, Int. J. Rock Mech. Min. Sci., 27, (6), 495–503, 1990.
[22] D. K. Ghosh, D. K. and M. Srivastava, Point – load strength: an index for classification of rock material, Bull. Int. Assoc. Eng. Geol., 44, (1), 27–33, 1991.
[23] S. Kahraman, Evaluation of simple methods for assessing the uniaxial compressive strength of rock, Int. J. Rock Mech. Min. Sci., 38, (7), 981–994, 2001.
[24] G. Tsiambaos and N. Sabatakakis, Considerations on strength of intact sedimentary rocks, Eng. Geol., 72, (3–4), 261–273., 2004.
[25] M. E. Garrido, C. Hidalgo, J. I. Preciado, Practicas de laboratorio geotechnia y cimientos, I. Departmento de Ingenieria del Terreno, Universidad Politecnica de Valencia, 2010.

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