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jzs-10632


Correlations of Uniaxial Compressive Strength and Modulus of Elasticity with Point Load Strength Index, Pulse Velocity and Dry Density of Limestone and Sandstone Rocks in Sulaimani Governorate, Kurdistan Region, Iraq.

Hyam Saleh Daoud1, Kamal Ahmad Rashed2 &Younis M. Alshkane3

1Irrigation Department, University of Sulaimani, Kurdistan Region-Iraq, hyam.daoud@univsul.edu.iq
2Civil Department, University of Sulaimani, Kurdistan Region-Iraq, kamal.rashed@univsul.edu.iq
3Civil Department, University of Sulaimani, Kurdistan Region-Iraq, younis.ali@univsul.edu.iq


Abstarct

The Uniaxial Compressive Strength (UCS) of rocks is important parameter in design of geotechnical engineering. If the rocks are affected by weathering agents, there will be difficult to obtain intact samples and to determine UCS in laboratory.Hence, the use of another engineering index of rocks as an alternative for determining UCShave been studied and investigated by researchers. The Pulse Velocity and Point Load tests are used as a quick, easy and non-expensive means of obtaining rock strength indexes. This paper presents an experimental study for correlating between Uiaxial Compressive Strength (UCS) and Point Load Index (PLI), Pulse Velocity (Vp), Dry Density andModulus of Elasticity (E) of limestones and sandstone rock samples. 80 specimens of limestones were obtained from Pila Spi and Lower Fars Formations and 46 specimens of sandstone were obtained from Tanjero  ormation. Based on the results, for the first time in this region, a new good correlation is introduced to estimate the UCS and Efrom Pulse Velocity, Point Load Index and Dry Density.

KeywordsUniaxial compressive, Strength; Point load, Index; pulse velocity; limestone; sandstone; strength correlation.



References:

[1] Azevedo I.C.D. and Marques E.A.G., "Introdução à Mecânica das Rochas". Ed. UFV, Viçosa, pp.361.(2006).

[2] Akram M. and Bakar M. Z. A., "Correlation between Uniaxial Compressive Strength andPoint Load Index for Salt-Range Rocks". Pak. J. Engg. & Appl. Sci. Vol. 1, pp. 1-8. (2007).

[3] Nazir Ramli, "Correlation Between Unconfined Compressive Strength and Indirect Tensile Strength of Limestone Rock Samples". EJGE, Vol. 18, Bund. I, pp. 1737-1746. (2013).

[4] Romana, M., "Correlation between Unconfined Compressive and Point-Load(Miller tests) Strengths for Different Rock Classes". In: 9th ISRM Congress, 1. Balkema,Paris, pp. 673–676. (1999).

[5] Kahraman S. "Evaluation of Simple Methods for Assessing the UniaxialCompressive Strength of Rock". Int J Rock MechMin Sci Vol. 38, pp.981–994. (2001).

[6] Ceryan N, Okkan U. and Kesimal, "A Prediction of Unconfined Compressive Strengthof Carbonate Rocks using Artificial Neural Networks". Environ Earth Sci. DOI10.1007/s12665-012-1783-z. (2012).

[7] Cargill J.S., and Shakoor A.,"Evaluation of Empirical Methods for Measuring theUniaxial Compressive Strength of Rock". Int J Rock Mech Min Sci & Geomech Abstr Vol. 27, pp. 495-503. (1990).

[8] Sharma P.K. and Singh T. N. A.,"Correlation between P-wave Velocity, ImpactStrength Index, Slake Durability Index and Uniaxial Compressive Strength", Bull. Eng. Geol. Environ. Vol. 67, pp. 17–22. (2008).

[9] Shakoor A.,and Bonelli R., "Relationship between Petrographic Characteristics,engineering index properties and mechanicalproperties of selected sandstones". BullAssoc. Eng. Geol. Vol. 28, pp. 55–71. (1991).

[10] Ulusay R, Tureli K, and Ider M. H., "Prediction of Engineering Properties of aselected Litharenite Sandstone from its Petrographic Characteristics using Correlationand Multivariate Statistical Techniques". Eng. Geol. Vol. 38, No. 2, pp. 135–157. (1994).

[11] Yasar, E., and Erdogan, Y., "Estimation of Rock Physiomechanical Properties usingHardness Methods" Eng. Geol. Vol. 71, pp. 281–288. (2004).

[12] Chang C, Zoback MD, and Khaksar A., "Empirical Relations between Rock Strengthand Physical Properties in Sedimentary Rocks". J. Petrol. Sci. Eng. Vol. 51. (2006).

[13] Vasconcelos G., Lourenco P.B., Alves C.S.A., and Pamplona J., "UltrasonicEvaluation of the Physical and Mechanical Properties of Granites". Ultrasonic’s Vol. 48, pp. 453–466. (2008).

[14] Moradian Z. and Behnia M.,"Predicting the Uniaxial Compressive Strength and StaticYoung’s modulus of Intact Sedimentary Rocks using the Ultrasonic Test". Int JGeomech, pp. 14–19. (2009).

[15] Diamantis K, Gartzos E, and Migiros G.,"Study on Uniaxial Compressive Strength,Point Load Strength Index, Dynamic and Physical Properties of Serpentinites fromCentral Greece: test results and empirical relations". Eng. Geol. Vol.108, pp. 199–207. (2009).

[16] Kohno, M. and Maeda, H., "Relationship between point load strength index anduniaxial compressive strength of hydrothermally altered soft rocks". International Journalof Rock Mechanics & Mining Sciences. Vol.50, pp. 147-157. (2012).

[17] D'Andrea, D. V., Fischer, R. L. and Fogelson, D. E., "US Department of the Interior, Bureau of Mines", Report of Investigations 6702, pp. 1-23.(1964).

[18] Broch E. and Franklin J.A., "The point-load strength test". Int. J. Rock Mech. Min. Sci. &Geomech. Abstr., Vol.9, pp. 669-667. (1972).

[19] Bieniawski Z.T., "Point load test in geotechnical practice". Eng. Geol., Vol. 9, pp. 1–11. (1975).

[20] Greminger M., "Experimental studies on the influence of rock anisotropy on size and shapeeffects in point load testing". Int. J. Rock Mech. Min. Sci. & Geomech. Abstr., Vol. 19, pp. 241–246. (1982).

[21] ISRM-International Society for Rock Mechanics., "Suggested method for determining pointload strength", Int J Rock Mech. Min. Sci. Geomech. Abstr., Vol. 22, pp. 53–60. (1985).

[22] Singh V.K. and Singh D.P., "Correlation between point load index and compressive strength for quartzite rocks". Geotech. Geol. Eng., Vol. 11, pp. 269–272. (1993).

[23] Kaya A. and Karaman K., "Utilizing the strength conversion factor in the estimation of uniaxial compressive strength from the point load index". Bull. Eng. Geol. Environ., DOI 10.1007/s10064-015- 0721-1. (2015).

[24] Bellen, R. C. V., Dunnington, H. V., Wetzel, R. and Motron, D.,"Laxiqae stratigraphique International". Asie, Fasc 10 a, Iraq, Paris. (1959).

[25] Jassim, S. Z. and Goff, J. C., "Geology of Iraq". pp. 341, Prague, Brno. (2006).

[26] Jassim, S. Z., Al-Shaibani, S. K, and Ajina, T. M.,"Possible Middle Eocene block movements in the Derbendikhan area, Northeastern Iraq". J. Geol. Soc. Iraq, Special Issue, Baghdad. (1975).

[27] ISRM-International Society for Rock Mechanics, "Rock characterization testing and monitoring–ISRM suggested methods". Ed. E. T. Brown. Pergamon Press, London, pp. 211. (2007).

[28] Altindag, R., "Correlation between P-wave velocity and some mechanical properties for sedimentary rocks". Journal of the Southern African Institute of Mining and Metallurgy, Vol. 112, No. 3, pp. 229- 237. (2012).

[29] Mahtab Alitalesh, Mostafa Mollaali and Mahmoud Yazdani, "The 15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering". Japanese Geotechnical Society Special Publication, Vol. 2, No. 12, pp. 504-507. (2015).


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