Structural Engineering and Mechanics

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Suggesting a new testing device for determination of tensile strength of concrete

  • Haeri, Hadi (Young Researchers and Elite Club, Bafgh Branch, Islamic Azad University) ;
  • Sarfarazi, Vahab (Department of Mining Engineering, Hamedan University of Technology) ;
  • Hedayat, Ahmadreza (Department of Civil and Environmental Engineering, Colorado School of Mines)
  • Received : 2016.02.27
  • Accepted : 2016.09.21
  • Published : 2016.12.25
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Abstract

A compression to tensile load transforming (CTT) device was developed to determine indirect tensile strength of concrete material. Before CTT test, Particle flow code was used for the determination of the standard dimension of physical samples. Four numerical models with different dimensions were made and were subjected to tensile loading. The geometry of the model with ideal failure pattern was selected for physical sample preparation. A concrete slab with dimensions of $15{\times}19{\times}6cm$ and a hole at its center was prepared and subjected to tensile loading using this special loading device. The ratio of hole diameter to sample width was 0.5. The samples were made from a mixture of water, fine sand and cement with a ratio of 1-0.5-1, respectively. A 30-ton hydraulic jack with a load cell applied compressive loading to CTT with the compressive pressure rate of 0.02 MPa per second. The compressive loading was converted to tensile stress on the sample because of the overall test design. A numerical modeling was also done to analyze the effect of the hole diameter on stress concentrations of the hole side along its horizontal axis to provide a suitable criterion for determining the real tensile strength of concrete. Concurrent with indirect tensile test, the Brazilian test was performed to compare the results from two methods and also to perform numerical calibration. The numerical modeling shows that the models have tensile failure in the sides of the hole along the horizontal axis before any failure under shear loading. Also the stress concentration at the edge of the hole was 1.4 times more than the applied stress registered by the machine. Experimental Results showed that, the indirect tensile strength was clearly lower than the Brazilian test strength.

Keywords

References

  1. Brady, B.H.G and Brown, E.T. (2006), Rock Mechanics for Underground Mining, 3rd Edition, Chapman & Hall, London.
  2. BS1881-117 (1983), Testing Concrete-Method for determination of tensile splitting strength, British Standards Institute, London.
  3. Cho, N., Martin, C.D. and Sego, D.C. (2007), "A clumped particle model for rock", Int. J. Rock Mech. Min. Sci., 44, 997-1010 https://doi.org/10.1016/j.ijrmms.2007.02.002
  4. Cho, N., Martin, C.D. and Sego, D.C. (2008), "Development of a shear zone in brittle rock subjected to direct shear", Int. J. Rock Mech. Min. Sci., 45, 1335-1346. https://doi.org/10.1016/j.ijrmms.2008.01.019
  5. Gerges, N., Issa, C. and Fawaz, S, (2015), "Effect of construction joints on the splitting tensile strength of concrete", Case Stud. Constr. Mater., 3, 83-91. https://doi.org/10.1016/j.cscm.2015.07.001
  6. Haeri, H. (2011), "Numerical modeling of the interaction between micro and macro cracks in the rock fracture mechanism using displacement discontinuity method", PhD Thesis, department of mining engineering, Science and Research branch, Islamic Azad University, Tehran, Iran.
  7. Haeri, H. (2015d), "Propagation mechanism of neighboring cracks in rock-like cylindrical specimens under uniaxial compression", J. Min. Sci., 51(3), 487-496. https://doi.org/10.1134/S1062739115030096
  8. Haeri, H. (2015e), "Influence of the inclined edge notches on the shear-fracture behavior in edge-notched beam specimens", Comput. Concrete, 16(4), 605-623, https://doi.org/10.12989/cac.2015.16.4.605
  9. Haeri, H. (2015f), "Experimental crack analysis of rock-like CSCBD specimens using a higher order DDM", Comput. Concrete, 16(6), 881-896. https://doi.org/10.12989/cac.2015.16.6.881
  10. Haeri, H. and Ahranjani, A.K. (2012), "A fuzzy logic model to Predict crack propagation angle under disc cutters of TBM", Int. J. Acad. Res., 4(3), 156-169.
  11. Haeri, H. and Sarfarazi, V., (2016), "The effect of micro pore on the characteristics of crack tip plastic zone in concrete", Comput. Concrete, 17(1), 107-112. https://doi.org/10.12989/cac.2016.17.1.107
  12. Haeri, H., Khaloo, K. and Marji, M.F, (2015b), "Experimental and numerical analysis of Brazilian discs with multiple parallel cracks", Arab. J. Geosci., 8(8), 5897-5908 https://doi.org/10.1007/s12517-014-1598-1
  13. Haeri, H., Marji, M. F. and Shahriar, K. (2015a), "Simulating the effect of disc erosion in TBM disc cutters by a semi-infinite DDM", Arab. J. Geosci., 8(6), 3915-3927. https://doi.org/10.1007/s12517-014-1489-5
  14. Haeri, H., Shahriar, K., Marji, M. F. and Moaref Vand, P. (2013b), "Simulating the bluntness of TBM disc cutters in rocks using displacement discontinuity method", Proceedings of 13th International Conference on Fracture, China.
  15. Haeri, H., Shahriar, K., Marji, M.F. and Moaref Vand, P. (2013a), "Modeling the propagation mechanism of two random micro cracks in rock samples under uniform tensile loading", Proceedings of 13th International Conference on Fracture, China.
  16. Haeri, H., Shahriar, K., Marji, M.F. and Moarefvand, P. (2014a), "On the cracks coalescence mechanism and cracks propagation paths in rock-like specimens containing pre-existing random cracks under compression", J. Central South Univ., 21(6), 2404-2414. https://doi.org/10.1007/s11771-014-2194-y
  17. Haeri, H., Shahriar, K., Marji, M.F. and Moarefvand, P. (2014b), "Investigating the fracturing process of rock-like Brazilian discs containing three parallel cracks under compressive line loading", Streng. Mater., 46(3), 133-148.
  18. Haeri, H., Shahriar, K., Marji, M.F. and Moarefvand, P. (2015c), "The HDD analysis of micro cracks initiation, propagation and coalescence in brittle substances", Arab. J. Geosci., 8, 2841-2852 https://doi.org/10.1007/s12517-014-1290-5
  19. Itasca Consulting Group Inc, Particle flow code in 2-dimen-sions (PFC2D), Version 3.10, (2004) "Minneapolis. granite in tension with damage", Theor. Appl. Fract. Mech., 36, 37-49.
  20. Kim, J. and Taha, M.R. (2014), "Experimental and numerical evaluation of direct tension test for cylindrical concrete specimens", Adv. Civil Eng., 2014, Article ID 15692.
  21. Liu, X., Nie, Z., Wu, S. and Wang, C. (2015), "Self-monitoring application of conductive asphalt concrete under indirect tensile deformation", Case Studi. Constr. Mater., 3, 70-77. https://doi.org/10.1016/j.cscm.2015.07.002
  22. Luong, M. (1990 ), "Tensile and shear strengths of concrete and rock Tensile and shear strengths of concrete and rock Tensile and shear strengths of concrete and rock Tensile and shear strengths of concrete and rocktensile and shear strength of concrete and rock", Eng. Fract. Mech., 35(1-3), 127-135. https://doi.org/10.1016/0013-7944(90)90190-R
  23. Maso, J.C. (1967), "La nature mineralogique des agregats facteur essentiel de la resistance des betons a larupture et a l'action du gel", Ph.D. Thesis, University of Paul Sabatier, Toulouse, France.
  24. Mier, J.G.M. and Vliet, M.R.A. (2002), "Uniaxial tension test for the determination of fracture parameters of concrete", Eng. Fract. Mech., 69, 235-247. https://doi.org/10.1016/S0013-7944(01)00087-X
  25. Mobasher, B., Bakhshi, M. and Barsby, C. (2014), "Backcalculation of residual tensile strength of regular and high performance fiber reinforced concrete from flexural tests", Constr. Build. Mater., 70, 243-253. https://doi.org/10.1016/j.conbuildmat.2014.07.037
  26. Potyondy, D.O. and Cundall, P.A. (2004), "A bonded-particle model for rock", Int. J. Rock Mech. Min. Sci., 41(8), 1329-1364. https://doi.org/10.1016/j.ijrmms.2004.09.011
  27. Rocco, R., Guinea, G.V., Palans, J. and Elices, M. (2001), "Review of the splitting-test standads from a fracture mechanics point of view", Cement Concrete Res., 31(1), 73-82. https://doi.org/10.1016/S0008-8846(00)00425-7
  28. Sardemir, M. (2016), "Empirical modeling of flexural and splitting tensile strengths of concrete containing fly ash by GEP", Comput. Concrete, 17(4), 489-498. https://doi.org/10.12989/cac.2016.17.4.489
  29. Sarfarazi, V. Faridi, H.R., Haeri, H. and Schubert, W. (2015), "A new approach for measurement of anisotropic tensile strength of concrete", Adv. Concrete Construct., 3(4), 269-284. https://doi.org/10.12989/acc.2015.3.4.269
  30. Silva, R.V., Brito, J. and Dhir, R.K. (2015), "tensil strength behaviour of recycled aggregate concrete", Constr. Build. Mater., 83, 108-118. https://doi.org/10.1016/j.conbuildmat.2015.03.034
  31. Swaddiwudhipong, S., Lu, H.R. and Wee, T.H. (2003), "Direct tension test", Cement Concrete Res, 33, 2077-2084. https://doi.org/10.1016/S0008-8846(03)00231-X
  32. Tiang, Y., Shi, S., Jia, K. and Hu, S. (2015), "Mechanical and dynamic properties of high strength concrete modified with lightweight aggregates presaturated polymer emulsion", Constr. Build. Mater., 93, 1151-1156. https://doi.org/10.1016/j.conbuildmat.2015.05.015
  33. Wan Ibrahim, M.H., Hamzah, A.F., Jamaluddin, N., Ramadhansyah, P.J. and Fadzil, A.M. (2015), "Split Tensile Strength on Self-compacting Concrete Containing Coal Bottom Ash", Procedia, Soc. Behav. Sci., 198, 2280-2289.
  34. Zain, M.F.M, Mahmud, H.B, Ilham, A. and Faizal, M. (2002), "Prediction of splitting tensile strength of high-performance concrete", Cement Concrete Res, 32, 1251-1257. https://doi.org/10.1016/S0008-8846(02)00768-8
  35. Zhou, F.P. (1988), "Some aspects of tensile fracture behaviour and structural response of cementitious materials", Report TVBM-1008 Division of Building Materials, Lun Institue of Technology.

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