Influence of the Width of the Loading Strip in the Brazilian Tensile Test of Concrete and Other Brittle Materials
Publication: Journal of Materials in Civil Engineering
Volume 28, Issue 11
Abstract
Difficulties presented by the direct tensile test of nonhomogeneous, brittle materials were circumvented by the proposal of an indirect tensile test for concrete, known in the literature as the Brazilian test, which found applications in the technology of concrete, rocks, ceramics and other materials. Relationships between the predictions of the Brazilian test and the results of both the direct tensile test and the unconfined compression test have been proposed on the basis of experimental evidence. On the other hand, developments in numerical fracture analysis allowed for the examination of the fracture process in the test, including the consideration of scale and rate effects. The discrete element method was used to determine the nonlinear response of brittle solids and to predict the response of simulated concrete samples subjected to indirect tensile tests. This paper extends this approach to more precisely quantify the role of factors such as the width and stiffness of the strips inserted between the press platens and the sample cylinders. The flexibility of the strip exerts a marginal influence on the result of the test. The predictions of the indirect splitting tensile test would significantly improve by replacing the wood strip (with ) by a metallic strip with curved lower surface and larger width. A thorough experimental program should be carried out to establish the optimum width for normal concrete and/or other materials or sample sizes.
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Acknowledgments
The authors acknowledge the financial support of Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) and Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) (Brazil).
References
Aráoz, G., and Luccioni, B. (2015). “Modeling concrete like materials under sever dynamic pressures.” Int. J. Impact Eng., 76, 139–154.
Armero, F., and Linder, C. (2008). “New finite elements with embedded strong discontinuities in the finite deformation range.” Comput. Methods Appl. Mech. Eng., 197(33-40), 3138–3170.
Belytschko, T., Moes, N., Usui, S., and Parimi, C. (2001). “Arbitrary discontinuities in finite elements.” Int. J. Numer. Methods Eng., 50(4), 993–1013.
Darvell, B. W. (1990). “Uniaxial compression tests and the validity of the indirect tensile strength.” J. Mater. Sci., 25, 757–780.
Erarslan, N., Liang, Z. Z., and Williams, D. J. (2012). “Experimental and numerical studies on determination of indirect tensile strength of rocks.” Rock Mech. Rock Eng., 45(3), 739–751.
Fairbairn, E. M. R., and Ulm, F.-J. (2002). “A tribute to Fernando L. L. B. Carneiro (1913–2001) engineer and scientist who invented the Brazilian test.” Mater. Struct., 35(3), 195–196.
Hillerborg, A. (1978). “A model for fracture analysis.”, Lund Institute of Technology, Lund, Sweden.
Hillerborg, A. (1985). “Numerical methods to simulate softening and fracture of concrete.” Fracture mechanics of concrete: Structural application and numerical calculation, G. C. Sih and A. D. Tomaso, eds., Springer, Dordrecht, the Netherlands, 141–170.
Hondros, G. (1959). “The evaluation of Poisson’s ratio and modulus of materials of a low tensile resistance by the Brazilian indirect tensile test with particular reference to concrete.” J. App. Sci., 10(3), 243–268.
Iturrioz, I., Miguel, L. F. F., and Riera, J. D. (2009). “Dynamic fracture analysis of concrete or rock plates by means of the discrete element method.” Lat. Am. J. Solids Struct., 6(3), 229–245.
Iturrioz, I., Riera, J. D., and Miguel, L. F. F. (2014). “Introduction of imperfections in the cubic mesh of the truss-like discrete element method.” Fatigue Fract. Eng. Mater. Struct., 37(5), 539–552.
Kosteski, L., Barrios D’Ambra, R., and Iturrioz, I. (2012). “Crack propagation in elastic solids using the truss-like discrete element method.” Int. J. Fract., 174(2), 139–161.
Lin, Z., and Wood, L. (2003). “Concrete uniaxial tensile strength and cylinder splitting test.” J. Struct. Eng., 692–698.
Lofti, H. R., and Shing, P. B. (1995). “Embedded representation of fracture in concrete with mixed finite-elements.” Int. J. Numer. Methods Eng., 38(8), 1307–1325.
Markides, C. F., Pazis, D. N., and Kourkoulis, S. K. (2011). “Influence of friction on the stress field of the Brazilian tensile test.” Rock Mech. Rock Eng., 44(1), 113–119.
Miguel, L. F. F., Iturrioz, I., and Riera, J. D. (2010). “Size effects and mesh independence in dynamic fracture analysis of brittle materials.” Comput. Model. Eng. Sci., 56(1), 1–16.
Miguel, L. F. F., Iturrioz, I., and Riera, J. D. (2014). “Evaluación del ensayo de tracción indirecta considerando fractura y la heterogeneidad del hormigón.” Anales de las Jornadas Sudamericanas de Ingenieria Estructural, Associação Sul-Americana de Engenharia Estrutural (ASAEE).
Miguel, L. F. F., Riera, J. D., and Iturrioz, I. (2008). “Influence of size on the constitutive equations of concrete or rock dowels.” Int. J. Numer. Anal. Methods Geomech., 32(15), 1857–1881.
Oliver, J., Huespe, A. E., and Dias, I. F. (2012). “Strain localization, strong discontinuities and material fracture: Matches and mismatches.” Comput. Methods Appl. Mech. Eng., 241–244, 323–336.
Radulovic, R., Bruhns, O. T., and Mosler, J. (2011). “Effective 3D failure simulations by combining the advantages of embedded strong discontinuity approaches and classical interface elements.” Eng. Fract. Mech., 78(12), 2470–2485.
Riera, J. D. (1984). “Local effects in impact problems on concrete structures.” Proc., Conf. on Structural Analysis and Design of Nuclear Power Plants, Vol. 3, Rio Grande do Sul Univ., Porto Alegre, Brazil, 57–79.
Riera, J. D., Miguel, L. F. F., and Iturrioz, I. (2011). “Strength of brittle materials under high strain rates in DEM simulations.” Comput. Model. Eng. Sci., 82(2), 113–136.
Riera, J. D., Miguel, L. F. F., and Iturrioz, I. (2014a). “Assessment of Brazilian tensile test by means of the truss-like discrete element method (DEM) with imperfect mesh.” Eng. Struct., 81, 10–21.
Riera, J. D., Miguel, L. F. F., and Iturrioz, I. (2014b). “Study of imperfections in the cubic mesh of the truss-like discrete element method (DEM).” Int. J. Damage Mech., 23(6), 819–838.
Rocco, C., Guinea, G. V., Planas, J., and Elices, M. (2001). “Review of the splitting-test standards from a fracture mechanics point of view.” Cem. Concr. Res., 31(1), 73–82.
Rodríguez, J., Navarro, C., and Sánchez-Gálvez, V. (1994). “Splitting tests: An alternative to determine the dynamic tensile strength of ceramic materials.” EURODYMAT 1994–4th Int. Conf. on Mechanical and Physical Behaviour of Materials under Dynamic Loading, Vol. 4, EDP Science, Les Ulis, France, C8-101–C8-106.
Rots, J. G., Nauta, P., Kusters, G. M., and Blaauwendraad, J. (1985). “Smeared crack approach and fracture localization in concrete.” Heron, 30(1), 1–49.
Wells, G. N., and Sluys, L. J. (2001). “A new method for modelling cohesive cracks using finite elements.” Int. J. Numer. Methods Eng., 50(12), 2667–2682.
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Published In
Journal of Materials in Civil Engineering
Volume 28 • Issue 11 • November 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Jul 21, 2015
Accepted: Feb 24, 2016
Published online: Jun 10, 2016
Published in print: Nov 1, 2016
Discussion open until: Nov 10, 2016
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