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Numerical simulation of tensile failure of concrete using Particle Flow Code (PFC)
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  • Journal title : Computers and Concrete
  • Volume 18, Issue 1,  2016, pp.39-51
  • Publisher : Techno-Press
  • DOI : 10.12989/cac.2016.18.1.039
 Title & Authors
Numerical simulation of tensile failure of concrete using Particle Flow Code (PFC)
Haeri, Hadi; Sarfarazi, Vahab;
 Abstract
This paper considers the tensile strength of concrete samples in direct, CTT, modified tension, splitting and ring tests using both of the experimental tests and numerical simulation (particle flow code 2D). It determined that which one of indirect tensile strength is close to direct tensile strength. Initially calibration of PFC was undertaken with respect to the data obtained from Brazilian laboratory tests to ensure the conformity of the simulated numerical models response. Furthermore, validation of the simulated models in four introduced tests was also cross checked with the results from experimental tests. By using numerical testing, the failure process was visually observed and failure patterns were watched to be reasonable in accordance with experimental results. Discrete element simulations demonstrated that the macro fractures in models are caused by microscopic tensile breakages on large numbers of bonded discs. Tensile strength of concrete in direct test was less than other tests results. Tensile strength resulted from modified tension test was close to direct test results. So modified tension test can be a proper test for determination of tensile strength of concrete in absence of direct test. Other advantages shown by modified tension tests are: (1) sample preparation is easy and (2) the use of a simple conventional compression press controlled by displacement compared with complicate device in other tests.
 Keywords
tensile strength;direct test;CTT test;modified test;splitting test and ring test;
 Language
English
 Cited by
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