A model for concrete subjected to triaxial stresses

R. G. Palaniswamy*, S. P. Shah

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


A model of concrete consisting of cylindrical pieces of aggregates in a matrix of cement paste was analyzed by the plane-stress finite element method. The three-dimensional case was reduced to a two-dimensional one by restricting the multiaxial stresses to the cylindrical triaxial state of stress. Assumptions regarding the material behavior were made from the observed properties of matrix under triaxial stresses and of the interface. The microcrack propagation and stresses and strains at failure for the model were compared with the experimental observations on concrete. The model correctly predicts an important aspect of the behavior of concrete subjected to triaxial stresses: the ductile-brittle transition. With increasing confining pressures beyond a certain value, the behavior of concrete changes from ductile (failure by extensive cracking and large strains) to a brittle one (failure by crushing of the matrix).

Original languageEnglish (US)
Pages (from-to)273-284
Number of pages12
JournalCement and Concrete Research
Issue number4
StatePublished - Jul 1975

ASJC Scopus subject areas

  • Building and Construction
  • Materials Science(all)


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