Strength of Plain Concrete Under Biaxial Stress


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Title: Strength of Plain Concrete Under Biaxial Stress

Author(s): Israel Rosenthal and Joseph Glucklich

Publication: Journal Proceedings

Volume: 67

Issue: 11

Appears on pages(s): 903-914

Keywords: biaxial stresses; combined stress; compression;cracking (fracturing) ; failure mechanisms;plain concrete; research; shear properties;specimens; strains; tension.

Date: 11/1/1970

Tests are reported on 87 hollow concrete cylinders made of two types of concrete, under biaxial and uniaxial stresses, and stress combinations. Comprehensive strain measurements were carried out in all three principal directions. Surface and internal cracking was observed and establishment of its point of onset noted. Failure was found to occur in two modes: separation or splitting under biaxial or uniaxial tension, or a combination of tension and perpendicular compression, and sliding or shear under biaxial compression. Two criteria, both based on a physical concept of the failure mechanism, are presented. would probably be even better if the present Comparison of the Griffith theory and test results involving failure by splitting, shows a promising alternative to the strain criterion which theory is modified for concrete.