A Review of Stress-Strain Relationships for Concrete


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Title: A Review of Stress-Strain Relationships for Concrete

Author(s): Sandor Popovics

Publication: Journal Proceedings

Volume: 67

Issue: 3

Appears on pages(s): 243-248

Keywords: axial loads; compressive stress; concretes;crack propagation; deformation; flexural strength; modulus of elasticity; numerical analysis; plain concrete; reinforced concrete; strains; stresses; stress-strain relationships; tests.

Date: 3/1/1970

The instantaneous deformations of a concrete under load are influenced considerably by the testing conditions and composition of concrete. The mechanism of such deformations can be explained in qualitative terms by the theory of internal crack propagation; for numerical approximation, however, only empirical formulas are available. Empirical formulas are also available for the estimation of the unit strain and the secant modulus of elasticity of concrete at the ultimate compressive stress.