Title:
Consideration of Stress-Strain Curve in Concrete Creep Theories (Prepublished)
Author(s):
Vladimir Nikolaevich Elistratov
Publication:
Structural Journal
Volume:
Issue:
Appears on pages(s):
Keywords:
aging theory; concrete creep theory; creep coefficient; creep strain; elastic creep theory; elastic heredity theory; instantaneous strain, Sargin’s curve; stress-strain curve of concrete
DOI:
10.14359/51750734
Date:
5/14/2026
Abstract:
New refined theoretical models for the study of concrete creep have been proposed, which jointly take into account the non-linear relationship between stresses and strains of concrete (non-linear creep) and the non-linear relationship between stresses and instantaneous strains of concrete (stress-strain curve). The fundamental theories of creep that needed to be refined were the elastic-creeping solid theory, elastic heredity theory, and aging theory. The relationship from Eurocode 2 (Sargin’s formula) was used as the analytical relationship for the stress-strain curve. Within the framework of the refined theory of concrete aging, the problem of determining the concrete creep coefficient in the study of compressed reinforced concrete columns was solved. The effect of the stress-strain curve on the formula for determining the concrete creep coefficient, which is used in American, European, and Russian standards to take into account the loading duration of reinforced concrete structures, has been revealed.