Author(s): M.R. Kianoush & H. Mirzabozorg
Concrete contains a large number of micro-cracks before any load is applied.
loading is applied, these micro-cracks propagate in concrete.
The low tensile
strength of concrete is the main cause of crack propagation.
In this chapter, the
behavior of concrete and its mechanical properties under uniaxial, biaxial and
triaxial states of stress are discussed.
Different numerical methods to model
tensile fracture of concrete in various stages are presented and their advantages
and disadvantages are reviewed.
A summary of information on factors
influencing the fatigue strength of concrete are presented.
Both the S–N approach
and the mechanistic approach for predicting the fatigue behavior of concrete are
Concrete is generally a mixture of cement, water, fine and coarse aggregate, air
and often other mixtures.
The chemical reaction between the cement and water
results in hardened concrete.
The final product has high compressive strength
and low tensile strength.
The tensile strength of concrete is approximately onetenth
of its compressive strength.
For this reason, reinforcement in the form of
mild deformed bars or high-strength steel is provided to resist the resulting
tensile stresses in concrete.
The resulting composite structure is referred to as
Size: 825 kb
Paper DOI: 10.2495/1-85312-836-8/10
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This paper can be found in the following bookAdvances in Fatigue, Fracture and Damage Assessment of MaterialsBuy