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The shape of idealized stress-strain curve for concrete as prescribed by IS 456-1978 is:
- a)Rectangular.
- b)Parabolic
- c)Rectangular-Parabolic
- d)None of these.
Correct answer is option 'C'. Can you explain this answer?
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The shape of idealized stress-strain curve for concrete as prescribed ...
The Idealized Stress-Strain Curve for Concrete as prescribed by IS 456-1978
The idealized stress-strain curve for concrete as prescribed by IS 456-1978 is a rectangular-parabolic curve. This means that the curve is a combination of two shapes, a rectangular shape and a parabolic shape.
Rectangular Shape:
The rectangular shape of the stress-strain curve represents the elastic behavior of concrete. This means that the concrete behaves like an elastic material up to a certain stress level. At this stress level, the concrete starts to deform plastically.
Parabolic Shape:
The parabolic shape of the stress-strain curve represents the post-elastic behavior of concrete. This means that the concrete undergoes plastic deformation after the stress level exceeds the elastic limit. The parabolic shape of the curve indicates that the rate of deformation increases with the increase in stress.
The rectangular-parabolic shape of the stress-strain curve for concrete is idealized because it assumes that the concrete is homogeneous and isotropic. In reality, concrete is a heterogeneous material, and its behavior varies depending on the composition, age, and other factors.
Conclusion:
In conclusion, the idealized stress-strain curve for concrete as prescribed by IS 456-1978 is a rectangular-parabolic curve. This curve represents the elastic and post-elastic behavior of concrete and is used in the design of reinforced concrete structures.
The idealized stress-strain curve for concrete as prescribed by IS 456-1978 is a rectangular-parabolic curve. This means that the curve is a combination of two shapes, a rectangular shape and a parabolic shape.
Rectangular Shape:
The rectangular shape of the stress-strain curve represents the elastic behavior of concrete. This means that the concrete behaves like an elastic material up to a certain stress level. At this stress level, the concrete starts to deform plastically.
Parabolic Shape:
The parabolic shape of the stress-strain curve represents the post-elastic behavior of concrete. This means that the concrete undergoes plastic deformation after the stress level exceeds the elastic limit. The parabolic shape of the curve indicates that the rate of deformation increases with the increase in stress.
The rectangular-parabolic shape of the stress-strain curve for concrete is idealized because it assumes that the concrete is homogeneous and isotropic. In reality, concrete is a heterogeneous material, and its behavior varies depending on the composition, age, and other factors.
Conclusion:
In conclusion, the idealized stress-strain curve for concrete as prescribed by IS 456-1978 is a rectangular-parabolic curve. This curve represents the elastic and post-elastic behavior of concrete and is used in the design of reinforced concrete structures.
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The shape of idealized stress-strain curve for concrete as prescribed ...
C) rectangular parabolic
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The shape of idealized stress-strain curve for concrete as prescribed by IS 456-1978 is:a)Rectangular.b)Parabolicc)Rectangular-Parabolicd)None of these.Correct answer is option 'C'. Can you explain this answer?
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