Q. For cement concrete, the stress-strain curve is approximately linear upto
Solution:
- Initially, all stress strain curves are fairly straight; stress and strain are proportional.
- With this stage, the material should be able to retain its original shape if the load is removed.
- The elastic range of concrete stress – strain curve continues up to 0.45fc? (maximum concrete compressive strength).
- It is half of the ultimate stress.
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