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Q: Which of the following is TRUE regarding stress-strain curve of concrete?
  • A. A straight line up to the failure.
  • B. Hyperbolic up to 0.002% strain value and then a straight line up to failure.
  • C. Parabolic up to 0.002% strain value and then a straight line up to failure.
  • D. Straight line up to 0.002% strain value and then parabolic up to failure.
Correct Answer: Option C -
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Explanations:

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