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Q: The shrinkage of concrete is due to change in
  • A. Length
  • B. Cross-sectional area
  • C. Volume
  • D. Surface area
Correct Answer: Option C - Concrete shrinks because of a loss in concrete volume and leads to cracking when base friction or other restraints occur it also causes curling and warping, which can lead to decreased load carrying capacity of the structural element.
C. Concrete shrinks because of a loss in concrete volume and leads to cracking when base friction or other restraints occur it also causes curling and warping, which can lead to decreased load carrying capacity of the structural element.

Explanations:

Concrete shrinks because of a loss in concrete volume and leads to cracking when base friction or other restraints occur it also causes curling and warping, which can lead to decreased load carrying capacity of the structural element.