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Q: The surface where two successive placements of concrete meet are known as
  • A. Contraction joint
  • B. Expansion joint
  • C. Construction joint
  • D. both Contraction joint and expansion joint
Correct Answer: Option C - The construction joints are provided at locations where the construction is stopped either at the end of the day or for any reason. The provision of a construction joint becomes necessary to ensure proper bond between the old work and the new one. The construction joints may be horizontal or vertical.
C. The construction joints are provided at locations where the construction is stopped either at the end of the day or for any reason. The provision of a construction joint becomes necessary to ensure proper bond between the old work and the new one. The construction joints may be horizontal or vertical.

Explanations:

The construction joints are provided at locations where the construction is stopped either at the end of the day or for any reason. The provision of a construction joint becomes necessary to ensure proper bond between the old work and the new one. The construction joints may be horizontal or vertical.