Answer / er. shivam dixit

construction joints are provide at the end of days work by
means when days work is end then the joints are provided for
next day work is known as construction joints.

contraction joints are those joints which are provided for
shrinking action of concrete.

Expansion joints are provided for thermal expansion

Answer / souvik sadhukhan

construction joints are the joint provided to joint the next portion of the portion of the wall , slab or column etc.
expand joint are provided for tharmal expantion.

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