Answer / sanjeev786

A construction joint is required to allow the structure to
be built. Say there is an existing structure in the way of a
wall. Part of the wall is built, then later the existing bit
is removed, and the rest of the wall constructed. The place
where the first and second parts of the wall meet is a
construction joint. This kind of joint is usually built so
that no movement is allowed.

An expansion joint is one that allows movement between the
two elements. There will be a comparitely soft material,
such as rubber, asphalt or impregnated board placed between
the parts. If it is concrete construction, any reinforcing
bars will be arranged to allow movement. In most cases, if
movement was prevented, the structure would crack or buckle.
The joint allows controlled movement.

Answer / selvaraj

In constructed joints two successive concrete come together.chemical bonds such type of material wil be used to the concrete joining.
Where structure length 45m or above one or more joints provided in structure.that joint is known as expansion joint.to protect thermal heat we are provide sealent,rubber and so on for expansion and contraction purpose.

Answer / manoj kumar bhola

EXPANSION JOINT IS GIVEN TO THE STRUCTURE DUE TO TEMPERATURE STRESS AND CONSTRUCTION JOINT GIVEN AFTER THE COMPLETE OF DAY JOB WORK,L/3 OF THE SPAN.

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