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Constrction compression seals
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Expansion joints are placed in concrete to prevent expansive cracks formed due to temperature change. Concrete
undergoes expansion due to high temperature when in a confined boundary which leads to cracks.
Expansion joints are provided in slabs, pavements, buildings, bridges, sidewalks, railway tracks, piping systems, ships,
and other structures.
This article emphases on need of expansion joint in concrete, characteristics of expansion joints, types of expansion
joint and installation of expansion joints.
Concrete is not an elastic substance, and therefore it does not bend or stretch without failure. However, concrete
moves during expansion and shrinkage, due to which the structural elements shift slightly.
To prevent harmful effects due to concrete movement, several expansion joints are inc
