Back وصلة تمدد Arabic Junta de dilatació Catalan Dilatace (stavebnictví) Czech Dehnfuge German Junta de expansión Spanish اتصال انبساطی Persian Liikuntasauma Finnish Joint de dilatation French Sambungan siar muai ID エキスパンションジョイント Japanese
A expansion joint, or movement joint, is an assembly designed to hold parts together while safely absorbing temperature-induced expansion and contraction of building materials. They are commonly found between sections of buildings, bridges, sidewalks, railway tracks, piping systems, ships, and other structures.
Building faces, concrete slabs, and pipelines expand and contract due to warming and cooling from seasonal variation, or due to other heat sources. Before expansion joint gaps were built into these structures, they would crack under the stress induced.