EXPANSION JOINTS IN BUILDING

O EXPANSION JOINTS INSULATION

Expansion joints, essential to accommodate movement of architectural element, are formed in the process of leaving a building or light opening in the whole section of the structure in which two elements converge. These openings are filled by elastic sealing that allow movements of expansion and contraction of the elements of the structure.

Expansion joints designed to allow movement of structural materials, their use in building permits provide the structure of a suitable insulation against different agents that cause movements of contraction and expansion such as temperature changes not only in the different seasons but also the temperature differences throughout the day, or the wind that affects mainly the tallest buildings.
Expansion joints prevent water, dirt and air to penetrate into the building structure.

Expansion joints or insulation slabs also known as control are added to the concrete slabs to separate and isolate slabs from other parts of the building structure as walls, foundations, Aislamiento Térmico thus allowing independent vertical and horizontal movements of the different adjacent parts of the building structure helping to minimize cracking when these movements are discrete.

There are two reasons why isolation joints or expansion require to be rehabilitated: the loss of elasticity or damage to the edges of the expansion joint, resulting in both cases the loss of insulation needed so the penetration is facilitated water, dirt or wind. If the edges of the expansion joint are damaged will be necessary, in most cases, as a first step the removal of the sealing material deteriorated and then proceed with the repair and reconstruction of the edges of the expansion joint. It is also recommended to provide an expansion joint terminal layer to increase the impact resistance and abrasion to ensure the least possible wear and ensure optimum effectiveness and long-term result of the expansion joint or isolation.

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