Worth to know

Expansion joints - an important element of floors

Worth to know

> Expansion joints – an important element of floors

Expansion joints - an important element of floors

Aleksander

25/01/2018

One of the elements of concrete floors that are most often damaged are expansion joints, also known as expansion joints. Since they get damaged so often, are they even needed?

Dilation – why do I need this detail?

Expansion of concrete floors is necessary to ensure the proper operation of the concrete slab and to prevent structural cracks. We make dilatations by cutting concrete to 1/3 or 1/4 of the thickness of the industrial floor. In the depth of the dilatation cut, the floor cracks. This is what it is supposed to be – concrete will crack anyway, with the difference that through dilatations we “crack concrete” where we want, not where “concrete wants”.

In order to protect the expansion joints against dirt and water that may get to them during the cleaning of the floors, after the concrete slab has dried, the expansion joints are filled with an expansion cord and a permanently elastic mass. It is a special dilatation putty that will work together with the floor. Unfortunately, polyurethane putty is not as durable as a concrete surface and it wears out over time, peels off, peels off, and shrinks partially. In normal, everyday use, the floor simply wears out.

“Yellow card” – a time of reflection and action

The first cavities appear and this is the most dangerous moment. Each loss in the dilatation weakens it and exposes it to breakage of concrete chunks at its edges, chipping and chipping of the concrete slab. This causes numerous difficulties in working in the warehouse, exposes the user to additional costs and threatens the safety of employees.
In warehouse halls, where there is a lot of traffic of vehicles, forklifts, and in particular pallet trucks, such losses damage the wheels of the trucks. Replacing these elements is very expensive and frequent. Not only the tires themselves are damaged, but even the rims and axles of the bogies. After calculating the expansion joint repair, it often turns out that the procedure is less expensive than the need to repair the equipment moving around the hall.

The conclusions are simple, if the expansion joints are provided on the floor – they should be taken care of, and in case of damage, repaired as soon as possible.

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