BE405486A - Improvements to coatings for railway car floors, ship decks and other coatings - Google Patents

Description

       

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Improvements to the floors of road cars

  
iron, boat decks and other floors.

  
This invention relates to car floors

  
railways, boat decks and other floors

  
which feature a metal frame covered with &#65533; a dream '

  
carefully applied in one or more coats. For the maintenance

  
in good condition of these floors, it is of primary importance

  
that the metal frame is not exposed to being eroded

  
by oxidation. The coating must also adhere int:

  
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its detachment, it cracks and the floor falls apart.

  
Until now, we were content to briefly protect the metal frame against oxidation by a

  
bitumen-based varnish applied to the metal. This m

  
protection offers the double disadvantage of being precarious

  
&#65533;

  
due to the alterability and fragility of the varnish layer, and to accentuate the lack of adhesion of the coating

  
to the frame. When the coating is composed of a mixture of cellulosic and mineral materials agglomerated by a solution of magnesium chloride, the acidity resulting from the decomposition of the chloride in contact with humid air attacks the metal of the reinforcement poorly protected by the varnish. Also, when the covering consists of a layer of cork glued to the frame and covered with linoleum or similar material, the washing water passing through the joints of the linoleum impregnates the cork and oxidizes the metal in the unprotected or poor places. protected by varnish.

  
According to the present invention, both effective protection of the reinforcement against oxidation and perfect adhesion of the coating to the reinforcement is ensured by placing on this metal reinforcement a lower layer of insulating material, neutral and relatively elastic with the addition of fibers serving as binder, then an intermediate layer impermeable to water and to acids, constituted for example by a bitumen varnish, and finally an upper wear layer of magnesian cement, linoleum, rubber or other material.

  
As the material constituting the lower layer, directly in contact with the metal frame and intended to protect the latter, cellular concrete, pumice concrete, fossil silica concrete or a similar material are used with advantage, as a mixture. with asbestos fibers to provide resistance to extension and prevent cracking. In addition to its protective action, the lower layer thus formed has the advantage of perfectly adhering to the metal frame with which it cooperates to increase the rigidity of the floor as well as its resistance to compression and traction. In addition, the coating is light and thermally and acoustically insulating.

  
The coating according to the invention is applicable to all types of metal reinforcements such as sheets.

  
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CLAIMS

  
1.- Floor with metal reinforcement, in particular vehicle floor or boat deck, characterized in that the reinforcement is covered directly with a layer of inorganic material, neutral, light, insulating and relatively elastic mixed with fibers serving of binder, which lower layer is separated by an intermediate layer impermeable to water and acids, from an upper wear layer of magnesian cement, linoleum, rubber or other material.


    

Claims (1)

2.- Floor according to claim 1, characterized in that the lower layer covering the metal frame. that consists of cellular concrete, pumice concrete, fossil silica betoi or similar concrete, mixed with asbestos fibers. 3.- Floor with metal frame protected against oxidation, in substance as described above.