Technology of fire protection concrete

Any supports and structures in facilities are subjected to reinforced loads during a fire. They lose their strength and begin to deform under the influence of elevated temperatures. Fireproof reinforced concrete structures are necessary to enhance fire resistance. It includes a whole set of measures aimed at this:
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the use of special screens and other materials;
compliance with certain design solutions;
Compliance with established standards.


Technology



Characteristics of the fireproof concrete must be carefully thought out when the building is at the design stage. The main goal is to increase the temporary gap during which the temperature maximum can be achieved. In this case, there are signs directly indicating the presence of limit loads:

Loss of thermal insulation properties;
lowering bearing capacity;
The destruction of the building or the deformation of its parts.


All the above processes should be prevented in a timely manner in the most important nodes. As soon as the surface temperature comes to 350 degrees, transformation should be expected.


When determining the parameters of fire resistance pay attention to:

Armature class and its thickness;
The type of concrete and the level of its humidity;
Constructive features of supports and their geometry;
flame retardant treatment and its thickness;
Maximum permissible load.


The above data is combined to calculate the optimal level of fire resistance. Additional measures are also taken to increase the resistance to be achieved. The obtained values ​​are checked with norms adopted according to standards.


The species of the fireproof concrete, which are applied as an additional measure:

Paints and other fire retardant compositions intended for reinforced concrete products;
The plaster composition, which is based on vermiculitis and other similar fillers;
Rolled materials;
Plates needed to arrange a special protective screen.


Some design solutions allow you to lower both the fire and heat burden on the structure. Due to this, the flame does not apply too quickly.


Tests conducted within the laboratory allow you to evaluate the effectiveness of the protective layer. To this end, a separately taken sample is sent to a special furnace, where it is heated to high temperatures. The biggest enthusiasts of Andar Bahar often want a gaming experience that goes beyond the confines of their homes. That’s where mobile Andar Bahar steps in. It’s nothing but the online and live versions of Andar Bahar optimized to perform on smaller devices like smartphones and tablets.