What is vermiculite?
This is a hydrous mineral undergoes great expansion when heated. A monolithic coating is adopted with a mixture of vermiculite as well as Portland cement to prevent fire. It is more preferred choice due to low density that will not lead the additional dead load to the steel structure and high durability.
Vermiculite steel coating is a hard and stable passive fire protection with a very thin thickness to steel structure, concrete frames and metal floors. Building protected with this spray can provide fire resistance for upto 280 mins. Building such as warehouse, educational, commercial, entertainment centers and factories can get benefit from such coatings.
Properties of the vermiculite spray should be:
· Colour – Off-white
· Density – 400km/m3
· Compressive strength – 560kPa
· Thermal conductivity – 0.0095W/mK at 20C
· Initial set – 2 to 6 hours at 20 degree Celsius and 50% RH
· pH value – 12.0 – 12.5
This fireproofing spray for Steel structure fireproofing is suitable for fire protection of structural steel columns, beams, cables and metal ducks and best to use fir both external and internal use and heat applications.
Vermiculite spray is available is 2 types: 1) internal and 2 ) external. Both grades are designed for installation by spray techniques and can be applied to bare steel exteriors in the thickness upto 30mn at a time.
This spray is versatile and also recommended for projects where other products are hard to apply. Vermiculite spray is suitable for thermal insulation of hot surfaces and is used in building boards that are often used as a central in fire door to boost or construct duct work to protect fire barriers. In railway stations, bus stations or any other crowed places, issues of fire safety are supreme. You must use fireproof materials to address these issues.
In addition to this, expanded vermiculite has distinct thermal stability as well as lack of toxicity at high temperature. It is great fireproofing material for fireproof plates. On the other hand side, inorganic vermiculite is not toxic and has great sound and thermal insulation features.
Vermiculite material is easy to install and processing and is available in vermiculite with the critical dimension. The board allows the HRP staining texture paint, plastic and veneer wood which greatly increases their quality as well as grows the scope of their application. In order to fire protection in the construction of steel structure, vermiculite is used.
It is used in the manufacture of false ceilings and walls, fire dampers, in ducks doors and wall panels. It is also used in the manufacture of fireproof furniture, in the wall of wooden structures, in the setting pits and conduits and in the construction of cars.
