Passive intumescent coating

In the preceding sections, various passive fire protection methods have been discussed. Practical applications have been demonstrated for CS board, VP based mortar, intumescent coating. In general, it can be concluded that passive protection methods are effective in reducing heat release, smoke, and toxic gas production, and can limit the participation of the contribution of the component to the fire. These are indeed critical issues, but for multiple-story buildings, the issue of structural fire endurance is also important. It was shown that these passive methods with certain thickness of the protective layer can prolong the structural endurance time by maximum 100% for FRP components with a flange thickness of less than 10 mm on the fire side. 

The srtfificient increase in fire safety of fiberglass constructions may be achieved by using the passive protection measttres—applying flame retardant intumescent coatings. 

Passive protection can be used to increase the time to structural failure. For example, intumescent mastic coatings of less than 1 inch thickness have been shown to provide up to 4 hours of fire resistance when applied to steel columns. Cementitious materials have been shown to provide 1-4 hours fire resistance for thicknesses of 2.5-6.3 cm (1-2.5 in). For additional information on passive fire protection, see Chapter 7. 

A glass composite panel with fire-retardant resin and wood core was developed for a coal mine Safe Room system as a rescue chamber for miners trapped underground [29]. In addition to using fire-retardant resins and intumescent mats integrated into the structural composite reinforcements, the coal mine Safe Room system will be coated with intumescent latex, a thin passive fire barrier to further enhance its fire-rating capacity. 

C Passive fire barrier coating, Water-based latex paint, No halogenated compounds Intumescent Failed Failed... 

---