This study investigates the effect of gypsum to theperformance of intumescent coating.
Intumescent or fire retardant coatings are one of the most efficient ways to protect
materials against fire. In fact, it is generally known that acid source, carbon source,
binding agent and blowing agent are the main ingredients of such a paint. Inthis project
work, effect of using gypsum as additive in intumescent coating were investigated by
performing fire test to sample coated with certain intumescent coating composition and
by using Scanning Electron Microscope (SEM). All the results indicated that gypsum
can increase fire retardation time which means intumescent coating modified with
gypsum can withstand higher temperature and can last for longer time. This study and
improvement of intumescent coating will help the constructions industry by producing
better intumescent coating
