With the characteristics of light weight

excellent mechanical performance

heavy load bearing capacity

and high level of mechanization during production and installation

steel was widely used in modern construction.With the development of city urbanization

there would be a widespread prospect in construction industry in China.However

the fire resistance of steel is poor.With high temperatures in fire

its mechanical properties

such as yield strength and elastic modulus

decrease as the temperature rises.Usually it would collapse for losing the load-bearing capacity in 15 minutes or so.Thus

in order to maintain the stability of steel in fire

corresponding measures need to be taken to prevent temperature rising over the critical temperature.Fireproofing paint has good economic and practical performance including light-weighted

long fire duration

convenient for application

and without the constraint of the geometry of steel.With the increasing environmental awareness

more and more domestic and foreign builders advocate green building concept and participate in Three Star′s rating system or LEED certification.The water-borne intumescent fireproofing coat

which is eco-friendly

safe and effective in fire

began to get the favour of owners and designers.In this paper

from aspects of fire protection principles

technical characteristics

certification

application

and quality supervision

the performance and development of water-borne intumescent fireproof coating were discussed.The current problems of fireproof coating were also pointed out for attention.