Application and problems of extruded polystyrene insulation board in the construction of Laxiwa Hydropower

The poor flame retardant and adhesive problems of extruded polystyrene insulation board(XPS),which exposed permanently to surfaces,in the insulation engineering of the Laxiwa main dam project were analyzed,Solutions to improve the fire-resistant properties of materials,optimize the material structure,design composition and strengthen organization and management of fire prevention in the construction process were proposed.