Acid resistance 1 Aluminum hydroxide 1 Burn-through 1 Calcite 1 Calcium carbonate 1 Coatings 1 Extruded polystyrene(XPS) 1 Fire resistance 1 Fire resistance test 1 Fire tests 1 Flame-retardancy 1 Geopolymer 1 Geopolymers 1 Heat resistance 1 Inorganic polymers 1 Metal substrates 1 Non-metallic 1 Non-metallic substrates 1 Substrate material 1 Test durations 1 X ray photoelectron spectroscopy 1 coatings 1 fire resistance test 1 flame retardancy geopolymer 1 non-metallic substrate 1