Fire resistant coating
AssigneeGeopolymer Solutions LLC
InventorRodney Zubrod
Life of this patent
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Abstract
A density controlled cold fusion concrete cementitious spray applied fireproofing material including a mixture of water, one or more of silicon dioxide, expanded glass, vermiculite, bottom ash, perlite, expanded shale, expanded polystyrene, and sulfonated formaldehyde, or other lightweight aggregates of various diameter sizes ranging from about 0.025 mm to about 12.5 mm in diameter; anhydrous or hydrous sodium or potassium metasilicate; waste from steel production consisting of Granulated Ground Blast Furnace Slag (GGBFS); high calcium or low calcium waste from coal combustion (fly ash or bottom ash); sodium tetraborate, sodium citrate dihydrate, citric acid, or boric acid; and an alkali-resistant micro-fiber.
Claims30
A fire-resistant, geopolymer coating composition that is free of Portland cement and which exhibits a predetermined equilibrium density within the range from about 15-60 pounds per cubic foot and a compressive strength within the range of 200-3000 psi, said composition comprising:
- 15-50 wt % of at least one lightweight aggregate having a bulk specific gravity of less than 1.0 and a diameter ranging from about 0.025 mm to about 12.5 mm;
- 5-60 wt % of at least one alkali-activated, cementitious material;
- 2-15 wt % of at least one activator for said alkali-activated, cementitious material;
- 0-15 wt % of at least one set-time retardant;
- 0.01-5 wt % of at least one alkali-resistant fiber;
- 0-2 wt % of magnesium oxide in an amount sufficient to control shrinkage in said mixture when cured;
- 0-4 wt % of a water reducer;
- 0-5 wt % of a protein or synthetic protein material;
- 0-4 wt % of a rheology enhancer;
- and
- water.
Dependencies are inferred from the claim text.