Fire resistant wall construction
AssigneeHadak Security AB
InventorKrister Kallstrom
Life of this patent
Estimating the term…
Abstract
A fire resistant wall construction incorporating a phase conversion material the phase conversion of which takes place at a temperature below the temperature at which wood, paper etc. is liable to ignite. The phase conversion material includes a mass (2) produced from a mixture of water-glass in liquid phase and water and a binder such as cement or the like, the phase conversion material having a water content of such magnitude that the endothermic reaction taking place during the phase conversion process is essentially constituted by the vaporization of the water present.
Claims11
A fire resistant wall construction incorporating a phase conversion material, the phase conversion of which takes place at a temperature lower than that at which material such as wood, paper and the like will ignite, characterized in that the phase conversion material includes a mass produced from a mixture of water-glass in liquid phase and water and a binder, such as cement or the like, said phase conversion material having a water content such that the weight of the free water added exceeds the total weight of the water-glass and cement, but is less than approximately three times said total weight of the water-glass and cement, said phase conversion material having a water-glass content such that the weight of the water-glass is approximately equal to or greater than the weight of cement, but is lower than approximately 2.5 times the weight of the cement, which phase conversion material has a water content of such magnitude that the endothermic reaction taking place during the phase conversion process is essentially constituted by the vaporization of the water present, and in that the phase conversion material (2) is enclosed in an impervious enclosure.
Dependencies are inferred from the claim text.