Geopolymer-modified, gypsum-based construction materials
AssigneeHera, LLC
InventorBill E. Laney
Life of this patent
Estimating the term…
Abstract
Geopolymer-modified gypsum construction materials. Compositions derived from combining geopolymer adhesives with conventional gypsum wallboard slurry formulations produce an interpenetrating network (IPN) which cures by loss of process water to a refractory solid having improved fire and water resistance. Geopolymer adhesive starting compositions includes soluble and insoluble silicates, buffers and salts, and a chemical setting agent in aqueous suspension.
Claims24
Gypsum wallboard materials having improved fire and water resistance produced from combining a self-hardening mixture comprising a geopolymer adhesive with a gypsum wallboard slurry, wherein said geopolymer adhesive comprises 43%-65% of soluble alkali metal silicate solution, 0.0%-0.4% of a pH-lowering and buffering agent, 1.3%-15.7% of a chemical setting agent for said soluble alkali metal silicate, 5.2%-23.6% of a strengthening agent, 11%-16% water, and 0.0%-16% of a thickening agent.
Gypsum wallboard materials having improved fire and water resistance produced from combining a self-hardening mixture comprising commercially-utilized gypsum wallboard slurry and a geopolymer adhesive, said geopolymer adhesive comprising 43.0%-65.0% of soluble alkali metal silicate solution, 0.0%-16% of a thickening agent, 5.2%-23.6% of a strengthening agent, 11%-16% water, and 1.3%-15.7% of a chemical setting agent for said soluble alkali metal silicate solution.
A method for producing gypsum wallboard materials having improved fire and water resistance, said method comprising the steps of:
- a. combining a self-hardening mixture comprising commercially-utilized gypsum wallboard slurry with a geopolymer adhesive, said geopolymer adhesive comprising 43%-65% of soluble alkali metal silicate solution, 0.0%-16% of a thickening agent, 5.2%-23.6% of a strengthening agent, 11%-16% water, and 1.3%-15.7% of a chemical setting agent for said alkali metal silicate solution;
- and
- b. permitting the mixture resulting therefrom to harden.
Dependencies are inferred from the claim text.