Patent ID: 7601234

Claim:
A method for producing an engineered building material comprising at least a first and second cementitious reinforced expanded honeycomb product, said method comprising: contacting at least a first side of at least one expanded honeycomb material with a semisolid or liquid cementitious material, wherein the cementitious material fully fills said at least first side of the expanded honeycomb material, thereby forming at least one integrated honeycomb/cementitious product; curing said integrated honeycomb/cementitious product, thereby forming said cementitious reinforced expanded honeycomb product; and affixing at least one end of said first cementitious reinforced expanded honeycomb product to at least one end of said second cementitious reinforced expanded honeycomb product via a coupler device, wherein said expanded honeycomb product comprises at least one material selected from the group consisting of: high impact polystyrene, polycarbonate, acrylonitrile butadiene styrene, homo- or co-polymer polypropylene, low or high density polyethylene, and any combinations thereof.