초록 ▼

A building material includes a layer of a first cured material and a layer of a second cured material interlocked with the first material. Each cured material includes a mixture of (a) fibers made from a light-weight material (e.g. cellulose), (b) a material (e.g. cement) curable to produce interlin

A building material includes a layer of a first cured material and a layer of a second cured material interlocked with the first material. Each cured material includes a mixture of (a) fibers made from a light-weight material (e.g. cellulose), (b) a material (e.g. cement) curable to produce interlinked molecules bound to the fibers and (c) particles of a material (e.g. sand) for tempering the cured material. The weight per unit volume of cellulose in the first material is greater, and the weight per unit volume of cement (or sand) is less, than the respective weights per unit volume of cellulose and cement (or sand) in the first material. The second material may constitute a compressive member when cured. A porous (non-woven) tensile member is adhered to the first layer at the face opposite the second layer to maintain the layers under tension in a particular configuration. A thin layer of a material (e.g. fiberglass strands) providing enhanced strength and resistance to bending and cracking may be adhered to the tensile member. A thin layer of a material (e.g. aluminum) may be adhered to the fiberglass to localize and reflect heat applied to the building material. The tensile member is initially disposed above a surface providing for a drainage, of water through the tensile member. The first and second materials are then individually mixed with an excessive amount of water. The first layer is disposed on the tensile member while wet and the second wet layer is disposed on the first wet layer. Excess water is then drawn from the layers. The fiberglass strands may thereafter by applied to the tensile member and the aluminum may be applied to the fiberglass strands.

대표청구항 ▼

In combination in a building material, a first layer including a cured mixture of cellulose fibers, sand and cement, each of the cellulose fibers and the sand constituting approximately twenty percent (20%) by weight in the cured mixture and the cement constituting the remainder of the mixture, and

In combination in a building material, a first layer including a cured mixture of cellulose fibers, sand and cement, each of the cellulose fibers and the sand constituting approximately twenty percent (20%) by weight in the cured mixture and the cement constituting the remainder of the mixture, and a second layer integral with the first layer and including a cured mixture of sand, cellulose fibers and cement, the sane constituting approximately thirty five percent (35%) by weight in the mixture and the cellulose fibers constituting approximately five percent (5%) by weight in the mixture and the cement constituting the remainder of the mixture.