Fiber cement composite material using biocide treated durable cellulose fibers

The fibrous cement composite material provides better rot resistance and durability, the composite material incorporates biocide-treated fibrous pulps to resist attack by microorganisms. Biocide-treated fibers have biocides attached to the inner and outer surfaces of individualized fibers to protect the fibers against attack by fungi, bacteria, mold, and algae. The selected biocides have a strong affinity for cellulose and do not interfere with the hydration reactions of cement. This document further describes the formulation, manufacturing method, and end products of fibre cement by using biocide-treated fibers. The fiber-reinforced building composite comprises a cement matrix, and individualized cellulose fibers incorporated into the cement matrix, in which the cellulose fibers are treated, at least partially, with a biocidal chemical agent that inhibits growth of microorganisms within the fibers. The material formulation used to form the fiber-reinforced construction composite material comprises a cement binder, and cellulose fibers, in which the cellulose fibers have been individualized and where at least some of the cellulose fibers they are treated with a chemical agent to inhibit the growth of microorganisms on the fibers. The method of manufacturing a fiber-reinforced composite construction material comprises: supplying individualized cellulose fibers; treating at least a portion of the cellulose fibers with a chemical agent, where the chemical agent inhibits the growth of microorganisms on the treated cellulose fibers; mixing the treated fibers with a cement binder to form a fibrous cement mixture; forming the fibrous cement mix to obtain a fibrous cement article of a pre-selected size and shape; and curing the fibrous cement article so that the fiber-reinforced construction composite is formed. In the fiber-reinforced building material incorporating the cellulose fibers, at least a portion of the fibers is treated with a biocide to prevent the growth of microorganisms within the fibers.