Fiber cement board with modified fiber
AssigneeWeyerhaeuser NR Company
InventorsROBERT T. HAMILTON, David J. O'Callaghan, Hugh West
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Abstract
A building material product comprising a cementitious binder, an aggregate and cellulose reinforcing fibers wherein the cellulose reinforcing fibers have been treated with oil which is bound to the fiber by a retention aid. The resulting fiber when included in a fiber cement composite results in improved deflection of the composite at peak loading as well as improved impact strength while maintaining overall board strength.
Claims10
A building material product comprising a cementitious binder, an aggregate and cellulose reinforcing fibers wherein the cellulose reinforcing fibers have been treated with oil which is bound to the fiber by a retention aid.
A building material product comprising a cementitious binder, an aggregate and cellulose reinforcing fibers wherein the product has a flexure extension at maximum load of greater than 20 mm.
A building material product comprising a cementitious binder, an aggregate and cellulose reinforcing fibers wherein the product has a maxium flexure extension of greater than 30 mm.
Dependencies are inferred from the claim text.