Abstract: A building material product comprising a cementitious binder, an aggregate and cellulose reinforcing fibers wherein the cellulose reinforcing fibers have been treated with cationic or nonionic oil. 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.
May 29, 2009
Date of Patent:
November 27, 2012
Weyerhaeuer NR Company
Robert T Hamilton, David J O'Callaghan, Hugh West