Patent ID: 9388076
Filing Date: 2016-07-12
CPC Classification: B28B,C04B,Y02A,Y02W

Claim Text:
1. A fiber cement composite material, comprising: about 10%-80% by weight cementitious binder; about 20%-80% by weight silica; about 0%-50% by weight density modifier; about 0%40% additives; and about 0.5%-20% by weight of a 3 mode fiber blend that comprises refined shorter cellulose fibers, unrefined cellulose fibers, and long polypropylene fibers, wherein the average length of the refined shorter fibers is less than the average length of the unrefined cellulose fibers, and wherein the average length of the long polypropylene fibers is greater than the average length of the unrefined cellulose fibers.