3-MODE BLENDED FIBERS IN AN ENGINEERED CEMENTITIOUS COMPOSITE

摘要

Disclosed herein are fiber reinforced cement composite materials incorporating a 3-mode fiber blend that includes cellulose pulp and synthetic fibers in a ratio selected to provide the composite material with improved water absorption characteristics and the same or improved mechanical properties as compared to equivalent composite materials reinforced with predominantly or all cellulose fibers. Also disclosed herein are fiber blends comprised of a combination of cellulose fibers and polypropylene fibers adapted to reinforce cementitious composite articles manufactured by the Hatschek process and autoclave cured.

主权项

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%-10% additives; and about 0.5%-20% by weight a 3-mode fiber blend, said fiber blend comprising short and high surface cellulose fiber, medium length and surface cellulose fiber and long and low surface synthetic fiber.