Cement matrix composites and method of making same
AssigneeE. I. Du Pont de Nemours and Company
InventorsDavid M. Gale, Hyunkook Shin
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Abstract
Cement matrix composites of improved flexural toughness are prepared with polyethylene fibrids of high orientation from plexifilamentary structures as reinforcement.
Claims7
A method for preparing a cement matrix composite reinforced at least in part with polyethylene pulp which comprises, making an aqueous slurry of Portland cement and a pulp of oriented polyethylene fibrids having a birefringence of at least about 0.030 and prepared from a plexifilamentary structure, depositing the slurry on a porous surface, dewatering the slurry and curing the composite.
A cement matrix composite reinforced at least in part with a pulp of oriented polyethylene having a birefringence of at least about 0.030, said pulp constituting from 0.1 to 10% by weight of the composite.
Dependencies are inferred from the claim text.