Glass fiber reinforced cements and process for manufacture of same
AssigneeOwens-Corning Fiberglas Corporation
InventorErnst Dereser
Life of this patent
Estimating the term…
Abstract
A process and composition for use in the manufacture of fiber-reinforced cementitious products. In the preferred practice of the invention, glass fibers are coated with a size composition containing a finely divided inorganic material having a high surface area and a polyelectrolyte, and the resulting coated glass fibers are then laid down, along with a cement composition formulated to contain cement, the inorganic material and the polyelectrolyte, whereby water is removed from the cement composition to form a glass fiber reinforced cementitious product arranging to the Matschek or Magniani process.
Claims26
A fiber reinforced cementitious product comprising a cement as a continuous phase and fibers dispersed as reinforcement in the continuous phase, with said product including flocculating agent and a finely divided inorganic material having a surface area greater than 20 m.sup.2 /g present in (a) admixture with the cement, (b) as a size coating on the fibers or (c) both.
A glass fiber reinforced cementitious product comprising a cement as a continuous phase and glass fibers dispersed in the cement as reinforcement therefor, said cement being formulated to include a flocculating agent and a finely divided inorganic siliceous material having a surface area greater than 20 m.sup.2 /g, with the glass fibers having a size coating on the surfaces thereof, said coating comprising said flocculating agent and said inorganic material.
In a process for the manufacture of fiber reinforced cementitious products wherein fibers are mixed with a cementitious material to form a pulp, the pulp is contacted with a foraminous forming member from which water is withdrawn to form a green product and the green product is cured, the improvement comprising using a pulp in which one of the cementitious material and the glass fibers contains polyelectrolytes and a finely divided inorganic material having a high surface area.
In a process for the manufacture of glass fiber-reinforced cementitious products wherein glass fibers are mixed with a cementitious material to form a pulp, the pulp is contacted with a foraminous forming member from which water is withdrawn to form a green product and the green product is cured, the improvement comprising mixing glass fibers having a size coating thereon, said coating containing a polyelectrolyte and a finely divided inorganic siliceous material having a surface area greater than 20 m.sup.2 /g, with a cement composition containing cement, said polyelectrolyte and said inorganic material.
Dependencies are inferred from the claim text.