Lightweight single-use concrete curing system
OwnerNigel Parkes, Russell Boxall +2inventors
InventorsNigel Parkes, Russell Boxall, Philip Edward Harris, Richard James Bilton
Life of this patent
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Abstract
A lightweight concrete curing blanket includes a layer of nonwoven fabric that is hydrophilic and that has a thickness of less than about 0.020 inches. A layer of film (e.g., polyethylene film) is bonded to the layer of nonwoven fabric, and has a thickness less than or equal to about 0.001 inch. The layer of film has a moisture vapor transport rate of less than about 0.0016 grams per square foot per twenty-four hours. A combined weight of the layer of nonwoven fabric and the layer of film is less than about 100 grams per square meter.
Claims21
A concrete curing system comprising:
- a film backing layer having a first surface and a second surface, the film backing being a thermoplastic impermeable to moisture;
- a nonwoven fabric layer, said fabric comprised of a mixture of polyester and rayon fibers, said fabric having a first surface and a second surface;
- an adhesive securing the second surface of the film backing layer to the first surface of the fabric layer.
A concrete curing system comprising:
- a polyethylene film backing impermeable to moisture having a first surface and a second surface and a thickness of less than 3 mils;
- a spunlaced, needlepunched or carded nonwoven polyethylene and rayon fabric, said fabric comprised of a mixture of at least 30% polyester fibers and at least 30% rayon fibers, said fabric having a first surface and a second surface;
- an ultraviolet light stabile adhesive securing the film backing to the fabric.
A concrete curing blanket, comprising:
- a layer of nonwoven fabric, wherein the layer of nonwoven fabric comprises polyester, rayon, and lyocell, and wherein the layer of nonwoven fabric has a thickness of less than about 0.050 inches;
- and
- a layer of film laminated to the layer of nonwoven fabric, wherein the layer of film has a thickness less than about 0.003 inch.
A method of curing concrete, comprising:
- pouring a slab of concrete, wherein the concrete slab has an exposed surface;
- flooding the concrete surface with water;
- covering the concrete surface and water on the surface with a concrete curing blanket, wherein the concrete curing blanket comprises:
- a layer of nonwoven fabric, wherein the layer of nonwoven fabric comprises rayon, and lyocell, and wherein the layer of nonwoven fabric has a thickness of less than about 0.050 inches;
- and
- a layer of film laminated to the layer of nonwoven fabric, wherein the layer of film has a thickness less than about 0.003 inch;
- and
- allowing the concrete to cure for a predetermined period of time.
Dependencies are inferred from the claim text.