Hydrated fibrous mats
First Claim
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1. A method of curing cement or concrete comprising:
- coating said cement or concrete with at least one layer of a curing composition including cellulose fibers, water, a viscosity enhancing polymer and a hygroscopic swelling agent in amounts effective to retain water on the surface of said cement or concrete and to slow the rate of drying of said curing cement or concrete and wherein the amount of said polymer is effective to enhance the cohesiveness of the composition.
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Abstract
The present invention relates to methods to protect curing cement or concrete from excess evaporative water loss and/or from rain, excess heat loss, or excess heat gain. More particularly the method relates to coating curing cement or concrete with a layer (or layers) of a fibrous mass composed of ground cellulose, water, a viscosity enhancing polymer, a hygroscopic swelling agent and, optionally, additives selected on the basis of the properties desired (e.g., rain resistance, heat absorption from the sun, heat reflectance, or heat insulation). The invention also relates to compositions comprising a layer of cement or concrete and a layer (or layers) of such a fibrous mass.
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Citations
27 Claims
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1. A method of curing cement or concrete comprising:
- coating said cement or concrete with at least one layer of a curing composition including cellulose fibers, water, a viscosity enhancing polymer and a hygroscopic swelling agent in amounts effective to retain water on the surface of said cement or concrete and to slow the rate of drying of said curing cement or concrete and wherein the amount of said polymer is effective to enhance the cohesiveness of the composition.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 25, 26)
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20. A method of curing cement or concrete comprising:
- coating said cement or concrete with
(a) a first layer of a curing composition including cellulose fibers, water, a viscosity enhancing polymer and a hygroscopic swelling agent in amounts effective to retain water on the surface of said cement or concrete and to slow the rate of drying of said curing cement or concrete, (b) a second layer of an insulative composition including a viscosity enhancing polymer and cellulose fibers selected from the group consisting of ground polyethylene coated cardboard, urea-formaldehyde impregnated cardboard, and mixtures thereof, and (c) at least one additional layer of a curing composition including cellulose fibers, a hydrophobic polymer and a hygroscopic swelling agent. - View Dependent Claims (21)
- coating said cement or concrete with
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22. A cement or concrete composite comprising:
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a layer of cement or concrete, and least one outer layer of a curing composition including cellulose fibers, water, a viscosity enhancing polymer and a hygroscopic swelling agent in amounts effective to retain water on the surface of said cement or concrete and to slow the rate of drying of said curing cement or concrete. - View Dependent Claims (27)
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23. A cement or concrete composite comprising:
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(i) a first layer of cement or concrete, (ii) a second layer of a curing composition including cellulose fibers, water, a viscosity enhancing polymer and a hygroscopic swelling agent in amounts effective to retain water on the surface of said cement or concrete and to slow the rate of drying of curing cement or concrete, (iii) a third layer of an insulative composition including a viscosity enhancing polymer and cellulose fibers selected from the group consisting of ground polyethylene coated cardboard, urea-formaldehyde impregnated cardboard, and mixtures thereof, and (iv) at least one additional layer of a curing composition including cellulose fibers, a hydrophobic polymer and a hygroscopic swelling agent. - View Dependent Claims (24)
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Specification