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US 4,338,135 AGranted
Microwave curing of cementitious material
AssigneeTexas Industries, Inc.
InventorHilbert F. Cook
Life of this patent
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Abstract
A method for manufacturing cementitious products are provided in which microwave radiation energy is applied to cementitious products that have been at least partially cured by a moist curing method such as low pressure steam, water vapor or autoclave curing. Microwave radiation energy applied is sufficient to provide rapid cure completion and drying of the cementitious material.
Claims11
A method of manufacturing cementitious product which comprises:
- (a) forming the product from uncured cementitious material;
- (b) moist curing the product while maintaining said product free of liquid water by one of low pressure steam, water vapor or autoclave curing for a period sufficient to achieve at least the substantial hydration of said cementitious material;
- and
- (c) thereafter applying microwave radiation energy to said cementitious material for rapid cure completion and drying.
1 more element
A method of curing cementitious material which comprises:
- (a) moist curing the material while maintaining said material free of liquid water by one of low pressure steam, water vapor and autoclave curing for a period sufficient to achieve at least a substantial hydration of the cementitious material;
- and
- (b) thereafter applying microwave radiation energy to the cementitious material for rapid cure completion and drying.
Dependencies are inferred from the claim text.