Void free electrical cement-concrete
First Claim
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1. A method of producing electrical insulation grade concrete which comprises mixing aggregate, cement and an amount of an aqueous liquid in excess of the amount necessary to cause hardening of the concrete and sufficient to substantially reduce the viscosity of the mixture, applying a vacuum to the resulting mixture sufficient to remove entrained air therefrom, and thereafter removing the excess amount of aqueous liquid under vacuum.
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Accused Products
Abstract
Electrical insulation grade concrete is prepared by mixing the aggregate and cement with an excess of water and thereafter vacuum deaerating and vacuum dehydrating the resulting mixture.
48 Citations
9 Claims
- 1. A method of producing electrical insulation grade concrete which comprises mixing aggregate, cement and an amount of an aqueous liquid in excess of the amount necessary to cause hardening of the concrete and sufficient to substantially reduce the viscosity of the mixture, applying a vacuum to the resulting mixture sufficient to remove entrained air therefrom, and thereafter removing the excess amount of aqueous liquid under vacuum.
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Current AssigneeBrown Boveri Electric Incorporated (ABB Limited)
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Original AssigneeGould, Inc. (Transdigm Group Incorporated)
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InventorsReighter, David H.
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Primary Examiner(s)Poer, J.
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Application NumberUS05/595,179Time in Patent Office641 DaysField of Search106/97, 106/98, 106/99, 106/104, 264/86, 264/87US Class Current106/723CPC Class CodesC04B 40/0089 making use of vacuum or red...H01B 3/14 cements
