Title:
【発明の名称】予圧処理コンクリート体及びその製造方法
Document Type and Number:
Japanese Patent JPH02504011
Kind Code:
A
Abstract:
Methods for forming prestressed concrete members wherein a pressure-containing casing is disposed around the outside surface of the concrete member and is spaced therefrom so that a cavity is formed between the casing and the outside surface of the concrete member. A pressurized medium is injected into the cavity between the casing and concrete member at a pressure sufficient to apply the required prestressed compressive force to the outside surface of the concrete member. The pressurized medium changes form by hardening or solidifying after injection. Examples of solid pressurized mediums include cement-like grouts and plastic, and epoxy resin materials. When the concrete member is cast within the casing so as to be in intimate contact with the casing the cavity is then formed by peeling the concrete member and casing away from each other as the pressurized medium is injected therebetween.
Inventors:
Richard Lewis, Creedon
Application Number:
JP50375888A
Publication Date:
November 22, 1990
Filing Date:
April 07, 1988
Export Citation:
Assignee:
GENERAL ATOMICS
International Classes:
E04C3/293; B28B21/56; B28B21/62; B28B23/12; B29C45/14; E04C3/30; (IPC1-7): B28B21/56; B29C45/14; E04C3/293; E04C3/30
Attorney, Agent or Firm:
Kyozo Yuasa (4 outside)