E - Fixed Constructions – 04 – C
Patent
E - Fixed Constructions
04
C
72/117
E04C 5/00 (2006.01) D07B 1/16 (2006.01) E04C 5/08 (2006.01)
Patent
CA 1243501
ABSTRACT OF THE DISCLOSURE Steel materials for use with concrete that is prestressed by posttensioning are disclosed. In accordance with one embodiment of the invention, a steel member is sheathed with a heat-shrinkable synthetic resin tube. A heat-fusible synthetic resin adhesive may be coated or placed on the inner surface of the heat shrinkable synthetic resin tube or on the outer surface of the steel member such that when heat is applied to cause the resin tube to shrink, the resin adhesive melts to provide firm adhesion between the steel member and the resin tube. In another embodiment, the steel member is sheathed with a foamed synthetic resin tube. Both embodiments are further applicable to the case of a stranded steel member, in which case it is preferred that the spiral grooves of the stranded member be filled with a resin before coating with an adhesive or sheathing with an external tube.
470178
Inoo Eiji
Mizoe Mikio
Watanabe Kanji
Riches Mckenzie & Herbert Llp
Sumitomo Electric Industries Ltd.
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