Concrete structure reinforcement and fabrication process...

Details Concrete structure reinforcement and fabrication process... Concrete structure reinforcement and fabrication process...

E - Fixed Constructions

04

C

25/113, 26/184,

E04C 5/03 (2006.01) B21H 7/00 (2006.01) E01C 11/18 (2006.01)

Patent

CA 2029905

According to a process for the manufacture of a framework (1) for reinforcing concrete structures and, in particular, concrete slab or shell structures in the form of a steel strip (3) with notched or goffered surfaces, a hot laminated sheet is used as a basis material having a width of between 1.5 and 6 mm, whereby said sheet is made of steel with a carbon content of less than 0.9 %, and elastic limit of approximately 500 MPa. Said sheet is subjected to a cold lamination process at a strength-hardening level greater than 40 % in order to obtain a sheet having, on the one hand, a thickness of between 0.8 and 2.5 mm, and on the other hand, an elastic limit greater than 700 MPa, whereby the sheet is split again so as to obtain a steel strip (3) which is then continuously notched or goffered. The application also concerns the framework obtained according to the process.

2029905 9012175 PCTABS00102 Dans le procédé de fabrication d'une armature (1) pour le renforcement des structures en béton et notamment de dalle ou voile en béton se présentant sous la forme d'un feuillard (3) dont les faces sont crantées ou gaufrées, on utilise pour matériau de base une tôle laminée à chaud d'épaisseur comprise entre 1,5 et 6 mm, en acier possédant une teneur en carbone inférieure à 0,9 %, et une limite élastique d'environ 500 MPa, on soumet à un laminage à froid sous un taux d'écrouissage supérieur à 40 % pour obtenir une tôle ayant d'une part une épaisseur comprise entre 0,8 et 2,5 mm, et d'autre part une limite élastique supérieure à 700 MPa, la tôle étant refendue pour obtenir un feuillard (3) qui est ensuite cranté ou gaufré en continu. La demande concerne également l'armature obtenue selon ce procédé.

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