公开(公告)号：ES2034860T3

公开(公告)日：1993-04-01

申请号：ES90907125

申请日：1990-04-10

Applicant: SOLLAC

Inventor： GUERIN, GEORGES JOSEPH MICHEL ,  TEMENIDES, MICHEL

IPC: B21H7/00 ,  C12N15/09 ,  E01C11/18 ,  E04C5/03 ,  E04C5/04

Abstract: PCT No. PCT/FR90/00259 Sec. 371 Date Nov. 6, 1990 Sec. 102(e) Date Nov. 6, 1990 PCT Filed Apr. 10, 1990 PCT Pub. No. WO90/12175 PCT Pub. Date Oct. 18, 1990.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 cut 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.