Casting prestressed concrete without embedded reinforcement

Details Casting prestressed concrete without embedded reinforcement Casting prestressed concrete without embedded reinforcement

B - Operations, Transporting

28

B

25/38

B28B 21/30 (2006.01) B28B 3/00 (2006.01) B28B 3/08 (2006.01) B28B 7/46 (2006.01)

Patent

CA 1245038

ABSTRACT The disclosure describes a process for manufacturing a concrete structural element. The process comprises placing concrete in a casing, axially com- pressing the concrete in the casing while the concrete is setting at an axial pressure of at least MPa, and surrounding the casing during the compressing and setting with a hoop so as to create transverse planes of pressure. The device used includes a tubular casing which extends along an axis, and is adapted for pro- ducing a hoop around the tubular casing and for com- pressing the concrete along the axis of the casing during setting of the concrete.

456766

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