Grout and lifting tube

F - Mech Eng,Light,Heat,Weapons – 16 – B

Patent

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Details

F16B 13/02 (2006.01) B66C 1/66 (2006.01) E04B 1/35 (2006.01) F16J 15/06 (2006.01) F16L 55/11 (2006.01)

Patent

CA 2645985

A grout and lifting tube for casting within a concrete segment. The tube provides enhanced sealing between the tube and the concrete to prevent moisture leakage into a structure formed by a plurality of the concrete segments. The tube includes a generally cylindrical body having an exterior with an anchoring rib structure, a threaded interior, a proximal end, a distal end. An annular gasket is disposed at the proximal end of the tube body, and may be secured to the proximal end of the tube body by a mechanical interlock and/or by unitary co-molding. After the concrete section is placed and grout is pumped through the tube, a plug is threadable into the proximal end of the tube to both compress the gasket between the plug and the tube at a first seal, and to compress the gasket between the plug and the concrete surrounding the proximal end of the tube at a second seal to provide robust, watertight sealing.

Coulis et tube de levage pour un coulage dans une section de béton armé. Le tube assure une étanchéité améliorée entre le tube et le béton afin d'empêcher toute pénétration d'humidité dans une structure formée d'une série de sections de béton. Le tube comprend un corps généralement cylindrique muni d'un extérieur comportant une structure nervurée d'ancrage, un intérieur fileté, une extrémité proximale et une extrémité distale. Un joint d'étanchéité annulaire est placé sur l'extrémité proximale du corps du tube, et peut être fixée à ladite extrémité du tube par un enclenchement mécanique et/ou par un co-moulage unitaire. Lorsque la section de béton est placée et que le coulis est pompé à travers le tube, un bouchon fileté est placé dans l'extrémité proximale du tube, tant pour compresser le joint d'étanchéité entre le bouchon et le tube à une première obturation, que pour comprimer le joint d'étanchéité entre le bouchon et le béton entourant l'extrémité proximale du tube, au niveau d'une seconde obturation afin d'obtenir un scellé robuste et étanche à l'eau.

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