| 摘要 |
<p>A grout and lifting assembly (8) including a grout and lifting tube (10) for casting within a concrete segment (CS). 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 (12) having an exterior with an anchoring rib structure (18, 20), a threaded interior (22), a proximal end (14), and a distal end (16). An annular gasket (38) 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 (28, 40) and/or by unitary co-molding. After the concrete section is placed and grout is pumped through the tube, a plug (42) 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.</p> |
