Tremie tube

Details Tremie tube Tremie tube

E - Fixed Constructions

02

D

61/58

E02D 27/52 (2006.01) E02D 15/06 (2006.01) E02D 27/04 (2006.01)

Patent

CA 1039523

Abstract of the Disclosure A tremie tube or a concrete feeding tube for use in feeding fresh concrete under the water consists of an outer tube having desired rigidity and a wall having a number of through-holes, and an inner tube having desired softness. The lower end of the inner tube is adapted to be closed with a closure means. This tremie tube is so designed as to be sunk under water, with the lower end of the inner tube being closed with the closure means, so that water is introduced through the aforesaid through-holes inwardly of the wall of the outer tube so as to collapse the inner tube under water pressure, with the resulting decrease in buoyancy of the tremie tube. When the tip of the outer tube reaches the bottom of the water, then fresh hardening-material or concrete is fed into the inner tube under pressure so as to inflate the inner tube, with the result that the closure means is opened due to the pressure of concrete being fed, thus allowing the concrete to be placed on the bottom of water.

252813

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