Device for tensioning a reinforcing strand

Details Device for tensioning a reinforcing strand Device for tensioning a reinforcing strand

E - Fixed Constructions

04

G

72/124

E04G 21/12 (2006.01) E04C 5/12 (2006.01)

Patent

CA 1115979

ABSTRACT OF THE DISCLOSURE A device for tensioning reinforcing strands in concrete structures comprises a cylinder and a co-operating piston and is provided with an arrangement for supplying a pressure gas obtained by the combustion of gun-powder or some similar compound. The device may be arranged so that either the piston or the cylinder is movable, and by selecting the size and the composition of the powder charge it will be possible to use the device for an initial tensioning, usually performed in a number of steps, as well as for a final jerk. The device may be provided with an accumulator in which the combustion occurs, and with an arrangement for permit- ing, at will, the gas from the accumulator to act upon the piston.

324313

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