Tower having a pre-stressed concrete column and construction method

A method of building a tower, comprising:

• erecting a hollow column having a wall surrounding an inner space, with abutment portions provided at upper and lower parts of the column;
• pre-assembling pre-stressing cables comprising tendons and two cable terminations, each tendon being contained in a respective jacket with a protective substance, each cable termination comprising a block for anchoring each tendon of a pre-stressing cable, a chamber filled with a protective substance on a rear side of said block and a sealing system closing the chamber opposite the block, each tendon of said pre-stressing cable extending through the sealing system and having its jacket interrupted in said chamber;
• installing the pre-assembled pre-stressing cables in the inner space of the hollow column, the two terminations of each cable bearing against abutment portions at the upper and lower parts of the column;
• and
• tensioning the pre-stressing cables.