SYSTEM FOR MEASURING THE ELECTRICAL RESISTIVITY OF CONCRETE, AT DIFFERENT DEPTHS, IN NEW AND EXISTING STRUCTURES

A System for measuring the electrical resistivity of concrete in already existing constructions comprising a first probe and a second probe placed in two separate holes of a construction; said first and second probes comprise: a tubular element (10); a first electrode (11) and a second electrode (12), placed at the same height so as to form a pair of electrodes (11, 12) electrically isolated from one another by means of the interposition of an insulating material (14); a plurality of said pair of electrodes (11, 12) are placed on said tubular element (10) at different heights.