The purpose of the test is to determine the position of the reinforcement, the thickness of the rod cover and provide an accurate approximation of the diameter of the rods by sliding a magnetic field emitting probe connected to a digital and acoustic processing unit along the surface.
This type of detection is particularly useful for the execution of other tests such as core drilling and pull-out, which need to avoid the reinforcement.
The purpose of the test is to draw samples from reinforcing rods on which chemical, physical or mechanical tests are to be carried out in a material testing laboratory. This method involves the use of a chisel to remove the iron cover and a shear to cut the iron. It must be carried out in areas of low stress indicated by the Customer and must be conducted in such a way as to create as little disturbance as possible to the structure and its constituent elements.
Measurement of corrosion potential
Potential mapping is an electrochemical method used to assess the corrosion status of the reinforcement. The technique involves measuring the potential of the reinforcement by means of a reference electrode (Cu/CuSO4) resting on the surface of the concrete with a damp sponge to ensure electrolytic contact. This characteristic allows the extent and intensity of the corrosive phenomenon on the reinforcing bars caused by the decrease of the alkalinity of the concrete due to carbonation phenomena or attacks by aggressive substances to be defined.
Measurement of the tensional state using Strain-Gauges (strain gages)
The purpose of the test is to measure the tensional state of the metal structural elements by mounting a pair of diametrically opposed sensors in such a way as to be able to detect the combined tensional state of axial stress and bending moment.
Strain gage surveys aimed at measuring the deformation state during the passage of trains on the Bologna-Padua line.