Analysing a surface treated layer of a cementitious body

摘要

Apparatus for analysing a surface-treated layer 2 of a cementitious body 4 by impedance spectroscopy comprises electrodes 6,8 for applying an alternating signal to the layer and body and an analyser for analysing response to the signal to determine variations in the impedance of the layer with frequency. The apparatus may be used for the in situ testing of reinforced concrete structures (figures 5,6).