A method of analysing a surface-treated layer (including coatings and impregnants) of a cementitious body by impedance spectroscopy. Also described is an apparatus for analysing a surface-treated layer (2) of a cementitious body (4) by impedance spectroscopy, the apparatus comprising: electrodes (6, 8) for applying an AC signal to said surface-treated layer (2) and cementitious body; and an analyzer for analysing response to said AC signal to determine variations in impedance of said surface-treated layer (2) with frequency.
申请公布号
WO9744659(A1)
申请公布日期
1997.11.27
申请号
WO1997GB01427
申请日期
1997.05.23
申请人
IMPERIAL COLLEGE OF SCIENCE, TECHNOLOGY AND MEDECI;ZHANG, JIANG-ZHONG;BUENFELD, NICHOLAS, ROBERT