This protocol describes the procedure to express fresh pore solution from cementitious systems and the measurement of its ionic composition using X-ray fluorescence. The ionic composition can be used to calculate pore solution electrical resistivity, which can be used, together with concrete electrical resistivity, to determine the formation factor.
Tsui Chang, M., Montanari, L., Suraneni, P., Weiss, W. J. Expression of Cementitious Pore Solution and the Analysis of Its Chemical Composition and Resistivity Using X-ray Fluorescence. J. Vis. Exp. (139), e58432, doi:10.3791/58432 (2018).