Performance of concretes manufactured with newly developed low-clinker cements exposed to water and chlorides: Characterization by means of electrical impedance measurements

This paper discusses the electrical impedance behaviour, measured according to Wenner’s method, of three different concrete mixes during accelerated degradation tests. Being a first attempt move from laboratory in-field applications targeted long-term monitoring, same electrode array configuration and set-up (AC current at 10 kHz) is used. Results show that decreases down 24% in capillary water absorption tests, 77% 86% salt-spray chamber wet/dry cycles with 3.5% NaCl solution, respectively. The two new low-clinker cements adopted seem improve measurement sensitivity towards contaminants ingress respect commercial one (reference).