Published February 15, 2021 | Version 1
Journal article Open

Performance of concretes manufactured with newly developed low-clinker cements exposed to water and chlorides: Characterization

Creators

  • 1. Department of Industrial Engineering and Mathematical Science (DIISM), Università Politecnica delle Marche, 60131, Ancona, Italy
  • 2. Department of Materials, Environmental Sciences and Urban Planning (SIMAU), Università Politecnica delle Marche – INSTM Research Unit, 60131, Ancona, Italy
  • 3. Department of Materials, Environmental Sciences and Urban Planning (SIMAU), Università Politecnica delle Marche – INSTM Research Unit, 60131, Ancona, Italy; Institute of Atmospheric Sciences and Climate, National Research Council (ISAC-CNR), Via Gobetti 101, 40129 Bologna, Italy
  • 4. Global R&D, HeidelbergCement AG, Oberklamweg 2-4, 69181, Leimen, Germany

Description

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

Files

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

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Additional details

Funding

EnDurCrete – New Environmental friendly and Durable conCrete, integrating industrial by-products and hybrid systems, for civil, industrial and offshore applications – EnDurCrete 760639
European Commission