A Study on the Variability of Electrical Resistivity of Concrete

摘要

The article presents results stemming from two French collaborative research projects (SENSO and APPLET). Electrical resistivity measurements are studied either as a tool of control of on-site structure, or as an indicator of durability. The results concern the evaluation of resistivity measurements variability at various scales. They enable to make the part between the real material information and spurious variations of various origins. We distinguish the repeatability, the reproducibility, the local variations, then, the variations on one batch, between batches and between concretes. The results show that the measurement technique is adapted to needs, and that the various variabilities remain smaller than the variations of properties looked for.