abstract
- © 2019 American Concrete Institute. All rights reserved.The potential use of the electrical resistivity (¿) and the saturated electrical resistivity (¿S) for the durability design of new concrete structures and the forecasting for in-service concrete structures has been increasing in the past three decades. Many investigations have proven the ease of the method and the possibility of it being a quality control/assurance tool during construction of new concrete infrastructure. Some previous investigations even consider the ¿S test a feasible one to remove other, more complicated and expensive tests used in cement-based materials as durability indicators; a few of them defined correlations between ¿S and the other indexes. The present investigation uses published data to determine if empirical correlations exist between ¿S and rapid chloride permeability (RCP), and between ¿S and the apparent chloride diffusion coefficient (DAP). A literature search was done on the three durability indexes in question (¿S, RCP, and DAP) and some empirical equations were derived. Good empirical correlations were observed for ¿S versus RCP and ¿S versus DAP. The latter correlation, obtained from data of different sources, supported that ¿S and chloride diffusivity follows the well-defined Einstein law of diffusion with minor modifications for cement-based materials.