Real-Time Measurement of Mortar Properties with Electrical Resistivity during Curing

Abstract

This work used electrical resistivity over the first 72 h of hydration to measure the impact of air, sealed, and wet curing on mortar samples at different depths. The resistivity measurements provide new insights that are not easily obtained with other techniques and provide direct insights into the moisture change. The resistivity correlates with the porosity, degree of saturation (DOS), and a novel splitting test. This work also provides important insights into how curing impacts the porosity, DOS, and strength of mortar samples at different depths. This work is the basis for future real-time sensing techniques with resistivity.