Development of Technology for Measuring Water Retention and Permeability of Concrete Using Quartz Complex Capacitance Sensor

Abstract

In this research, we developed a complex capacitance sensor with a crystal oscillator circuit for measuring the water retention and permeability of concrete. Differences in water-tightness due to aggregate size, curing method, and admixture were successfully measured. This technology is expected to be applied to on-site watertightness evaluation of concrete, contributing to the diagnosis of durability and deterioration of concrete and extending its service life through appropriately timed maintenance.