An Experimental Study on the Evaluation of Unit-Water Content According to Concrete Aggregate Variables though FDR Sensor

Abstract

The unit-water content that affects the workability, shrinkage cracking, and durability of concrete is an important factor. Methods for measuring the unit-water content include a high frequency heating method, a capacitance method, a unit volume mass method, and a simple method. However, these methods have the disadvantage of poor measurement method, time required, and precision. To solve this problem, a relatively simple and fast measurement method was adopted to compensate for the shortcomings through a Frequency Domain Reflection (FDR) sensor, and the unit-water content was used. In addition, the measurement data was analyzed by deep learning to evaluate the unit-water content of concrete.