Study of the dielectric gradient values of reinforced concrete sample by considering radar measurements in an inverse problem

The goal of this study is to develop a tool that will evaluate the moisture content gradient in the depth of reinforced concretes in the context of building safety. The monitoring of ageing phenomena, such as the corrosion of steel reinforcements, depends on the amount of water and on its gradient as they are directly related to the dielectric values of the concrete. In this paper, to obtain these values, we propose to solve an inverse problem for reinforced concrete. First, an experimental device based on radar measurements is proposed with its 3D numerical model. Next, we describe an inverse process to determine a dielectric profile according to the depth and validate it on measured data obtained for control samples.

Automated summary

The goal of this study is to develop a tool to evaluate the moisture content gradient in the depth of reinforced concretes in the context of building safety. By proposing an experimental device based on radar measurements and a 3D numerical model, the study presents a method for solving the inverse problem of determining the dielectric profile of concrete, which is validated on measured data obtained for control samples.