Study of the Behavior of Self-Sensing Concrete under the Influence of Different Mechanical Loads: A Review

Abstract

Self-sensing concrete is an intelligent application of scientific knowledge for practical purposes and new concrete structures, which can feel the damage, stress and strain in the body of concrete. It has been widely used because of its possibility of getting efficient cost solution for controlling the structural sustainability of concrete structures, which indicate, that it is very impressive during the design life of the facilities. This review contains universal behavior and global information about different conditions of loading for self-sensing concrete. Also, the definitions and applications of intrinsic and non-intrinsic self-sensing concretes are mentioned. Moreover, a major confirmation is stated on the application of scientific knowledge for practical purposes and new concrete structures. The characteristics of self-sensing concrete provide an ability to reveal small cracks before they begin to become significant. During unchanging compression, firstly, the values of electrical resistivity decrease through an increase in load, subsequently become stable and then increased suddenly. While, during impact loading, the electrical resistivity decreases suddenly, but it regresses then to 0 after loading. However under tensile stress, the electrical resistivity increases as the tensile stress increases. Nevertheless, since the flexural is a component of compression and tension, the comparison between sensitivity for compression part is much smaller than in tension part.