Figure 7.

Analytical models considered for defining the post-embedding calibration algorithm for smart cement-based sensors embedded in reinforced concrete (RC) beams: (a) Bending moment diagram for a simply supported beam subjected to two concentrated loads, F (where M${}_{max}$ is the maximum value of the bending moment and M${}_x$ is the bending moment acting on a section of the beam specimen instrumented with a smart cement-based sensor); (b) stress and strain diagrams for the uncracked concrete stage theory in a generic RC section (x is the neutral axis, H is the height of the section, E indicates the concrete cover, D is defined as the difference between H and E).