Figure 9.

Distribution of the tensile and compressive strain obtained by carrying out four-point bending tests on the reinforced concrete beam specimen embedding smart cement-based sensors (where ${ϵ}_{\mathrm{c},\inf }$ and ${ϵ}_{\mathrm{c},\sup }$ are the tensile and compressive strain within a considered section of the beam, respectively): (a) Load case A, applied load P${}_1$ = 2 kN; (b) load case A, applied load P${}_2$ = 3 kN.