A system for monitoring performance-related properties of cement, comprising: a cement structure comprised of chemo-thermo-piezoresistive smart cement, wherein the chemo-thermo-piezoresistive smart cement comprises from about 0.03% to about 0.1% modified conductive or semi-conductive filler by weight of the chemo-thermo-piezoresistive smart cement, and wherein the modified conductive or semi-conductive filler comprises dispersed carbon fibers, dispersed basaltic fibers, or mixtures thereof; and an integrated real-time monitoring system for monitoring changes in electrical resistivity and electrical impedance of the chemo-thermo-piezoresistive smart cement, wherein the changes in the electrical resistivity and the electrical impedance of the chemo-thermo-piezoresistive smart cement correlate with performance-related properties of the chemo-thermo-piezoresistive smart cement, wherein the integrated real-time monitoring system is configured to collect AC resistance measurements at selected frequencies, characterised by the integrated real-time monitoring system being configured to use the AC resistance measurements to calculate the changes in the electrical resistivity and changes in electrical impedance of the chemo-thermo-piezoresistive smart cement using an equivalent circuit to represent electrical properties of the chemo-thermo-piezoresistive smart cement, wherein the chemo-thermo-piezoresistive smart cement is represented in the equivalent circuit as a bulk material with contacts as follows: Z 2 σ = R b σ + 2 R c σ 1 + ω 2 R c 2 C c 2 − j 2 ωR c 2 C c σ 1 + ω 2 R c 2 C c 2 wherein Z 2 is total electrical impedance for the equivalent circuit, R b is resistance of the bulk material, R c is resistance of the contacts, C c is capacitance of the contacts, and ω is a selected frequency, and wherein the equivalent circuit assumes a negligible capacitance for the bulk material. a cement structure comprised of chemo-thermo-piezoresistive smart cement, wherein the chemo-thermo-piezoresistive smart cement comprises from about 0.03% to about 0.1% modified conductive or semi-conductive filler by weight of the chemo-thermo-piezoresistive smart cement, and wherein the modified conductive or semi-conductive filler comprises dispersed carbon fibers, dispersed basaltic fibers, or mixtures thereof; and an integrated real-time monitoring system for monitoring changes in electrical resistivity and electrical impedance of the chemo-thermo-piezoresistive smart cement, wherein the changes in the electrical resistivity and the electrical impedance of the chemo-thermo-piezoresistive smart cement correlate with performance-related properties of the chemo-thermo-piezoresistive smart cement, wherein the integrated real-time monitoring system is configured to collect AC resistance measurements at selected frequencies, characterised by the integrated real-time monitoring system being configured to use the AC resistance measurements to calculate the changes in the electrical resistivity and changes in electrical impedance of the chemo-thermo-piezoresistive smart cement using an equivalent circuit to represent electrical properties of the chemo-thermo-piezoresistive smart cement, wherein the chemo-thermo-piezoresistive smart cement is represented in the equivalent circuit as a bulk material with contacts as follows: Z 2 σ = R b σ + 2 R c σ 1 + ω 2 R c 2 C c 2 − j 2 ωR c 2 C c σ 1 + ω 2 R c 2 C c 2 wherein Z 2 is total electrical impedance for the equivalent circuit, R b is resistance of the bulk material, R c is resistance of the contacts, C c is capacitance of the contacts, and ω is a selected frequency, and wherein the equivalent circuit assumes a negligible capacitance for the bulk material. <EOS>