<p indent=0mm>Electrically conductive roller-compacted concrete (ERCC) is a novel functional material, which can solve the problems of low efficiency of artificial snow removal and deicing on expressway and airport runway and the difficulty in temperature control of dam engineering structures. In this study, we designed ERCC and conducted an experimental study and numerical simulations on the designed ERCC. The improvement mechanism of surfactants on the fluidity of ERCC slurry and the effects of carbon-black dispersion were analyzed by scanning electron microscopy. Aiming at the large ERCC core-sampling specimen formed by rolling, macroscopic tests for mechanical properties and mesoscopic tests by X-ray computed tomography (XCT) were conducted. Based on the experiment, precise simulation of ERCC was performed by coupling the calculation methods of continuous and discontinuous mediums. We developed a mesoscopic model of ERCC based on real aggregate. The model overcomes the challenges of high cost of XCT models, low efficiency of discontinuous-medium calculation methods, and poor refinement of traditional sphere/polyhedral aggregate models in traditional continuous-medium calculation methods for concrete. The result shows that surfactants can significantly improve the effect of carbon-black dispersion on ERCC, and the forming quality of rolling construction technology is positive with compressive strength of <sc>22.85 MPa,</sc> splitting strength of <sc>1.72 MPa,</sc> elastic modulus of <sc>23.7 GPa,</sc> and pore volume ratio of 1.05‰. The mortar and interface strengths of ERCC were constant, whereas with an increase in the volume ratio of aggregates, the mechanical properties of ERCC could be improved. The precise simulation results are consistent with the statistical laws of concrete material characteristics in many practical projects, and they have better applicability than traditional meso-simulations of concrete.