MICRO-SCALE DESCRIPTION OF THE SATURATED CONCRETE REPAIRED BY ELECTROCHEMICAL DEPOSITION METHOD BASED ON SELF-CONSISTENT METHOD

Since there are few theoretical models to describe the healing process of electrochemical deposition method at the micro-scale level, a three-phase micromechanical model, which is made up of the deposition products, water and intrinsic concrete, for the healed saturated concrete is presented based on the material's microstructure and the healing mechanism. To quantitatively describe the influence of the deposition products on the macro-scale properties of the concrete, multi-level homogenization scheme is presented to obtain the effective properties of the saturated concrete repaired by electrochemical deposition method based on the self-consistent method. Specifically, the properties of the equivalent inclusion are calculated by the general self-consistent model in the first level homogenization. In the second level homogenization, the self-consistent method combined with the Voigt upper bound is utilized to obtain the properties of the repaired concrete. To verify the correctness of micromechanical framework, the predicting results are compared with the experimental data and those from the existing models, which show that the proposed model and homogenization methods are reasonable and acceptable.