PSI - Issue 78

Israel Sousa et al. / Procedia Structural Integrity 78 (2026) 1815–1822

1822

4. Conclusion The addition of 0.5 wt.% CCMF to the lime-based mortar resulted in significantly lower electrical resistivity and greater sensitivity to damage, indicating the formation of a well-connected conductive network characteristic of an overpercolated system. The CNT-based mortar, despite a higher filler content (1.0 wt.%), exhibited high resistivity and limited variation in electrical response, suggesting inadequate dispersion and failure to reach the percolation threshold. The reference mortar showed similarly high resistivity and low sensitivity to damage. These results demonstrate that CCMF is more effective than CNTs in enhancing the electrical and self-sensing performance of these types of lime-based mortars. Further studies are necessary to enhance dispersion and consistency of limes with CNTs, and evaluate the long-term stability and durability under varying environmental conditions. 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