Adhesion enhancement and protection of concrete against aggressive environment using graphite-Fe2O3 modified epoxy coating

This study aimed to improve the performance of epoxy resin coatings for protecting concrete structures from chemical corrosion and surface abrasion. The research involved incorporating Fe2O3 nanoparticles into a carbonaceous matrix in a two-part epoxy resin coating. Concrete slabs with the modified coating underwent accelerated ageing under harsh conditions. It was found that the nanomodified coatings showed a significant improvement in performance compared to unmodified coatings. The effect of the amount of composite added to the epoxy system was analyzed. Results show that adding 3 wt% of the synthesized Fe2O3 nanoparticles into a graphite carbonaceous matrix offered the most promising adhesion values. Moreover, adding 3 wt% of the composite into epoxy resin fulfilled a compromise between adhesion improvement and limiting solubility. Finally, it was found a reduction in the number of nanoparticles emitted after ageing. Overall, the incorporation of Fe2O3 nanoparticles into epoxy resin coatings shows potential for improving their performance and durability.

Automated summary

This study aims to enhance the performance of epoxy resin coatings for protecting concrete structures against chemical corrosion and surface abrasion. Fe2O3 nanoparticles were incorporated into a carbonaceous matrix in a two-part epoxy resin coating. Modified coatings exhibited significantly improved performance compared to unmodified ones after undergoing accelerated ageing under harsh conditions. The amount of composite added to the epoxy system was analyzed, indicating that adding 3 wt% of synthesized Fe2O3 nanoparticles into a graphite carbonaceous matrix offered the most promising adhesion values. Additionally, a compromise between adhesion improvement and limiting solubility was achieved by adding 3 wt% of the composite into epoxy resin. A decrease in the emitted number of nanoparticles after ageing was observed. Overall, the incorporation of Fe2O3 nanoparticles into epoxy resin coatings displays potential in enhancing their performance and durability.