Bibliography

Mr. Zhong Wenke graduated from Xinjiang University in 2008. From 2008 to 2010, he served as Deputy Director of the Joint Laboratory of the Department of Chemistry at Shenzhen University and Shenzhen Feiyang Group, and was one of the founders of Feiyang polyaspartic polyurea. From 2010 to 2026, he focused on research into polyaspartic ester materials. He currently serves as Rotating Secretary-General of the Shenzhen Materials Federation and Director of the Shenzhen Bao’an Research Institute of Dalian University of Technology. His primary research direction is application innovation of polyaspartic ester materials in the coatings field. He has led the development of patents for this material across multiple application domains and has directed the technical team in developing formulations that bond with concrete in the building materials sector, achieving long-term anti-corrosion protection for concrete structures.

Protection of concrete structures with polyaspartic material to extend the service life

Reinforced concrete structures undergo continuous durability deterioration caused by water ingress, chloride attack, carbonation, freeze-thaw cycles and UV radiation, which weaken structural integrity and shorten service life. Conventional protective coatings have notable limitations. Epoxy is rigid, susceptible to cracking under substrate movement and prone to UV yellowing. Polyurethane may provide insufficient long-term impermeability and unstable interfacial adhesion, resulting in seepage and delamination. Polyurea cures extremely quickly, requiring specialized spraying equipment, while aromatic polyurea is also vulnerable to UV discoloration.

This study evaluates the protective performance and multi-scenario applicability of polyaspartic coatings for reinforced concrete. Their sterically hindered molecular structure enables controllable curing and manual application while providing excellent UV resistance, non-yellowing performance, impermeability, crack-bridging flexibility and stable substrate adhesion. The dense cross-linked coating effectively prevents the penetration of water and corrosive substances.

Polyaspartic coatings provide reliable protection for roofs and exterior facades of new buildings, helping delay deterioration and extend service life. They also offer effective resistance to acid, alkaline and microbial corrosion in harsh environments such as sewage systems. The study demonstrates that polyaspartic coatings are versatile, high-performance materials capable of mitigating concrete deterioration and improving the long-term durability of reinforced concrete structures.