We investigate how fire, wind, chloride exposure, and corrosion change reinforced-concrete infrastructure over time. The work connects microstructure, transport processes, steel deterioration, and member-level response so that inspection and repair decisions can be made before damage becomes critical.
Wang, J. and Kim, Y.J. · Materials & Design, 225 (2023), 111528.View paper ↗
This study links the evolving hydration products and pore structure of ultra-high-performance concrete with chloride migration. A physicochemical simulation and random-walk model compare UHPC with ordinary concrete, clarifying why the denser UHPC microstructure slows chloride ingress and supports longer-lasting bridge applications.
Wang, J. and Kim, Y.J. · ACI Structural Journal, 121(1) (2024), 5–20.View paper ↗
Cellular automata are used to follow chloride transport, corrosion initiation, section loss, and capacity change in bridge columns exposed to atmospheric, splash, and submerged environments. The model then evaluates how CFRP confinement can restore load-carrying capacity and improve the response of deteriorated columns.
Wang, J. and Kim, Y.J. (2024). Steel-/Carbon Fiber-Reinforced Polymer-Prestressed Concrete Girders in Simulated Hydrocarbon Fire. ACI Structural Journal, 121(5), 3–18.
Wang, J. and Kim, Y.J. (2024). Cellular automata for corrosion in CFRP-strengthened bridge columns. ACI Structural Journal, 121(1), 5–20.
Kim, J.-H., Kim, Y.J., and Wang, J. (2023). Seismic-Fire-Combined Loadings Applied to CFRP-Confined RC Columns. ACI Structural Journal, 120(5).
Wang, J. and Kim, Y.J. (2023). Evolutionary characteristics of microstructural hydration and chloride diffusion in UHPC. Materials & Design, 225, 111528.