Study on Chloride Permeability and Chloride Ion Transport of Fiber-Reinforced Cementitious Composite Repair System

Buildings, Год журнала: 2025, Номер 15(6), С. 975 - 975

Опубликована: Март 19, 2025

The durability degradation of concrete structures in marine and urban underground environments is largely governed by chloride-induced corrosion. This process becomes significantly more severe under the coupled action external loading drying–wetting cycles, which accelerate chloride transport structural deterioration. However, existing research often isolates effects mechanical or environmental exposure, failing to comprehensively capture synergistic interaction between these factors. lack understanding ingress simultaneous limits development reliable service life prediction models for structures. In this study, a self-made system was employed simulate environment, combining with 108 days cycles. Chloride profiles were obtained assess combined stress level, water/binder ratio, fiber content on penetration fiber-reinforced cementitious composites (FRCCs). To further extend analysis, Crank–Nicolson-based finite difference approach developed numerical assessment diffusion after repair. model enables point-wise treatment nonlinear concentration provides space- time-dependent distributions. results show that using an FRCC as repair material enhances chloride-contaminated remaining repaired extended 36.82% compared unrepaired case, demonstrating clear practical value repairs aggressive environments.

Язык: Английский

Experimental investigation on the mechanical properties of waterborne epoxy resin modified high-performance recycled aggregate concrete

Materials Letters, Год журнала: 2025, Номер unknown, С. 138744 - 138744

Опубликована: Май 1, 2025

Язык: Английский