Rural revitalization strategies, along with the Three-Year Action Plan for the Protection of Corridor Bridges (2023-2025), are important tasks in China. Currently, it is crucial to conduct a detailed investigation and clarify the relevant processes to lay a theoretical and scientific foundation for targeted interventions.In this study, a simulated aging test was conducted on the wall using a saturated salt solution of sodium sulfate and potassium nitrate as the medium. The aim was to investigate the salt disease in the failure mechanism of the wall structure and the strength of the An-fu Bridge, and to explore the impact of different salt solutions on the An-fu bridge. Additionally, the analysis of efflorescence in the An-fu bridge was included. Overall, during the experiment, changes in its apparent characteristics, microstructure, quality, and strength were tested. The results indicated that all experimental samples exhibited weathering and damage. Both sodium sulfate and potassium nitrate caused damage to the internal structure of the masonry. The uniaxial compressive strength of the masonry increased initially and then decreased with the number of cycles. The erosive effect of sodium sulfate on the masonry was significantly stronger than that of potassium nitrate. The findings also suggest that, from the perspective of protecting and maintaining the corridor bridge, it suggested specific protective measures such as line layer maintenance to promote the cultural inheritance and protection of the corridor bridge is not only about enhancing the tourism value and landscape quality of the corridor bridge but also about fostering the economic development and social progress of the area where the corridor bridge is located.
Liu et al. (Sat,) studied this question.