Research on the durability of high-performance concrete in bridge engineering
高性能混凝土在桥梁工程中的耐久性研究

摘要

高性能混凝土（HPC）在桥梁工程中的应用显著提升了结构的强度与耐久性，但其性能受材料配比、施工工艺及环境条件的影响。本研究通过实验分析与案例研究，揭示了优化水胶比、选用合适掺合料和改进施工工艺可有效增强HPC的耐久性。针对不同环境条件提出的防护策略，如抗氯离子侵蚀和冻融循环保护措施，进一步保障了桥梁的长期稳定性。科学合理的设计与施工是提高HPC耐久性的关键，为未来桥梁工程提供了重要的理论依据和技术支持。

Abstract

The application of high-performance concrete (HPC) in bridge engineering has significantly enhanced the strength and durability of the structure. However, its performance is influenced by factors such as material proportioning, construction technology, and environmental conditions. Through experimental analysis and case studies, this research reveals that optimizing the water-binder ratio, selecting appropriate admixtures, and improving the construction technology can effectively enhance the durability of HPC. Protection strategies proposed for different environmental conditions, such as measures against chloride ion erosion and protection against freeze-thaw cycles, further ensure the long-term stability of the bridge. Scientific and reasonable design and construction are the keys to improving the durability of HPC, providing important theoretical basis and technical support for future bridge engineering projects.