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本文分析了影响预应力混凝土管耐久性的各种因素,提出了在不同使用条件下应采取的相应技术措施。笔者对预应力混凝土管耐久性的涵义提出了看法、强调了使用条件的重要性。认为:保护层质量及厚度不足是引起钢丝腐蚀(即影响管道耐久性)的主要因素;同时对应力腐蚀也应给以足够的重视。
This paper analyzes various factors that affect the durability of prestressed concrete pipes, and puts forward corresponding technical measures that should be taken under different conditions of use. The author puts forward the views on the meaning of the durability of prestressed concrete pipes and emphasizes the importance of the conditions of use. It is believed that the lack of quality and thickness of the protective layer is the main factor that causes corrosion of the steel wire (ie affects the durability of the pipe); at the same time, sufficient attention must be given to stress corrosion.