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THE STUDY ON THE DURABILITY OF EXTERNALLY PRESTRESSED CONCRETE STRUCTURE
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摘要: 分析了体外预应力钢筋的腐蚀机理和混凝土劣化原因，在此基础上评述现阶段采取的体外预应力筋的防腐、减振措施以及混凝土耐久性的改善措施。最后，结合体外预应力筋的电化学腐蚀原理，指出当前体外预应力混凝土结构在耐久性方面仍存在的问题，并提出提高其耐久性的建议。Abstract: The corrosion mechanism of externally prestressed tendons and damage mechanism of concrete are analysed. On this basis of analysis, the measures to prevent the erosion of externally prestressed tendons and to improve the durability of concrete are commented. Finally, on the basis of electrochemical corrosion mechanism, the limitations of the protection measures are studied and the suggestions to improve the durability of externally prestressed concrete structure are proposed.
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Key words:
- durability /
- externally prestressed tendon /
- corrosion mechanism /
- anticorrosion /
- vibration damping
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