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海水侵蚀环境下混凝土力学性能劣化试验

, PP. 35-38

Keywords: 道路工程,力学性能劣化,加速腐蚀试验,混凝土,人工海水

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Abstract:

以人工海水为侵蚀介质,采用加速腐蚀试验,对设计强度等级为C35的混凝土试件进行了0、10、20、30、40、50、60次干湿循环试验,检测了海水侵蚀作用对混凝土抗压强度、抗拉强度、弹性模量及应力-应变关系的影响。试验结果表明,混凝土随着干湿循环次数的增多,其表观质量和力学性能均呈现出不同程度的下降趋势。建立了混凝土随侵蚀循环次数变化的抗压强度折减模型、抗拉强度折减模型和弹性模量的折减模型,为进一步开展混凝土结构在侵蚀离子作用下的力学性能劣化机理与计算模型的研究提供了依据。

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