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硫酸盐溶液干湿循环对FRP加固混凝土梁抗剪性能的劣化作用

Keywords: 纤维增强复合材料,钢筋混凝土梁,抗剪性能,硫酸盐腐蚀,干湿循环

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Abstract:

为了研究和分析CFRP加固混凝土梁在沿海恶劣条件下的耐久性问题,进行了人工模拟硫酸钠溶液干湿循环试验,重点研究了硫酸盐溶液干湿循环因素对CFRP加固混凝土梁抗剪性能的劣化影响.研究结果表明:硫酸盐溶液干湿循环对加固梁极限荷载有明显影响,极限承载力有明显下降,对FRP的有效应变也有较大影响,但没有改变应变的分布规律.

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