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该文开展了人工海水环境下GFRP(玻璃纤维增强塑料)筋(玻璃纤维增强塑料筋)持续浸泡及干湿循环腐蚀试验,探讨研究了两种腐蚀方式对GFRP筋受压力学性能的劣化机理。研究结果表明:试件抗压强度随浸泡时间和干湿循环次数的增长基本呈线性下降;干湿交替循环腐蚀作用对GFRP筋受压性能的影响大于单纯氯盐溶液浸泡腐蚀;与碱溶液浸泡腐蚀数据对比可知,相同腐蚀条件下,碱溶液环境对GFRP筋抗压性能的劣化较氯盐溶液更为严重。
This paper carried out the continuous soaking of GFRP (glass fiber reinforced plastic) tendons and the wet-dry cyclic corrosion test under artificial seawater environment, and studied the degradation mechanisms of the two kinds of corrosion modes on the mechanical properties of GFRP tendons. The results show that the compressive strength of the specimens decreases linearly with the soaking time and the number of wet-dry cycles. The effect of cyclic wetting and drying cycles on the compressive properties of GFRP tendon is greater than that of pure chloride solution. Comparisons of corrosion data indicate that under the same corrosion conditions, the degradation of GFRP tendons in alkali solution environment is more serious than chloride salt solution.