盐沼泽环境下桥梁桩基混凝土耐腐蚀测试与防治研究  

Study on Corrosion Resistance Test and Prevention of Bridge Pile Foundation Concrete in Salt Marsh Environment

作　　者：殷艳萍 YIN-Yan-ping(Xi'an Railway Vocational&Technical Institute.,Xi’an 710021,China)

机构地区：[1]西安铁路职业技术学院,陕西西安710021

出　　处：《盐科学与化工》2023年第3期50-54,共5页Journal of Salt Science and Chemical Industry

摘　　要：以硫酸盐溶液(硫酸根浓度一致)与盐碱地下水为应用环境,对比分析普硅水泥与抗硫水泥之间的不同,同时还分析了基于这两种侵蚀溶液应用环境时掺入和不掺入抗硫酸盐防腐剂的差异。最终结果显示:在这两种侵蚀溶液环境中,抗硫水泥的抗侵蚀性能强于普硅水泥。前者在接触该侵蚀性地下水之处,相较于普硅水泥有着更高的抵御氯离子的侵蚀能力,但是随着时间的延长,最初的优势逐步减弱,直至抵御普硅水泥。掺入防腐剂之后,混凝土在地下水环境中与不掺入防腐剂基本一致,但是在单一硫酸盐溶液中,则要强于后者。在混凝土中掺入试验所提供的防腐剂,此时该混凝土在抵御氯离子侵蚀能力方面,弱于基准混凝土(50.0%掺合料)。Taking sulfate solution(sulfate concentration is the same) and saline-alkali groundwater as application environment, the differences between ordinary silicon cement and sulfur-resistant cement are compared and analyzed, at the same time, the difference between adding anti-sulfate preservative and not adding anti-sulfate preservative based on the two corrosion solutions was analyzed. The final results showed that the anti-corrosion performance of sulfur-resistant cement is better than that of ordinary silicon cement in the two kinds of corrosion solution. The former has a higher resistance to chloride ion than the ordinary silicon cement at the point of contact with the erosive groundwater, but as time goes on, the initial advantage is gradually weakened until the resistance to ordinary silicon cement. After adding the preservative, the concrete in the groundwater environment is basically the same as without the preservative, but in a single sulfate solution, it is stronger than the latter. When the anti-corrosion agent provided by this test is added into the concrete, the concrete is weaker than the reference concrete(50.0%) in the resistance to chloride ion erosion.

关 键 词：盐沼泽 桥梁桩基 混凝土 耐腐蚀 防治 

分 类 号：TU37[建筑科学—结构工程]