钢筋混凝土桥梁防腐蚀技术措施研究

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基金项目:

上海市建委重点项目(2000-01-06)

THE STUDY ON CORROSION RESISTANCE TECHNOLOGY OF REINFORCED CONCRETE BRIDGE

摘要: 对上海地区五座被腐蚀的桥梁混凝土的现场取样测试结果显示，原设计强度为C30混凝土强度和耐久性均严重降低。近年来上海建成了大量桥梁、高架和轨道交通工程，钢筋混凝土防腐技术措施研究无疑将成为一个紧迫的课题。通过对涂有(纯丙乳液、苯丙乳液、叔碳酸盐和有机硅)涂层的混凝土的氯离子渗透性、气体渗透性以及碳化性能进行了研究，发现除有机硅外，其他几种涂层对混凝土防腐效果显著，其中苯丙乳液效果最佳。
- 混凝土 /
- 防腐蚀 /
- 涂层 /
- 耐久性
Abstract: The results for the concrete samples from five corroded concrete bridges in Shanghai show lower strength and worse durability during the past decade, a large numbles of bridges, viaducts and city railways were built in Shanghai.The technology and measures of concrete corrosion resistance should be researched in time.The chloride permeability, gas permeability and carbonation resistance of concrete coating by different coats(TC, PA, CA, OS) were studied.The results show that the coats are efficient to protect concrete from corroding except for OS, and PA is the best.
- concrete /
- corrosion resistance /
- coat /
- durability