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Deterioration of Concrete Bridge Decks Containing Epoxy-Coated and Uncoated Reinforcement

机译:含环氧树脂涂层和未涂层​​钢筋的混凝土桥甲板的恶化

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摘要

Bridge decks were constructed in Minnesota from 1973 to 1989 with mixed reinforcement, meaning a top mat of epoxy-coated reinforcement and a bottom mat of uncoated reinforcement, to reduce corrosion. This paper investigated how the deterioration of concrete decks built with mixed reinforcement compared to control structures containing all epoxy-coated reinforcement using rating data from inspection reports. The results were subdivided to indicate how the superstructure type, average daily traffic, route type, wearing surface crack density, and skew affected the condition ratings and deterioration. The mixed reinforcement decks reached worse condition states than the control structures considering the underside of the deck. Mixed reinforcement decks transitioned to the condition state where rehabilitation is often initiated after remaining in the prior condition state for 8.5 years. Bridges with a steel superstructure reached worse condition state ratings. Average daily traffic, route type, wearing surface crack density, and skew did not have consistent behavior considering deck ratings and deterioration. (C) 2021 American Society of Civil Engineers.
机译:桥甲板于1973年至1989年在明尼苏达州建造,含有混合加固,意思是环氧涂层加固和未涂层加固底部垫的顶部垫,以减少腐蚀。本文研究了与使用来自检验报告的评级数据的含有所有环氧涂层增强的控制结构相比,混凝土甲板的恶化。结果细分为表示如何进行上部结构,平均日常交通,路线型,佩戴表面裂纹密度和歪斜影响条件评级和劣化。与考虑甲板下侧的控制结构相比,混合加强甲板达到了差的状态状态。混合增强甲板转变为恢复在恢复后的状态状态,在留在先前条件状态下持续8.5岁。钢板上部结构的桥梁达到了更糟的状态态度。考虑甲板评分和恶化,平均每日交通,路线类型,磨损表面裂缝密度,偏斜的行为没有一致的行为。 (c)2021年美国土木工程师协会。

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  • 来源
    《Journal of bridge engineering》 |2021年第4期|06021001.1-06021001.4|共4页
  • 作者单位

    Meyer Borgman Johnson Duluth MN 55802 USA;

    Univ Minnesota Duluth Dept Civil Engn Duluth MN 55812 USA;

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