| 赵羽习,金伟良.混凝土构件锈蚀胀裂时的钢筋锈蚀率[J].水利学报,2004,35(11):0097-0101 |
| 混凝土构件锈蚀胀裂时的钢筋锈蚀率 |
| Corrosion ratio of reinforcement bar in reinforced concrete construction at the moment of cracking due to corrosion expansion |
| 投稿时间：2003-07-09 |
| DOI： |
| 中文关键词: 钢筋锈蚀 胀裂力 锈蚀率 耐久性 |
| 英文关键词: reinforcement bar corrosion expansion corrosion ratio |
| 基金项目:浙江省科技计划(2003C23024) |
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| 摘要点击次数: 2865 |
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| 中文摘要: |
| 本文建立了由于钢筋锈蚀导致的混凝土保护层胀裂时的钢筋混凝土构件的力学模型，应用弹性力学理论得到了混凝土保护层胀裂时的钢筋锈蚀率的解析表达式，并讨论了与混凝土保护层胀裂时的钢筋锈蚀率相关的各个影响因素，得到以下结论：随着混凝土保护层厚度和混凝土等级的增加，混凝土胀裂时的钢筋锈蚀率会增大；混凝土内钢筋直径的减小，也会导致混凝土胀裂时钢筋锈蚀率的增加；不同的钢筋锈蚀产物，有着不同的铁锈膨胀率，随着铁锈膨胀率的减小，混凝土保护层胀裂时的钢筋锈蚀率增大；而铁锈的名义弹性模量和名义泊松比对混凝土保护层胀裂时的钢筋锈蚀率影响很小。 |
| 英文摘要: |
| The mechanical model of the cover layer cracking in reinforced concrete structure due to corrosion expansion of reinforcement is established. The theory of elasticity is applied to deduce the analytical solution expressing the corrosion ratio of the reinforcement at the moment of cracking. The factors affecting the corrosion ratio are analyzed. It is found that the corrosion ratio at the moment of cracking increases with the increase of the cover thickness and concrete strength, and increases with the decrease of reinforcement bar diameter. The property of rust has little effect on the corrosion ratio. |
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