| 锈蚀与冻融循环下钢筋与混凝土粘结退化性能 |
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| 引用本文： | 何世钦,贡金鑫,金峰,孙晓燕.锈蚀与冻融循环下钢筋与混凝土粘结退化性能[J].水力发电学报,2009,28(2). |
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| 作者姓名： | 何世钦 贡金鑫 金峰 孙晓燕 |
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| 作者单位： | 何世钦,HE Shiqin(北方工业大学建筑工程学院,北京,100144;清华大学水利水电工程系,北京,100084);贡金鑫,GONG Jinxin(大连理工大学土木水利学院,大连,116023);金峰,JIN Feng(清华大学水利水电工程系,北京,100084);孙晓燕,SUN Xiaoyan(浙江大学建筑工程学院,杭州,310058)
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| 基金项目： | 国家自然科学基金重点项目，国家高技术研究发展计划(863计划) |
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| 摘 要： | 除冰盐不仅造成混凝土表面剥蚀,盐溶液渗入结构还引起严重的钢筋锈蚀,外部出现锈胀裂缝,从而造成钢筋与混凝土粘结性能退化.论文采用钢筋混凝土梁式粘结试件,在盐水中经过不同次数冻融循环后再对钢筋加速锈蚀,然后进行梁式粘结破坏试验,研究冻融循环与钢筋腐蚀共同作用下对钢筋与混凝土粘结-滑移等性能的影响.结果表明,冻融与锈蚀共同作用使钢筋与混凝土的粘结强度降低,粘结性能劣化.本文在试验研究的基础上给出冻融锈蚀后钢筋与混凝土的粘结强度和粘结退化模型,可为盐冻环境下的耐久性设计提供参考.
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| 关 键 词： | 土木建筑结构 本构模型 梁式粘结破坏试验 粘结性能 冻融循环 锈蚀 |
Deterioration characteristics of the bond between reinforcement and concrete subjected to freezing-thawing cycles and steel corrosion |
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| HE Shiqin,GONG Jinxin,JIN Feng,SUN Xiaoyan.Deterioration characteristics of the bond between reinforcement and concrete subjected to freezing-thawing cycles and steel corrosion[J].Journal of Hydroelectric Engineering,2009,28(2). |
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| Authors: | HE Shiqin GONG Jinxin JIN Feng SUN Xiaoyan |
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| Affiliation: | 1;2;1.College of Architecture;North China University of Technology;Beijing 100144;2.Department of Hydraulic Engineering;Tsinghua University;Beijing 100084;3.College of Civil Engineering and Water Conservancy;Dalian University of Technology;Dalian 116023;4.College of Civil Engineering and Architecture;Zhejiang University;Hangzhou 310058 |
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| Abstract: | The de-icing salt induced surface scaling of concrete and the salt solution could cause serious corrosion of reinforcement in reinforced concrete structures.As a result,the cracking along the reinforcement appears on the surface of concrete and the bond properties between concrete and reinforcement deteriorate.The bond experiments of reinforced concrete beams specimens which are subjected to freezing-thawing cycles and accelerating corrosion of reinforcing steel bar are carried out.The effects of freezing-t... |
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| Keywords: | civil structure constitutive model bond test of beam specimens bond properties freezing-thawing cycles corrosion |
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