期刊文献+

加速锈蚀与自然锈蚀钢筋混凝土梁受力性能比较分析 被引量:31

Comparative study on structural performance of reinforced concrete beams subjected to natural corrosion and accelerated corrosion
下载PDF
导出
摘要 对自然锈蚀与外加电流加速锈蚀2种条件下的锈蚀钢筋及锈蚀钢筋混凝土梁进行了对比试验研究.从钢筋锈蚀特征、锈后力学性能、锈胀形态、锈蚀梁受弯性能以及破坏形态等方面进行了比较分析,并从电化学机理对2种锈蚀方式做出了阐释.结果证明,外加电流加速锈蚀法可以较好地表现锈蚀引起的结构性能劣化趋势,但由于锈蚀机理的不同,它与自然锈蚀在各个方面存在显著差异,在同等质量锈蚀率下自然锈蚀钢筋混凝土梁的极限变形能力退化更为明显,加速锈蚀钢筋混凝土梁的刚度退化更为明显. Corroded steel bars and corroded reinforced concrete beams derived from natural environment and impressed current induced corrosion were tested. The corrosion characteristic, mechanical performance of rebar, expansive cracking of concrete cover, structural behavior and failure modes of corroded beams from these two corrosion patterns were compared. It is shown that accelerated corrosion using impressed current is an effective way to study the deterioration of structural performance caused by rebar corrosion. However, due to the difference in mechanism, obvious differences can be found in the test results from both corrosion processes. The degradation of ultimate deforming ability of R/C beams due to natural corrosion is more serious and the degradation of the stiffness of R/C beams due to accelerated corrosion is more serious under the same weight loss ratio of corroded rebars.
出处 《东南大学学报(自然科学版)》 EI CAS CSCD 北大核心 2006年第S2期139-144,共6页 Journal of Southeast University:Natural Science Edition
基金 国家自然科学基金资助项目(50508028).
关键词 自然锈蚀 外加电流 加速锈蚀 钢筋混凝土梁 耐久性 natural corrosion impressed current accelerated corrosion reinforced concrete beam durability
  • 引文网络
  • 相关文献

参考文献9

  • 1张伟平,商登峰,顾祥林.锈蚀钢筋应力-应变关系研究[J].同济大学学报(自然科学版),2006,34(5):586-592. 被引量:141
  • 2袁迎曙,章鑫森,姬永生.人工气候与恒电流通电法加速锈蚀钢筋混凝土梁的结构性能比较研究[J].土木工程学报,2006,39(3):42-46. 被引量:67
  • 3袁迎曙,贾福萍,蔡跃.锈蚀钢筋混凝土梁的结构性能退化模型[J].土木工程学报,2001,34(3):47-52. 被引量:178
  • 4Cabrera J G,Ghoddoussi P.The effect of reinforcement corrosion on the strength of the steel/concrete bond. International Conference, Bond in Concrete, from Research to Practice . 1992 被引量:1
  • 5Zhang Weiping,Dai Hongchao,Gu Xianglin, et al.Stochastic model of stress-strain relationship for corroded reinforcing steel bars. Proceedings of the Tenth East Asia-Pacific Conference on Structural Engineering & Construction . 2006 被引量:1
  • 6Du Y G,Clark L A,Chan A H C.Residual capacity of corroded reinforcing bars. Magazine of Concrete Research . 2005 被引量:1
  • 7Congqi Fang Karin Lundgren Mario Plos and Kent Gylltoft.Bond behaviour of corroded reinforcing steel bars in concrete. Cement and Concrete Composites . 2006 被引量:1
  • 8Lee Han-seung,Noguchi Takafumi,Tomosawa Fuminori.Evaluation of the bond properties between concrete and reinforcement as a function of the degree of reinforcement corrosion. Cement and Concrete Composites . 2002 被引量:1
  • 9Mangat PS,Elgarf MS.Flexural strength of concrete beams with corroding reinforcement. ACI Structural Journal . 1999 被引量:1

二级参考文献17

共引文献354

同被引文献215

引证文献31

二级引证文献151

;
使用帮助 返回顶部