华北自然环境条件下表面防护对碳纤维片材耐久性能的影响

杨萌; 杨勇新; 赵颜; 廉杰; 王小锋

doi:10.13204/j.gyjz200802005

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华北自然环境条件下表面防护对碳纤维片材耐久性能的影响

doi: 10.13204/j.gyjz200802005

1.
中冶集团建筑研究总院,北京 100088

基金项目:

攻关计划(国际合作)项目(2005DFBA0002)资助

详细信息

作者简介:
杨萌,男,1979年2月出生,博士.E-mail：dr.yangm.Eng@gmail.Com

计量
- 文章访问数: 40
- HTML全文浏览量: 5
- PDF下载量: 31
- 被引次数: 0
出版历程
- 收稿日期: 2007-10-10
- 刊出日期: 2008-02-20

STUDY ON THE INFLUENCE OF PROTECTION ON CFRP SHEETS DURALBILITY UNDER THE ENVIRONMENT OF NORTH CHINA

1.
Central Research Institute of Building and Construction,MCC Group,Beijing 100088

摘要

摘要: 碳纤维片材加固混凝土结构广泛应用于土木工程,关于其耐久性能的研究已得到了工程界的重视。通过对目前土木工程加固常用的碳纤维片材在华北地区自然环境条件下的耐久性能进行了试验研究,其中,对部分试件进行了遮挡防护,以期考察防护与否对碳纤维片材抗拉强度、伸长率和弹性模量等的影响。试验每组试件设为5件,目前试验时间截至2年,已进行了7组共35个试件的试验。经分析发现,无防护碳纤维片材拉伸性能比有防护碳纤维片材下降快。
- 碳纤维片材 /
- 耐久性 /
- 自然环境
Abstract: The concrete structures strengthened by CFRP sheets are widely used in civil projects and much attentions is paid to their durability. Studies and tests were done on durability of common CFRP sheets in nature environment of north China. In order to investigate the influence of protection on strength, extensibility and Young?? s modulus of CFRP sheets, some sheets were protected. Each group includes five CFRP sheets and seven groups of sheets were tested up to now. Test results indicate that strength ability of sheets without protection declines badly then the one protected.
- CFRP sheets /
- durability /
- nature environment

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参考文献(8)

杨勇新, 王敬, 张小冬. 碳纤维布加固混凝土结构耐久性能初步研究. 港工技术, 2002(2) : 25-27

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[5] Baumert M E, Green M F, Erki M A. A Review of Low Temperature Response of Reinforced Concrete Beams St rengthened with FRP Sheets.Advanced Composit e Materials in Bridges and Structures 2nd International Conf erence.Quebec: Canadian Society for Civil Engineering, 1996: 565-572

[6] CECS 146: 2003 碳纤维片材加固混凝土结构技术规程

[7] Steckel G L, Hawkins G F, Bauer J L. Environmental Durabil ity of Composit es for Seismic Ret rofit of Bridge Columns. Proceedings of NIST Workshop on Standards development for the Use of Fiber Reinforced Polymers for the Rehabilitation of Concrete and Masonry St ructures.Tucson, Arizona: 1998(1-8) : 83-96

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